"roof finish underlays and insulation"

The design philosophy for this project was to create a highly-efficient and architecturally-stunning world class winery for Yealands Estate. Inspired by the landscape, the curved roof mirrors the shape of the nearby rolling hills, and the overall building is reminiscent of traditional family run countryside wineries.The building features a highly insulated envelope and is considered one of the most environmentally friendly wineries ever built.

Products from Kingspan Insulation’s Kooltherm and Therma ranges have helped to transform a derelict water tower in North Yorkshire into a striking family home, as featured on Channel 4‘s Restoration Man. By using insulation that delivers outstanding thermal performance from minimal thicknesses, the owners have been able to create a home that is not only sensitive to the building’s industrial past, but that functions as a cosy yet spacious family home.

The proprietors of this domestic property in Harrogate added a large extension with a total roof area of 150m2. The client wanted the new roof sections to complement the slate work and aesthetics of the original building whilst adding a contemporary and stylish look to the extension.Originally considering a zinc sheeted roofing system, the client explored alternative materials that could achieve the same visual impact but at lower cost. After discussions with Cure Roofing Ltd, a Polyroof simulated metal finish was proposed as a roofing solution that would meet all the client’s requirements.Not only do Polyroof’s range of liquids offer cost savings over traditional metals, but they are also lighter in weight, totally seamless and can be pigmented to any RAL colour. Having no scrap value, the client also had the added peace of mind that the roof would not be a target for theft.A timber warm roof was constructed which incorporated 120mm PIR insulation to achieve a U-Value of 0.18 W/m2K in compliance with building regulations. An OSB3 TG4 deck was fitted above the insulation and Polyroof pre-formed GRP standing seam trims were fixed at 600mm centres into the deck. Next, the first coat of the Protec waterproofing system was applied over the whole roof area and encapsulating the standing seam trims. The roof was finished with a second coat of Protec pigmented to RAL 7016 providing an anthracite grey colour to the whole roof, accurately simulating the appearance of zinc roof sheets.The workmanship by Polyroof approved contractor Cure Roofing was second to none and the quality of the finish left the client delighted with their new roof. With BBA approval, top-rated fire performance and Polyroof’s trusted 20 Year Accredited System Guarantee, the client has total peace of mind that their new extension could not be better protected for decades to come.

A 1950’s office building has been transformed into a luxury apartment complex with a major refurbishment featuring insulated plasterboard and soffit insulation.

Completed in 2016, The Woodsman’s Treehouse is a unique property set high up in the branches of a 200-year-old oak tree in Dorset. The fantastic property is six metres tall and sits 30 feet up in the trees.The Woodsman’s Treehouse needed high performing insulation for the walls in order to keep its guests warm year-round. Due to the already compact area he was building the treehouse in, Guy didn’t want to compromise on space when it came to the thickness of the walls. He needed space saving insulation that still maintained the performance levels of traditional insulation, in order to make sure the heat produced from the wood burner didn’t escape from the building.SuperFOIL provided the project with our SF60 multifoil insulation, which is the world’s highest performing multifoil. The insulation is just 100mm thick, so was the perfect solution to ensure space wasn’t compromised, whilst still offering high thermal performance. The insulation has a 3-in-1 design which consists of three layers- insulation, vapour control and radiant barrier. What this meant was that the treehouse would be protected from condensation whilst still maintaining the right temperature, whatever the season. Offering excellent value for money, SF60 is ideal for both new build or retrofit projects and is certified by BBA and LABC, ensuring it meets the needs of building regulations. The insulation is also made from 40% recycled materials and is fully recyclable at the end of its 50+ year lifespan, so contributed to the sustainability of the project.

The three-storey structure designed by FaulknerBrowns, includes library and exhibition space, IT suite, 3D printers, and café. The development, completed in October 2016, is part of a £100 million regeneration masterplan which partners South Tyneside Council with Muse Developments. Creating a curved structure can pose a challenge, but the Kingspan TEK Cladding Panel was successfully engineered to provide a smooth, highly insulated exterior envelope. To achieve this, the structural insulated panels (SIPs) were designed and factory cut into narrow widths. This allowed them to be quickly and easily fixed to the concrete frame.

ROJECT NAME: RENOVATION PRODUCT SUPPLIED SUPPLIED: INSTALLER SELFBUILD CONTRACT FLOORS AEROMIX was chosen for this renovation project thanks to its many benefits of offering warmth, smoothness of finish and speed of install. This project came with a challenging access issue meaning a long pump distance and lots of services in the floor AEROMIX was the perfect solution. This was the perfect product, providing an ideal solution for the insulation for this project. Reducing CO2 due to reduced carbon emissions within the product. The installer who completed this project SELFBUILD CONTRACT FLOORS said AEROMIX was poured as insulated ground baring slab, installed at 250mm deep achieving the required 0.11 u-value, this allowed the customer to clip the UFH pipes directly to it before being topped with a 65mm C20 liquid screed AEROMIX provided the ideal solution for the insulation on this project, compared to the normal concrete floor and other traditional methods, the speed of pumping the insulation coupled with the high thermal properties has contributed in saving the customer both time and money. 

The University of Salford’s new Science, Engineering and Environmental (SEE) building features a white RainScreen façade, punctuated by contrasting red window reveals with a sloping sill to form recessed windows. While this creates an impactful design statement, it proved challenging when it came to evaluating the RainScreen insulation performance.The thermal performance challengeFrom the outset the designers, in conjunction with the University, outlined a desire for non-combustible insulation. But the feature red reveal details meant there were restricted cavity widths near the windows, which would affect the depth of insulation that could be installed. Several Mineral Wool insulation manufacturers had been unwilling to undertake U-value calculations. This was because it was challenging to understand the weighted U-value across the different façade build-ups and determine the U-value uplift required to compensate for the shallower window reveal areas.Architects Sheppard Robson had previously worked with Knauf Insulation and engaged its Project Specification Team to discuss the challenge and develop calculations.After receiving the plans, Knauf Insulation undertook 3D U-value calculations and confirmed that they could meet the required thermal performance – and crucially it would mean no changes to the design or impact on the cavity widths.Accurate 3D U-value calculationsSo how could Knauf Insulation meet the brief when other manufacturers could not?The crucial factor was the type of U-value calculation used. Most manufacturers use the standard method, which calculates the U-value for the build-up without the metal substructure. Because this method doesn’t consider the effect of the metal penetration through the insulation, a blanket correction factor is added, which can lead to the under- or over-specification of insulation. Either way, it means that the insulation used in the finished project may not deliver the thermal performance that has been specified. And in the case of the SEE building, calculating the weighted U-value to prevent this was critical.Knauf Insulation uses numerical modelling (also known as 3D U-value calculations) as standard for all RainScreen façade projects. This methodology thermally models the build-up taking into account the complex interaction between the insulation and the bars and brackets of the steel framing system (SFS). As a result, it creates the most accurate available picture of how the build-up will perform thermally after construction.For the SEE building, the team undertook several different calculations changing elements of the build-up, including the substructure material and insulation widths, until they determined the optimal combination.High performance insulationBy using this rigorous calculation method, Knauf Insulation was able to meet the brief with a combination of 50mm and 160mm Rocksilk® RainScreen Slab, along with 200mm OmniFit® Slab 35.Rocksilk® RainScreen Slab is a Rock Mineral Wool slab that is BBA certified for use at any height and for the broadest range of thicknesses and build-ups on the market. It has a thermal conductivity of 0.034 W/mK.OmniFit® Slab 35, a Glass Mineral Wool slab with a thermal conductivity of 0.035 W/mK, is ideal for use in the SFS.Both Rocksilk® RainScreen Slab and OmniFit® Slab 35 are non-combustible with the best possible Euroclass A1 reaction to fire classification so they will not contribute to the development or spread of fire should it occur. Thanks to their sound absorption characteristics, critical for low mass rainscreen structures, they will help create a quieter environment for the computer and science labs.A sustainable solutionThere was one other specification factor to consider – sustainability. The SEE building had been designed to minimise its environmental impact in line with the University of Salford’s campus master plan.Matthew Taylor, the project architect from Sheppard Robson, noted: “From early on, sustainability has been high on the SEE building agenda, including becoming one of the first all-electric University educational building.” The building will also be supported by photovoltaic panels on the roof.But while the use of renewable energy sources and high performance insulation will help lower the building’s operational carbon, it was important to keep embodied carbon to a minimum.Here Glass Mineral Wool scores highly too because it has the lowest embodied carbon of any mainstream insulation material.Knauf Insulation has proactively reduced the embodied carbon in its products over the years, as part of a broader set of activities to reduce its environmental impact. Specific actions to minimise its carbon footprint include initiatives to reduce road miles in both sourcing and distribution.For example, its Glass Mineral Wool products are manufactured using up to 80% recycled content, including glass collected from the local communities around its factories. The finished products are then compressed by up to 10:1 to fit more product into each lorry reducing transport related carbon emissions.Another innovation is ECOSE® Technology, its unique bio-based binder contains no added formaldehyde or phenol. It is made from natural raw materials that are rapidly renewable and is 70% less energy-intensive to manufacture than traditional binders, so it is more environmentally friendly.Products made with ECOSE® Technology are also soft to touch and easy to handle. They generate low levels of dust and VOCs and have been awarded the Eurofins Gold Certificate for Indoor Air Comfort.Ongoing supportThe through-wall build-up was installed by Metclad Contracts. As this was the first time they had worked with Rocksilk® RainScreen Slab, they also turned to the Specification Team for installation advice. They wanted to know whether the insulation should be fixed into the sheathing boards or the SFS.Knauf Insulation provided details of the fixing pattern together with the installation guide. They also facilitated meetings with their fixing partner to provide specialist technical support about pull out values and requirements for fixing into the substrate.Thanks to Knauf Insulation’s extensive technical expertise and ongoing support, the vision for the University of Salford’s state-of-the-art SEE building has become a reality – without any compromise on thermal performance, fire safety, acoustic or sustainability.

