"insulation"

A range of premium and high performance products from Kingspan Insulation has been installed on a stunning new beachfront home on the Isle of Wight, featured on Grand Designs. This includes Kingspan Kooltherm K8 Cavity Board, which was used to insulate the majority of the walls throughout the property, and Kingspan Kooltherm K7 Pitched Roof Board, which was were applied to the ground floor overhang. With thermal conductivities as low as 0.020 W/m.K, the products delivered the required thermal performance with a slim build-up, helping to maximise space within the rooms.

Kingspan cavity wall insulation is helping to insulate a rural development of affordable homes.

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 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.

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.

A 200 sqm, highly energy-efficient new build project in a remote location in the Highlands of Scotland. Built using sustainable materials, and with the timber frame sourced locally and wood fibre insulation used alongside SuperFOIL Insulation throughout. Powered throughout the year using solar PV and battery storage.Looking to increase the thermal resistance of the building envelope in order to reduce energy usage. With the building using an air source heat pump and underfloor heating, they wanted to make sure that any heat loss was minimised and it was vital that they chose the correct insulation for the walls and roof.Solution: SuperFOIL SF19+ is a multifoil product with a total of 11 layers, made of wadding, aluminium coated PET layers and Foil Laminated Outer Layers. At only 40mm thick and providing an R-value of 2.14 when used in a roof, SF19 can be used on its own or in combination with other types of insulation. A fully flexible product that provides a vapour control layer as well as acting as a radiant barrier.

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

THE PROJECT: Recticel Insulation supplied the high quality insulation solution for an old school in Oxford. The main aim of this project, carried out by Touchstone Lofts