Luxury coastal apartments able to withstand the elements with Sika roofing system. Owing to its beautiful coastal location, The Liner, a nautical-inspired £35 m residential new-build in Falmouth, presented a compelling roofing challenge. Exeter-based roofing contractor, Progressive Systems, assisted by Sika, took on the task, installing a roof to withstand the harsh seaside conditions with an immaculate finish.Green roof composed of:Sika® Sarnafil® G410 18EL PVC Single Ply Waterproofing Membrane.Sarnavap® 5000E SA Vapour Control Layer.Sarnafil® Primer 610.Sarnatherm® ‘G’ insulation.Sikalastic® 625.Sarnafil® G445-13 PVC Protection Sheet.Sika® Green Roof System.

When the government instructed people to work from home during the Covid-19 pandemic, the gym where Wirral-based personal trainer Megan Hewitt worked closed down. So, Megan and partner Dan decided to build a fitness studio in their garden to allow her to conduct video personal training sessions during lockdown. To ensure the 6m x 3m timber frame building would be suitable for use all year round, it was essential to insulate the roof and walls.The couple researched various types of insulation online and narrowed it down to Mineral Wool because of its thermal performance and fire safety. They had three other considerations: it had to be good at blocking noise, have excellent sustainability credentials, and be easy to install, as they planned to fit it themselves.Just one product for all applicationsTheir research showed that Knauf Insulation 50mm and 70mm OmniFit Slab ticked all the boxes. It is a multi-application slab, meaning the couple didn’t need to purchase separate products for the roof and walls. What’s more, it offers a higher level of thermal performance than alternative versatile slabs on the market.It is manufactured from Glass Mineral Wool and is non-combustible with a Euroclass A1 Reaction to Fire Classification, meaning it will not add to the development or spread of a fire should it occur.Keeping quietAs any exercise fanatic knows, a good workout needs a strong soundtrack and Megan wanted to motivate clients without becoming a noisy neighbour. OmniFit Slab provides excellent levels of acoustic performance thanks to its open fibre structure that absorbs sound waves.Insulation that doesn’t cost the earthSustainability was another important factor for the couple. Like all of Knauf Insulation’s Glass Mineral Wool insulation, it is manufactured from up to 80% recycled content, mostly used glass bottles and jars that would otherwise go to landfill.It is also manufactured with ECOSE® Technology, Knauf Insulation’s unique bio-based binder, which contains no added formaldehyde or phenol. ECOSE® Technology is made from natural raw materials that are rapidly renewable and is 70% less energy-intensive to manufacture than traditional binders, so it is more environmentally-friendly.Products made with ECOSE® Technology are soft to touch and easy to handle. They generate low levels of dust and VOCs (volatile organic compounds) and have been awarded the Eurofins Indoor Air Comfort Gold Standard.Its softness was a benefit that Megan noticed during installation. She said: “I remember helping my Dad with our ‘old-school’ Mineral Wool loft insulation when I was younger and it was horrible, it irritated my skin for 24 hours after. But the OmniFit was fine – there was no irritation whatsoever.”Installation was no sweatA tight fit between joints is essential to eliminate gaps that can reduce thermal and acoustic performance, but with some types of insulation it can be difficult to achieve the high quality installation required. OmniFit Slab is manufactured to provide friction fitting to ensure all joints are sealed correctly. Despite having no previous experience, Megan, Dan and a friend fitted the 40m2 OmniFit Slab themselves over the course of a day.“Before fitting the insulation, we watched an installation video on YouTube,” said Megan. “We followed the techniques shown and it was really easy to install. We had no problems at all.”“I’m delighted with the finished result. When the fitness studio was finished, we kept turning up the stereo to see whether the insulation really was soundproof – even at full blast, you couldn’t hear the music outside. It’s amazing.”“Before we put the insulation in, I was exercising in winter gear with the radiator on full – now the studio is lovely and warm. I’m back in vests and I haven’t had to put the heating on at all.”Thanks to Knauf Insulation OmniFit Slab, Megan and her clients can enjoy a high energy workout in a warm, safe environment – without disturbing her neighbours. What’s more, the insulation is sustainable and will ensure the studio’s energy consumption and carbon emissions are low over its lifetime. Note: Megan, Dan and her friend maintained social distancing guidelines during the insulation install. Megan continues to follow government guidelines for the operation of gyms and exercise facilities, conducting her sessions online when in-person training is not possible.

This case study focuses on the successful implementation of Britmet's Structural Conversion System, BritFrame, and composite slate tile, Liteslate, installed by ART Contracts LTD in a residential flat roof renovation project near Llangollen. The existing roof had been plagued by ponding and water ingress, necessitating repeated repairs and replacements over 20 years. This case study explores the benefits, challenges, and outcomes of utilizing the Britframe and Liteslate, providing a long-lasting and aesthetically pleasing solution. Residential flat roofs are susceptible to issues such as ponding water, water ingress and yearly inspections, which can lead to recurrent maintenance and repair requirements. This case study showcases the utilisation of Britmet Lightweight Roofing's Britframe Structural Conversion System and Liteslate to overcome these challenges and deliver a durable, low-maintenance roofing solution. Britframe is a versatile and innovative solution designed to convert flat roofs into pitched roofs, providing improved water runoff and a new more aesthetically pleasing finish, and reduced risk of ponding water and improved thermal performance. This can be covered using a variety of different roofing materials, and Liteslate, a lightweight synthetic slate roofing slate, was specified due to its excellent weather resistance, durability, and aesthetically appealing finish. Llangollen is part of the UNESCO World Heritage Site along eleven miles of canal from Gledrid to the Horseshoe Falls and required a durable yet authentic roofing solution.The project involved the renovation of a residential flat roof that had undergone multiple repairs and replacements over 20 years due to ponding and water ingress, and constant maintenance. ART Contracts LTD was tasked with implementing and installing LiteSlate to resolve recurring issues.The Britframe System converted the existing flat roof into a pitched roof, enabling efficient water runoff and preventing ponding, thereby eliminating the risk of water ingress, and reducing the need for yearly inspections and constant maintenance to site, Britmet’s Liteslate offered excellent weather resistance and durability, reducing the need for frequent repairs and replacements while offering an attractive finish replicating the appearance of natural slate. Overall offering the advantages of lightweight construction and ease of installation.Conducting a thorough structural assessment of the existing flat roof to ensure compatibility and feasibility of the Britframe required careful analysis and engineering expertise. Coordinating the installation of the Britframe and Liteslate with existing roof features, such as skylights or ventilation systems, posed challenges in achieving a seamless integration.The implementation of Britframe has effectively addressed the issue of ponding, providing efficient water runoff and preventing water ingress into the residential property. The utilisation of Liteslate offered exceptional durability, weather resistance, and longevity, significantly reducing the need for future repairs and replacements, and thereby providing long-term cost savings. Liteslate also improved the overall aesthetic appeal of the residential property, replicating the natural beauty of slate roofing while offering the advantages of lightweight construction. The integration of the Britmet Lightweight Britframe System and Liteslate successfully addressed the challenges the building was facing. The project resulted in improved water runoff, enhanced durability, a more aesthetically pleasing roofing solution, along with a new 60+ year life expectancy. This case study emphasizes the importance of selecting innovative and reliable roofing systems to overcome recurring roofing issues and deliver long-lasting and visually appealing outcomes.

The existing waterproofing had failed due to a previous poor installation, the result of which saturated the insulation below the exterior roofing. New high performance solutions were specified that included a range of IKO roofing waterproofing systems to protect both the flat and pitched roofing areas of the building. IKOslate, a robust and durable tile was specified for the pitched roof due to vandalism and the fragility of the current system, whereas a tapered scheme was required for the flat roofing - IKO Ultra Prevent alongside a cold applied liquid solution (IKO Polimar) for the more intricate details.

CHALLENGEAn ambitious project, and one of the first certified PassivHaus homes in the UK - the Denby Dale PassivHaus in West Yorkshire, had to to use 90% less energy for space heating than the average UK dwelling – with a space heating need of only 15 kWh/m2/ year. The three-bedroom property is the first UK Passivhaus to be built in a traditional style using cavity wall construction and had to be built to a tight budget of £141,000.SOLUTION“We decided to go down the cavity wall path and arrived at the design for several reasons including: planning restrictions, thermal store, cost, and maybe most important of all, buildability,” explains Bill Butcher, Project Leader.Excellent performing insulation is obviously fundamental to Passivhaus construction and the Denby Dale house has 300mm Knauf Insulation DriTherm® Cavity Slab 32 in the walls, 500mm Knauf Insulation Loft Roll 44 in the roof void (both of which incorporate ECOSE® Technology) along with 225mm of high-performing Polyfoam® Floorboard Standard* insulation in the floor.“We’re fully filling the cavity with glass mineral wool insulation for the walls above ground, because it helps minimise air movement in the cavity and offers greater flexibility, fitting snugly around the ties, openings and imperfections of the masonry surface.” comments Bill Butcher.Economics, performance, availability, ease of fitting and reducing thermal bypass were all among the benefits of the Knauf Insulation products chosen.*No longer sold through Knauf Insulation.BENEFITSGlass Mineral Wool was specified over rigid insulation to ensure a tight thermal fit. Knauf Insulation DriTherm® Cavity Slabs are flexible enough to eliminate air gaps and prevent heat loss due to their inherent ability to knit together at joints between the slabs. If rigid insulation is used and fitted badly with too many gaps, air movement around and between the insulation boards is increased, which can drastically reduce its insulation value.Knauf Insulation DriTherm® Cavity Slabs are BBA Certified for all exposure zones and formally guaranteed for 50 years to prevent the transmission of liquid water from the outer masonry leaf to the inner masonry leaf.In addition to its thermal performance glass mineral wool also has other sustainable features. In manufacture it uses a high content of recycled glass bottles and requires less overall energy consumption than some alternative products, resulting in less carbon emissions. In addition, it can be recycled at the end of a building’s life and has zero GWP and zero ODP. ECOSE® Technology further extends these established green credentials as it is manufactured with 70% less energy than traditional binders and the products contain no dyes or added formaldehyde – providing the ideal solution to the eco-friendly house.

Factory International will transform the former Granada Studios into a world-class cultural and arts venue in the heart of Manchester. It features The Hall, a large auditorium, and The Warehouse, a flexible multi-purpose space that is taller than four double-decker buses, longer than a jumbo jet and can accommodate 5,000 visitors.Alongside the two public events spaces are The Towers, which house the ground floor entrance foyer, five floors of office space and a plant room at the top of the building. Noise reduces productivity by 66% so when it came to specifying the soffit insulation for The Towers, the architect wanted a solution that would limit airborne sound transfer and reverberation.The insulation would be on display, so aesthetics was also important, and because Factory International will cater for large crowds of people, the chosen solution needed to be non-combustible.Meeting the briefThe architects specified Knauf Insulation’s 50mm Heraklith® Tektalan A2 SmartTec for the soffit insulation in the ground floor foyer of the Warehouse area, main feature staircase, offices and plant room of The Towers.Heraklith® Tektalan A2 SmartTec is a cement-bonded wood wool panel combined with a rock mineral wool insulation core. Both materials have an open structure that naturally absorbs the kinetic energy of sound waves, turning them into heat. It is also non-combustible with an Euroclass A2-s1,d0 reaction to fire classification.Crucially, the Heraklith® wood wool range is also designed for applications where aesthetics is important because the panel is on display. It features bevelled edges and comes in nature tone as standard, or can be ordered in any RAL colour upon request, to create a stylish, uniform finish.To compliment the design schemes in the different zones across the building, contractors, Mansell Building Solutions, ordered the panels in a combination of midnight blue, pebble grey, anthracite and black.Scheduling deliveriesAs the Factory International site is quite compact, there was little room available for storage. So, Knauf Insulation worked closely with distributor Encon Insulation to ensure the insulation was held in stock. Smaller deliveries were then made in line with Mansell Building Solutions’s schedule of works. This ensured that the insulation could be installed as soon as it arrived on site.The product is quick and easy to install. Panels are fixed into position by installing Heraklith® DDS Plus Concrete Screws into each corner and the centre of the panel. The fastener heads have a patented wood wool texture to enhance the finished appearance.Ultimately, installing Heraklith® Tektalan A2 SmartTec onto the soffits in The Towers and the ground floor foyer of the Warehouse not only compliments the design scheme and contributes to fire safety, but it will enable the team behind the events at Factory International to enjoy a quieter working environment too. 

Central M40, a 70 acre industrial estate situated off J11 of the M40 in Banbury, comprises six warehouses totalling over 1 million sq ft of accommodation – equivalent to roughly 17 football pitches. The estate was developed speculatively by db Symmetry*, who specified CA Group’s robust Twin-Therm® Built-up Roof and Wall systems.A key component of the Twin-Therm® building envelope system is Therma-Quilt, a bespoke high-performance Glass Mineral Wool insulation. It is manufactured by Knauf Insulation specifically for CA Group and is the result of a long standing partnership between the two companies.Therma-Quilt is ideally suited for non-residential cladding applications. It offers outstanding performance and functionality available in different thicknesses to support the Twin-Therm® system, delivering enhanced thermal U-values as low as 0.09W/m2K. It is non-combustible with a Euroclass A1 Reaction to Fire Classification, meaning it will not contribute to the development or the spread of a fire.Therma-Quilt is also a high-performing acoustic insulation. In Twin-Therm® roof applications, it helps reduce the drumming effect of rainwater, while in Twin-Therm® wall applications, it aids with sound reduction and can minimise the reverberation of internal sound when used in conjunction with perforated metal liner sheets. Therma-Quilt has been developed with water resistance in mind and uses materials that help prevent water ingress.The Twin-Therm® system has been designed with sustainability in mind and Therma-Quilt is no exception. Knauf Insulation’s Glass Mineral Wool products contain up to 80% recycled materials. This saves on virgin raw materials and energy demands, cuts carbon emissions, and reduces waste going to landfill.It is manufactured with ECOSE® Technology, Knauf Insulation's unique bio-based binder that contains no added formaldehyde or phenol. It is made from natural raw materials that are rapidly renewable and is 70% less energy-intensive to manufacture than traditional binder, so it is more environmentally-friendly.Products made with ECOSE® Technology are soft to touch and easy to handle. They generate low levels of dust and VOCs and have been awarded the Eurofins Gold Certificate for Indoor Air Comfort.In total, more than 70 tonnes of Therma-Quilt insulation were used on the six megasheds on the Central M40 development. While the industrial estate was built speculatively, its strategic location has previously attracted premium occupiers including Hellofresh, Prodrive Motorsport, TVS Supply Chain Solutions and Rinkit.Thanks to the Twin-Therm® system with its Therma-Quilt insulation, the warehouses have achieved BREEAM ‘Very Good’ ratings, while the businesses using them will enjoy more comfortable, warmer and safer working environments – and lower energy costs. *db Symmetry has rebranded as Tritax Symmetry

Middlewood Locks is a prestigious 25-acre mixed-use regeneration scheme of Salford’s canal district. The first development phase included the construction of Quarry, an eight-storey building combining ground floor commercial space, luxury apartments and an undercroft car park for residents. It was the insulation for this car park that threw up a challenge for sub-contractor Horbury Building Systems. A complex underdrawing method had been specified, comprising the installation of timber battens, non-combustible mineral wool insulation and a separate soffit insulation over the top. Installation would be extremely labour-intensive, so Horbury Building Systems consulted Knauf Insulation about whether it could provide an alternative that would meet the thermal performance and fire safety requirements, but also be easy to install. Knauf Insulation’s Technical Support Team reviewed the specification and recommended 185mm Rocksilk® Soffit Linerboard Extra to achieve the required 0.18 W/m2K U-value.  Rocksilk® Soffit Linerboard Extra is a Rock Mineral Wool insulation slab bonded to a 6mm off-white weather resistant facing board which provides a two-in-one aesthetic and thermal solution. It has a low thermal conductivity of just 0.034 W/mK and is designed for use as an insulated underlining solution in semi-exposed environments. The off-white cementitious particle board reflects light which makes it ideally suited for use in car parks. As well as thermal performance, Rocksilk® Soffit Linerboard Extra is non-combustible. It has the best possible Euroclass A1 reaction to fire classification, so it will not contribute to the development or spread of a fire should it occur. This is important because car parks can contain large quantities of a potential propellant – petrol. So the insulation will help to ensure the fire safety of the rest of the building.   Rocksilk® Soffit Linerboard Extra also has good sound absorption characteristics so it provides high levels of sound reduction. This reduces noise from the car park, minimising disruption for the people living and working in the premises above. As well as meeting the specification, Rocksilk® Soffit Linerboard Extra has been enhanced to add rigidity and is easy to install. The board is simply placed onto the concrete soffit and fixed into position with five drillscrews. This reduced the installation method from three separate phases to just one, saving Horbury Building Systems time and associated labour costs. Stephen Hampshire, Contracts Manager at Horbury Building Systems said: “We found the panels easy to install. Firstly, we marked and drilled the fixing points at bench level. Next, we held the panels in place to the underside of the concrete – although the panels are lightweight ‘this is a two-handed operation’ – then we drilled through and fixed.”  “We took care in lining the panels together when installing it against the soffit and with some minor tweaking up and down we got a nice flush finish.” Being able to align the panels exactly is not only important for ensuring a good finish. It also means that the slabs will butt tightly together, reducing unintended air gaps which can reduce thermal, fire safety and acoustic performance.  The insulation was supplied to the Middlewood Locks construction site by distributor Galaxy Insulation.  Thanks to Knauf Insulation’s Rocksilk® Soffit Linerboard Extra, the underlining of the car park at Middlewood Locks was easy to install, is aesthetically pleasing, and provides complete thermal, fire safety and acoustic performance.

THE PROJECTRecticel’s Eurothane® GP and Eurowall® Cavity provided the quality PIR solution for two city-based social housing developments. Melody Gardens and Corporation Road in Salford, Manchester were built on behalf of Places for People and For Housing. Watson Homes carried out the work on both developments. For Melody Gardens, it involved the building of a four-storey block compromising 48 apartments; nine two-storey houses, and a bungalow. The properties were built on a 0.4-hectare site once occupied by a Catholic church.THE SOLUTIONEurothane® GP, a low-thermal conductivity panel, provided Melody Gardens’ groundfloor insulation. In conjunction with Eurowall® Cavity, it was also installed at Corporation Road which comprises 18 one-bed and 15 two-bed apartments. The products’ durable thermal performance ensured both developments become a valued addition to Salford’s social housing portfolio.Mike Watson, Construction Director at Watson Homes explained:"Recticel’s high-quality products were essential to ensuring the fabric of both developments was fitted with insulation that will fulfil the occupants’ long-term domestic needs. In terms of installation, the panels’ easy-fit properties made quicker and lighter work of a potentially challenging project."Used products:Eurothane GP: Eurothane® GP is a high performance PIR insulation board that is light weight, easy to cut, handle and install. Whether it’s a pitched roof, framed wall or floor, Eurothane® GP is the ideal solution amongst contractors and installersEurowall® Cavity:Eurowall® Cavity is a specialist high performance solution for cavity walls, with precision-cut straight edges to ensure gaps between boards are kept to a minimum. It has a low emissivity facing which delivers improved thermal resistance within the clear cavity.  

BackgroundOccupying a prominent position on the Kingsway, The Curve development is a portfolio of 27 apartments. The key requirement for Cube Homes was to offer residents high quality, low carbon, affordable and sustainable apartments.After extensive planning, K Systems specified a direct fix system with mineral wool insulation and a silicone render finish. Our Direct Fix system for steel frame structures is KIWA BDA certified and provided the ideal solution for these newly constructed mid-rise apartments.Our team designed a façade solution that delivered modern, thermally efficient and aesthetically pleasing homes, meeting the client’s requirements.Our ServiceDue to the number of fixings and the curvature of the property, this was a technical project which required bespoke detailing.In collaboration with Bowker Sadler Architects and our approved installer Profac, we designed a comprehensive specification and were on-site when required, offering Profac technical and installation support throughout the build.The Direct Fix system specified is a cost-efficient solution for steel frame structures, with fewer components for a simpler and faster install. Direct Fix generates exceptional insulation and with a silicone render finish provides high levels of fire rating (A2,s1-d0), allowing Cube Homes to deliver safe and thermally efficient homes.Technical Project DetailsThe EWI needed to be line and level with the ground floor brickwork. To achieve this specific requirement, 300mm mineral wool (which is deeper than available mineral wool) was specified for the project. This meant 110mm and 190mm boards were combined to achieve the required 300mm.This thicker mineral wool meant that the curved elevation on the building was difficult to achieve. The insulation was facetted around the curve and carefully installed by Profac to create a seamless façade. The 300mm mineral wool resulted in a low U-value of circa 0.10 W/m²K, meaning heating costs for the apartments will be minimal and carbon usage will be reduced to a minimum standard.For the finish, silicone render (TC 15) was specified to create a striking curved elevation. Silicone TC incorporates the benefits of silicone technology to provide a water repellent finish with a fresh and modern appearance. The silicone allows water vapour to pass freely through the render whilst allowing the finish to remain weather resistant, making it the ideal solution for a low maintenance, long-term finish.

Hockley Mills is a prestigious mixed-used development comprising 395 apartments and 28,000 sq ft of commercial space with a new entrance to Birmingham’s Jewellery Quarter train station – and undercroft parking for 116 cars. Car parks present a unique set of challenges when it comes to the specification of soffit insulation and Hockley Mills was no exception. There were several factors to consider. As well as thermal performance, fire safety was essential – so the insulation had to be non-combustible. It also needed to reduce sound transfer to ensure that residents and workers in the building would not be disturbed by vehicle noise from the car park below.  As well as meeting the specification factors, the insulation needed to be delivered to site in line with a tight schedule of works; an issue that was more complex than usual because it was set against a backdrop of heightened demand for construction products such as insulation.  Meeting the brief With this in mind, Sir Robert McAlpine Ltd approached its Strategic Supply Chain Partner, Knauf Insulation, to discuss the best available solutions for the Hockley Mills car park. Knauf Insulation’s Project Specification Team conducted U-value calculations and recommended that 130mm Rocksilk® Soffit Linerboard would meet the three critical performance requirements of the brief. Manufactured from rock mineral wool, Rocksilk® Soffit Linerboard is designed to insulate structural soffits in applications such as open-sided car parks. It has a thermal conductivity of just 0.034 W/mK, so will deliver the stipulated 0.16 W/m²K U-value required for the separating floor. It is non-combustible with the best possible Euroclass A1 reaction to fire classification, so will not add to the development or spread of fire should it occur. This means it is ideal for enhancing the fire safety of buildings of any height.  Rocksilk® Soffit Linerboard also has excellent sound absorption characteristics, so will help to reduce the transfer of noise from the car park to the properties above. Additional advice and support Once the product had been determined, the Knauf Insulation Project Specification Team provided details about the choice of finish available. Sir Robert McAlpine Ltd opted for Rocksilk® Soffit Linerboard Standard, which has a black tissue face finish. The Project Specification Team also advised on the required fixing pattern and set up meetings with their fixing partner who provided technical support such as pull-out value calculations. When it was time for Sir Robert McAlpine Ltd to order the insulation for Hockley Mills, there were high levels of demand across the whole construction sector causing significant challenges in obtaining materials. Knauf Insulation worked closely with distributor CCF to ensure the insulation was delivered to site in full within the required time frame. Wider benefits of Rocksilk® Soffit Linerboard Standard Rocksilk® Soffit Linerboard Standard has been designed for ease of correct installation. Its enhanced rigidity means it can be quickly manoeuvred into place. Once in position, the mineral wool adapts to the substrate preventing gaps that can reduce thermal, fire and acoustic performance.  Rocksilk® Soffit Linerboard Standard also contributes to the building’s sustainability credentials. It is manufactured with ECOSE® Technology, Knauf Insulation’s unique bio-based binder that contains no added formaldehyde or phenol. It is made from natural raw materials that are rapidly renewable, and is less energy-intensive to manufacture than traditional binders. Products made with ECOSE® Technology are soft to touch and easy to handle. They generate low levels of dust and VOCs, and have been awarded the Eurofins Gold Certificate for Indoor Air Comfort. This means they are kinder to the installers who use them too. By working with their Strategic Supply Chain Partner, Knauf Insulation, Sir Robert McAlpine Ltd received the technical and product advice they needed to choose the right soffit solution for Hockley Mills. A solution that will ensure residents are warm and comfortable, as well as helping to keep them and their homes and businesses fire safe. 

This project involved the construction of a Data Centre just outside Dublin, with a focus on incorporating a green roof. MOY collaborated with the client, their design team, the main contractor, and the roofing installer to execute the roof installation for an extensive green roof. The green roof utilized MOY's Paraflex FM Global approved Warm Roof System, featuring Paratherm T 120mm insulation board and an anti-root cap sheet. The final touch included the installation of a sedum blanket grown in Ireland, containing native Irish sedum species registered in the national biodiversity database, creating a durable and vibrant living roof.

A flat roof in the state of Tyrol was used to rigorously test a new non-combustible inverted roof insulation solution for the UK market.

Our underfloor insulation boards complete the energy efficient envelope for a new office building

The unique and stunning curved blue glass cladding specified for the new hospital posed several design challenges. The insulation used needed to provide high thermal performance, be able to conform the curved surface and be completely non-combustible since the building is in excess of 18m. SuperFOIL Insulation was approached to provide replacement insulation that would meet all fire safety standards and which could be applied without requiring changes to the exterior or interior design of the building. After careful consideration as to what would be the most suitable solution, we supplied 5,500m² of our non-combustible SFNC insulation. SuperFOIL SFNC is the only insulation of its kind to be certified by the Building Research Establishment (BRE) as European Class A1 Non-Combustible, which is the highest possible rating of fire safety.

The unique and stunning curved blue glass cladding specified for the new hospital posed several design challenges. The insulation used needed to provide high thermal performance, be able to conform the curved surface and be completely non-combustible since the building is in excess of 18m. SuperFOIL Insulation was approached to provide replacement insulation that would meet all fire safety standards and which could be applied without requiring changes to the exterior or interior design of the building. After careful consideration as to what would be the most suitable solution, we supplied 5,500m² of our non-combustible SFNC insulation. SuperFOIL SFNC is the only insulation of its kind to be certified by the Building Research Establishment (BRE) as European Class A1 Non-Combustible, which is the highest possible rating of fire safety.

ChallengeThe Building Centre, a central information point for all sectors of the construction industry, recently refurbished its London based headquarters. The second stage has seen Knauf Insulation Acoustic Roll supplied to the Construction Products Association, the UK Green Building Council and Design for Homes offices located on the first floor.In order to maximise all potential space available to the offices, it was essential to select a product that would take up as little space as possible, while satisfying the environmental and acoustic criteria required to achieve the BREEAM ‘excellent’ rating.SolutionTo accomplish this, 50mm Acoustic Roll was specified as it is lightweight, flexible, non-combustible and provides a high level of sound absorption, furthermore, it has been specifically designed for friction fitting between members at 400mm and 600mm centres. Acoustic Roll significantly improves the sound insulation performance of partitions whilst at the same time delivering improved thermal and fire performance. Plus, thanks to ECOSE® Technology, offers outstanding environmental credentials.Knauf Insulation products with ECOSE® Technology are made with a formaldehyde free binder technology derived from rapidly renewable, bio-based materials, which reduces embodied energy and delivers superior environmental sustainability. The insulation doesn’t look or feel like any other insulation. It is naturally brown in colour as there are no artificial colours or dyes added and it produces a ‘super softer’, odourless and easier to handle insulation.Colin Henderson, CEO of the Building Centre comments on how specifying Knauf Insulation was an easy decision to make: "After looking at the requirements and from our existing knowledge of Knauf Insulation, we knew the company would be able to meet all our needs quickly and efficiently."Maria Morgan, Market Manager – Building, Non Residential at Knauf Insulation explains: “Our unique position in having a broad product range, coupled with our expertise within the industry, enabled us to fully advise and install the appropriate insulation solution for the Building Centre.”

BackgroundLocated in Stroud, the Park Parade, Park Road refurb project was part of a large refurbishment planned by Stroud District Council. The shopping area and sheltered accommodation scheme were given a complete revamp with internal and external work being completed.MD Group from Bristol were awarded the contract by Stroud District Council and were appointed as the main contractor. A new external wall insulation system was installed, along with an extensive refurbishment to the communal areas, external balconies and roofing. Our approved installer Elite Rendering Systems were contracted by MD Group to complete the exterior wall insulation.Alongside Elite, we transformed the premises aesthetically creating modern homes and commercial premises. The buildings were given a new lease of life, and together with Elite we delivered safe, stylish and energy efficient buildings that will help to reduce fuel bills for residents and help decarbonise the Council’s housing stock.Our ServiceOur Technical team were available to provide hands-on-guidance throughout the duration of the project. As part of our service commitment, our K Systems Site Technician regularly visited the project to inspect progress, offer support and ensure high levels of construction quality.As the ground floor of Park Parade is used for commercial premises, one challenging aspect of the project was the detailing and installing around complex interfaces such as air conditioning/refrigeration units. We transformed the outside of the properties with a durable, low maintenance solution that is fully compliant with fire regulations and fulfilled the Council’s criteria.The combination of finishes used not only delivered the desired contemporary aesthetic but provided an additional benefit of cost savings for the client. Residents of Park Parade, Park Road will enjoy reduced energy bills and better living conditions thanks to the U-value improvement.Technical Project DetailsFollowing design and site meetings with the K Systems Technical team, K Systems M (Mineral Wool) was specified by Bailey Partnership Architects and Stroud District Council. This system incorporates eco-friendly mineral wool insulation boards. As an A2-s1, d0 firerated solution, it is widely specified to provide thermal and aesthetic improvements to buildings, reducing energy usage and therefore energy costs.K Systems M, utilising non-combustible insulation, ensured the latest building safety regulations were met. Thanks to its exceptional properties, the thermal performance of the walls after installation has been significantly enhanced. A U-value of 0.27 W/m²K was achieved, which will help to reduce the residents fuel bills and reduce the level of condensation forming on the inside walls – two key objectives for the client.For the finish, high-performance Silkolitt+ silicone renders were supplied along with our lightweight synthetic brick slips (VBriQ). This combination improved the aesthetics of the buildings for its residents.Silkolitt+ silicone thin coat renders are available in a wide range of colours offering a contemporary finish. The excellent vapour permeability allows the building to breathe and prevents interstitial condensation. The flexibility of the finish provides resistance against cracking and increases the durability, ensuring a long-lasting finish to the properties. It is very user friendly, and its hydrophobic properties reduce maintenance requirements.Accredited by the BBA, the K Systems VBriQ brick slips provide top tier Cateogory 1 impact performance and are ideal for use on this project. This lightweight system is quick and simple to install and has high UV resistance while also allowing the original brick colour to be maintained. An extremely durable finish that will withstand the day-to-day demands placed Park Parade, Park Road.

Built from traditional stone and slate, Preston Springs, a four bed home in Leyburn, North Yorkshire, may look like a typical new-build property, but it is far from it. Designed by architects LEAP, Preston Springs is a Passivhaus, meaning it is ahead of its time in terms of air quality, comfort and reduced energy use. It is one of the only properties of its type in the local area, with just over 1,000 Passivhaus properties in the whole of the UK. Passivhaus is a voluntary standard for designing and building very low energy properties that offer high levels of comfort for their occupants. To achieve this, the levels of air tightness and thermal performance far exceed those mandated by building regulations. To meet planning constraints, Preston Springs has been built using a conventional cavity wall construction. The 300mm cavity was fully-filled using two layers of 150mm Knauf Insulation DriTherm® Cavity Slab 34. Manufactured from Glass Mineral Wool, Knauf Insulation DriTherm® Cavity Slab is specifically designed for cavities and uses a water repellent additive to prevent water ingress, making it ideal for its exposed location close to the Yorkshire Dales.Knauf Insulation DriTherm® Cavity Slab 34 was chosen over rigid board insulation. Its structure meant the stone masons could cut and fit the insulation easily on site to ensure it fully-fills the cavity, touching both leaves continuously. This prevents undesirable air gaps that reduce thermal performance. It is worth noting that masonry construction with partially-filled cavities are particularly prone to air gaps between insulation boards or breaks in contact between the insulation and the wall surface.Secondly, because detailing at junctions between the building elements and the openings meant thermal bridging was virtually eliminated, a more cost effective insulation specification could be chosen. Principal architect Mark Siddall was confident that Knauf Insulation DriTherm® Cavity Slab 34 would deliver the 0.1 W/m2K U-Value required to help the project achieve Passivhaus certification. For the loft, Supafil® Loft Blowing Wool was specified after extensive consultation with Knauf Insulation’s Technical Support Team. While Supafil® Loft is very popular in Scandinavian countries, it is not widely used in the UK. However, Siddall believes that blown insulation has a distinct advantage over other insulation types when working towards very high levels of thermal performance. He said: “The advantage of Supafil® Loft insulation is that it can get it into all the nooks and crannies very quickly and easily. This makes it a low-cost solution as far as labour is concerned because installers don’t have to cut and scribe around individual trusses at 400 and 600mm centres – something that would take a huge amount of time. By avoiding these air gaps, the roof can be expected to deliver the thermal performance that was specified.”It was not just the use of Supafil® Loft that was unusual on the Preston Springs project, but its depth; 700mm of Supafil® Loft was installed, delivering a U-value of 0.06, which Siddall believes makes it one of the most highly-insulated lofts in the UK.Siddall explains that to achieve Passivhaus standard, installation is hugely important. He said: “The only way to close performance gaps is through high quality workmanship. I have used the same construction team on several projects. I ensured that the installer had received the necessary training on how to install the Supafil® Loft insulation correctly, so I had the quality assurance that it would perform as specified in practice.”Steve Wise, Programme and Product Development Manager at Knauf Insulation added: “It is always exciting to work on projects that feature products not commonly used in the UK or in applications that differ from the norm, such as the 700mm Supafil® Loft at Preston Springs.“Passivhaus projects allow us as manufacturers to explore what is possible. Preston Springs demonstrates how environmentally-focused design, high performance products and high quality installation can deliver and meet even the strictest thermal standards in a real-world environment.”Typically, Passivhaus properties achieve a 75% reduction in space heating requirements, compared to a standard UK new build. While monitoring is ongoing, anecdotal evidence from the owners show that Preston Springs is performing as designed, maintaining a temperate climate throughout the year. During ‘The Beast from the East’ the internal temperature was a reported 19°C without heating, while the external temperature plummeted to -6°C. Furthermore, the owners report they are delighted with the low energy bills thanks to the very high thermal performance of the insulation combined with the heat recovery system.

Recticel Insulation’s innovative insulation board - Eurowall +, which has a tongue and groove joints on all four sides to ensure an airtight fit and improved thermal performance, was selected for a desirable new housing scheme built beside one of England’s eminent waterways.The Magenta Court development in Apsley, Hemel Hempstead is a multi-award nominated social housing project on behalf of Dacorum Borough Council. The £6.5m scheme, which stands alongside the famous Grand Union Canal, comprises 29 one-and-two bedroom flats within four blocks. The buildings’ design was inspired by the surrounding wharf architecture present in a nearby listed cottage, papermill and Apsley Lock.Being delivered by main contractor Jarvis Contracting, working with architects RG+P, key to the programme’s success was achieving an energy-efficient building fabric. This led to the specification of Eurowall®+, a high-performance PIR solution from Recticel.This flagship product helps to achieve a 0.18 U-value with a 90mm-thick panel in a 100mm cavity. The lightweight, easy-to-handle board features a tongue-and-groove joint on its four sides, allowing it to be used as full-fill cavity wall insulation with a 10mm clear cavity. The additional space makes for a rapid, more convenient fit for bricklayers when it comes to installation.Simon Blackham, Technical Manager at Recticel explained:This was a tremendous project to be involved with. It’s a superb housing scheme in a great location. With the buildings’ overall thermal efficiency among the priorities, it’s the type of project Eurowall®+ was created for. Further, it enhanced the programme’s sustainable credentials by reducing on-site labour times, thanks to the additional space it affords installers.Eurowall®+ is an exemplar of how high-performance materials can maximise a home’s thermal performance through a fabric-first approach. Its selection for the Magenta Court development was crucial to the creation of a number of desirable, energy-efficient affordable homes, whilst playing a part in ensuring the contractor remained on track to complete the project to the agreed timeframe. About Eurowall®+:Eurowall® + is a premium, high performance full fill insulation board with precision cut tongue and groove joints on all four sides. This ensures that the boards lock tightly together minimising heat loss through thermal bridging. This unique joint offers increased protection against wind driven rain as well as improved windtightness. Eurowall® + is also designed with a 10mm cavity requirement in mind, so that space can be left for conventional bricklaying techniques.

ChallengeThe project, at Winston Court in North Walsham, is organised by Benjamin’s Building Company, part of The Benjamin Foundation. Benjamin’s Building Company is a social enterprise that works to create homes, training and employment opportunities for vulnerable people. The ambitious venture will see the development of four, self-contained accommodation units. Seeking help in this task, The Benjamin Foundation turned to CRASH for assistance in locating suppliers and materials.SolutionKnauf Insulation donated 24 rolls of 150mm Loft Roll insulation, 48 rolls of 140mm Rafter Roll 40 and 72 rolls of 110mm FrameTherm® 32 for the project. These glass mineral wool insulation products are extremely easy to handle and install, being lightweight and easily cut to size, benefiting the large project.BenefitsBy its nature, Loft Roll is non- combustible and classified as Euroclass A1 to BS EN ISO 13501-1, a crucial requirement to any public building. Additionally, Loft Roll insulation has been manufactured with ECOSE® Technology which delivers superior environmental performance, as the binder technology is up to 70 per cent less energy intensive than traditional binders. The technology has been developed for Knauf Insulation’s glass and rock mineral wool products, enhancing their environmental credentials without affecting the thermal, acoustic or fire performance. Insulation products made with ECOSE® Technology contain no dye or artificial colours – the colour is completely natural.

Ashwood House is a development of Manhattan-style apartments in the desirable Surrey commuter town, Camberley. Situated in a converted 1960s office block, developer Berkeley Homes Southern Ltd needed to ensure the 116 luxury flats were as energy efficient as possible.This was a particular concern for the properties situated above the first floor car park, which has open walls to allow adequate ventilation of exhaust fumes. As a result, the specification stipulated a U-value of 0.25 W/m²K.Chris Body, Business Development Director at RPN Ltd, the specialist sub-contractor at Ashwood House said: “We approached several insulation manufacturers to discuss the different options available. Knauf Insulation’s Rocksilk® Soffit Linerboard Standard met the brief in terms of thermal and fire performance. It can be used on uneven substrates and looks fantastic – all of which were key priorities for Berkeley Homes.”Aesthetic appealHow the insulation looked was an important part of the brief as Berkeley Homes wanted a solution that would be aesthetically pleasing. Rocksilk® Soffit Linerboard Standard features a black glass veil facing, so no additional finishing was required. This meant that RPN Ltd has been able to install the slabs perpendicular to the ring beam to create a quilted effect across the ceiling.A high-performance solutionThe other specification factors were thermal performance and fire safety. Knauf Insulation’s Technical Support Team undertook U-value calculations to determine that 130mm Rocksilk® Soffit Linerboard Standard would be required. It is manufactured from Rock Mineral Wool, has a thermal conductivity of just 0.034 W/mK and is designed to insulate structural soffits in applications such as open sided car parks.It is non-combustible with the best possible Euroclass A1 reaction to fire classification, so will not contribute to the development or spread of a fire should it occur. Rocksilk® Soffit Linerboard Standard also has excellent sound absorption characteristics so will help to ensure that residents are not disturbed by the noise of cars parking beneath their flats.Better for installersThe insulation was supplied by distributors CCF Ltd who delivered it to the site in line with the schedule of works. It was then installed by RPN’s specialist team.Rocksilk® Soffit Linerboard Standard is easier to install correctly than other insulants. The product recipe makes each slab rigid, which ensures the insulation maintains continuous contact with the substrate, preventing gaps that can reduce thermal, fire and acoustic performance.Rocksilk® Soffit Linerboard Standard is manufactured with ECOSE® Technology, Knauf Insulation’s unique bio-based binder that contains no added formaldehyde or phenol. It is made from natural raw materials that are rapidly renewable, and is less energy-intensive to manufacture than traditional binders, so it is more environmentally friendly.Products made with ECOSE® Technology are soft to touch and easy to handle. They generate low levels of dust and VOCs, and have been awarded the Eurofins Gold Certificate for Indoor Air Comfort. This means they are kinder to the installers who use them too.A safe solutionUltimately, using Knauf Insulation’s Rocksilk® Soffit Linerboard Standard means the Ashwood House car park ceiling not only looks aesthetically pleasing, but it helps to meet the increasing demand for non-combustible insulation in car parks too.

When Formby Point Construction needed to specify the insulation for The Gables, an exclusive housing development in Crosby, the project had multiple objectives. Firstly, the company wanted to go beyond the thermal and acoustic requirements outlined in the building regulations. Secondly, with such a large number of applications across multiple construction types, Formby Point Construction wanted to use one manufacturer and supplier to specify the correct product for each application. This would ensure ease of installation and ensure the project was delivered on budget.With this in mind, Formby Point Construction, consulted Formby-based builders’ merchant, Huws Gray, who referred it to Knauf Insulation.For the separating floor applications, Knauf Insulation recommended Knauf Insulation OmniFit® Roll 40, a versatile, non-combustible Euroclass A1 reaction to fire classification Glass Mineral Wool insulation that provides both excellent thermal and acoustic performance. Knauf Insulation also recommended Knauf Insulation DriTherm® Cavity Slab 32 for the masonry cavity external walls, Knauf Insulation Masonry Party Wall Slab for separating walls to comply with Document E and Knauf Insulation Loft Roll 40 for the insulation of the loft.As well as considering the comfort of the homeowner, Formby Point Construction considers the welfare of its employees as part of its decision making. In addition to excellent thermal and acoustic performance, Knauf Insulation scored highly on this aspect thanks to the ECOSE® Technology, its patented sustainable bio-based binder. Products manufactured with ECOSE® Technology contain no added phenol or formaldehyde, and they are 70% less energy-intensive than products manufactured with traditional formaldehyde-based binder. They have no odour, are softer to touch, making them much more pleasant to handle and install. They have also achieved the best possible Eurofins Gold Certificate for Indoor Air Comfort, contributing to a high level of indoor air quality for installers and homeowners alike.Once the specification had been agreed, Knauf Insulation then worked with Huws Gray to price the project and take advantage of volume discounts. This meant that Formby Point Construction had some additional budget for insulation. The company therefore decided to install Knauf Insulation Acoustic Roll within the stud walls between all rooms, going above the minimum standard required between bathrooms and bedrooms outlined in Document E.Thanks to Formby Point Construction’s commitment to going above and beyond the regulations, and Knauf Insulation’s high performance Glass Mineral Wool insulation, homeowners at The Gables will enjoy quieter, warmer homes. To see how Knauf Insulation can help with your insulation needs, check out our Housebuilders Hub.https://www.knaufinsulation.co.uk/Housebuilders-hub

One Hyde Park, owned by CPC Group, is a high-end residential and retail park. Due to the nature and standard of the construction, developers required the highest quality tools, equipment and materials to construct the building. The ambition was to keep the design lines sleek, elegant and spacious, while still achieving the required high thermal performance expected in in a modern prestigious development in the heart of London. Insulating the floors introduced another level of complexity and so the search for something that was up to the challenge began.After meeting with developers, our experts concluded that SuperFOIL SFUF would be the most practical and efficient solution to the project. With a slim profile of just 6mm and R value of 0.8, SFUF gives a great solution where floor depths are limited. SFUF has a slightly different build-up to our typical roof / wall products in that it doesn’t include layers of wadding, this makes it much slimmer and less compressible, making it an ideal combination for solid floor applications. Unlike our other products, SFUF is also typically installed with no air gaps which, again, contributes to its slim profile. The top layer of SFUF is a polythene membrane which provides protection allowing it to be screeded onto directly with no need for additional layers to be installed. This also makes SFUF ideal for use with underfloor heating systems. The application of SuperFOIL SFUF was a success and the building was finished in 2010. Starting at £20million, One Hyde Park residential properties began selling soon after the completion of the complex. SuperFOIL SFUF provided a solution to achieve a high level of thermal performance in this prestigious development. SFUF has an impressive thermal r-value achieving excellent performance in a minimal amount of space 

Agar Grove is a multi-award-winning development, created by 5-star housebuilder, The Hill Group for Camden Council, as part of their Community Investment Programme. With a proposed 507 new homes, once complete Agar Grove will be the largest Passivhaus development in the UK.Knauf Insulation’s glass blowing mineral wool Supafil® has been specified for Phase 1C of the project, which comprises 125 homes. We spoke to Hill’s Senior Technical Coordinator, Ben Clarke and Senior Contract Surveyor, Matthew Bricknell about the needs of the project.Prioritising real performancePassivhaus is an internationally recognised building standard, resulting in very high energy efficiency. For the residents of Agar Grove, this will mean greater thermal comfort, alongside reduced energy bills.Achieving the Passivhaus standard requires a complex balance of design factors to create high levels of insulation and airtightness. To ensure their designs would deliver in the real world, it was therefore important for Hill to specify products which would perform as well in situ as they did on paper.As Ben explains, “We chose to use blown-in insulation because of its real-world thermal performance. Installing insulation boards can sometimes mean gaps are left between them, which leads to cold bridges in the build. But that can be more easily avoided with a blown-in product.”To provide further quality assurance, Hill has appointed contractors from Knauf Insulation’s network of Approved Supafil® Installers. Trained by Knauf Insulation’s own Regional Technical Managers, they have the necessary product knowledge and expertise to ensure a quality installation.Using Supafil® will also mean that less product is wasted on-site. When rigid insulation boards are cut to size, offcuts are often discarded because they are difficult to use elsewhere. By contrast, Supafil® has a zero-waste potential. When the cavity is full any excess product remains in the insulation blowing machine hopper, ready to be installed on the next plot, and when the job is complete Supafil®’s packaging can be recycled. Ben says: “As a responsible business, Hill is always looking for ways to reduce waste on our projects wherever we can, and this solution will help us to do that”.Evidencing qualityThe Passivhaus accreditation requires Hill to demonstrate the energy efficiency of Agar Grove, which will involve data collection throughout the build and thermal imaging of the finished product. As Matt explains, “We have a significant quality assurance requirement. We need to be able to show Camden Council that we have insulated the building as specified and that’s not always a simple task – particularly with blown-in solutions which by their nature, are hidden within the cavity.”To help meet this challenge, Hill’s Approved Supafil® Installers will use Knauf Insulation’s app-based site reporting system, KinetiK®. The app allows the installer to select their site and plot number on their mobile device, photograph the elevation, and then scan each pack of Supafil® as it’s installed.Matt continues, “KinetiK® will enable us to confirm that the insulation has gone in as specified. This is essential for our client, but it also gives us confidence too. If areas are missed during an install, there are time and cost implications, so having a tool like KinetiK® will provide us with added assurance that the cavity has been fully filled.” Agar Grove will be the latest in a number of Passivhaus projects which Knauf Insulation has supported. Read more about Preston Springs, North Yorkshire here and Denby Dale, one of the first certified Passivhaus homes in the UK, here.

The Protec System was used to waterproof the domed green roof areas of this striking, sustainable house development which was featured on Chanel 4’s Grand Designs. With an ambitious vision and a tight budget, Robert and Milla Gaukroger set about transforming a dated 1980’s house overlooking Lake Windermere into a state-of-the-art, eco-conscious home. Since the house lay in beautiful hillside surroundings, in order to blend into this setting, the domed roofs of the house were to be covered with a wildflower meadow mix to provide a green roof construction.The SolutionThe Protec System was chosen as a waterproofing membrane for the roofs as it is ideally suited for green roof applications. Lightweight, flexible and highly durable, the system can easily accommodate structural expansion movements and is tough enough to resist root penetration. The Protec system was applied to over 350m2 of domed roof to provide a long-lasting waterproofing membrane.The key reasons why Eastleigh chose Protec are the same reasons that has seen it become one of the fastest growing cold-applied liquid roofing systems in both the new build and refurbishment markets. Combined with the timber cladding to the verticals of the building, the finished aesthetics of the development blended seamlessly with the surrounding areas.A warm roof build-up that can be made waterproof at multiple stages:For larger projects the Protec system can be made temporarily waterproof at two stages prior to the application of the full waterproofing system. The first stage is upon installation of the sealed, aluminium-faced vapour barrier.The second phase follows the reinforcing of the foil-faced insulation board joints with Protec resin and taping mat. This enables a much more controlled approach to the installation with a greatly reduced chance of rain causing disruption and damage during the works.Highly flexible membrane:Regardless of the size of the roof, Protec forms a homegenous membrane, without a single joint or seam and without the need for any expansion joints.RapidCure technology for quick installation:The application of Protec as a liquid, through to the curing process where a solid, tough membrane that can be walked over, takes only 30 – 60 minutes. This enables large sections of the roof to be fully completed in a short space of time.Installing the Roofing SystemsThe Protec System provided waterproofing to all flat roof areas as well as the extensive parapet wall sections. The roof areas were made up of two designs: the Protec Warm Roof System (approx 7,500m2) and Protec applied to concrete as part of an inverted roof design (approx 1,000m2).The roof installation was carried out with a planned, phased approach that was synchronised to the wider construction schedule. For the warm roof areas, the first stage was to fill the troughs of the structural metal roof deck with acoustic insulation infills that will dampen external noise within the leisure centre. Next, the crowns of the deck were primed ready to receive the self-adhesive vapour barrier.The use of a high-performance aluminium vapour barrier not only eliminates the risk of condensation within the roof, but also provides temporary waterproofing protection, which is extremely useful on larger works such as this.The Polyroof RES Insulation boards, which comprised of a two layer system totalling 170mm to achieve a U-Value of 0.14 W/m2K, were bonded using high-performance PU adhesive to the vapour barrier. Following the wind uplift calculations it was determined that mechanical fixings were not required for this application – making for an extremely rapid installation. As you can probably imagine, fixing through 170mm of insulation into the crowns of the metal deck can be a tricky and time-consuming task.A key advantage of using a tongue and groove insulation system is that the finished surface of the roof is smooth and level without any unsightly board steps that can also lead to standing water issues. The insulation board joints were sealed using Protec resin with Polymat Taping Mat 450 which, in addition to providing additional strength to the joints, also creates a temporarily waterproof layer.For the inverted roof sections, Protec was applied directly to the primed concrete/screed surface. The membrane was inspected by Polyroof Technical Services, signed off and then covered with inverted roof components. An interesting fact when using Protec in inverted roof situations is its incredible durability performance – as tested by the BBA, Protec “can provide an effective barrier to the transmission of liquid water and water vapour for the design life of the roof in which it is incorporated”.Monitoring and CompletionThroughout the duration of the contract, Polyroof Technical Services carried out regular site visits that were reported back to Interserve as part of Polyroof’s free-of-charge contract monitoring service. This enabled the client to keep up-to-date with the progress of the roof installation in detail and also provided peace of mind that the original specification was being closely followed and implemented.Polyroof worked closely with the Roofline Group during the installation, enabling the challenges were identified and solved in an efficient and coordinated manner – saving the client time and money.

Knauf Insulation is delighted to have been appointed as preferred insulation supplier to innovative new housebuilder, HarperCrewe. In addition to supplying their Supafil® and Loft Roll glass mineral wool solutions, Knauf Insulation will provide support to HarperCrewe’s team, from the design phase through to installation. Their first collaboration is already underway at The Steadings, HarperCrewe’s new neighbourhood of homes in Cirencester, and future projects look set to benefit from the same end-to-end support service. John Nunney, Commercial Director for HarperCrewe explains, “Outstanding build quality is at the forefront of our approach but, as a smaller business, it can be harder to get first pick at the best products on the market. Supafil® 34 is in demand because it’s straightforward to install and it works as it’s supposed to, so our relationship with Knauf Insulation is very important to us. It means we have consistent access to reliable, high-quality products that form an essential part of our builds.” Working closely with HarperCrewe’s design team from the very beginning of the process, Knauf Insulation’s Housing Specification Managers have already helped the business to navigate the latest updates to Part L of the Building Regulations. Advice on SAP calculations and detail drawings, as well as guidance to optimise their insulation specification have helped HarperCrewe’s team meet the new requirements, without compromising on their existing priorities. Of course, getting the specification right is just the first step, so Knauf Insulation’s support will continue well beyond the design phase. As projects move into construction, Housing Specification Managers will attend site start meetings and discuss each plot with HarperCrewe’s team. This will allow them to identify the right time for installation to take place, preventing the product’s performance from being compromised by subsequent construction work. When that time comes, Knauf Insulation’s Regional Technical Managers will be on-hand to offer advice to site teams as needed and ensure a smooth installation.  For projects using Supafil® insulation, HarperCrewe will have access to a list of Approved Supafil® Installers, who have the necessary training and experience to deliver a high-quality installation. Those installers will in turn have access to KinetiK®, Knauf Insulation’s app-based site reporting system that creates an instant digital record of installations.  Using the app on their mobile device, the installer will simply select their site and plot number, take a photo of each elevation, scan the unique QR code on each pack of Supafil®, and install the product as specified. HarperCrewe will then receive confirmation that the specified product has been installed. Not only will this provide additional confidence in the specification integrity, it will also streamline HarperCrewe’s reporting process, giving them more time to focus on the ‘big picture’ aspects of their development. 

CHALLENGEAs part of a full exterior refurbishment, building envelope contractor, Alumet, required a new façade system that would transform and modernise the exterior of the Jubilee House building, which was originally installed in the early 1970s. Coupled with this was the requirement to improve thermal and energy efficiencies.SOLUTIONKnauf Insulation supplied its Rocksilk® RainScreen Slab to ensure optimal fire, thermal and acoustic performance. The key to Knauf Insulation securing the project was the ability to provide in depth technical support, including complex 3D heat flow modelling calculations which took into account the specific system brackets, which act as a significant cold bridge within rainscreen cladding systems.Knauf Insulation’s Rocksilk® RainScreen Slab was installed on the brick facade of the existing building, which once complete, significantly improved the U-value thus reducing the heat loss through the wall.The insulation layer is a fundamental component of any successful rainscreen cladding system and mineral wool insulation delivers a number of advantages for this type of application. Rocksilk® RainScreen Slab is a Rock Mineral Wool slab containing a water repellent additive, designed for use on masonry wall constructions and as the outer insulation layer in steel frame projects.Quick and easy to install, the product is simple to cut and the slabs knit together to create a snug fit, with no need to tape the joints as may be required with rigid foam boards – ensuring maximum acoustic and thermal performance."We wanted to turn our headquarters into a thermally efficient building and to really project a modern ‘green’ image. The Schueco Façade system, along with Knauf Insulation’s products, helped us to achieve this as well as dramatically reducing our carbon output.We have received some fantastic feedback from local residents saying how good the new façade looks and coupled with the improved thermal efficiencies, we are very pleased."- Alumet Director, Dean Walton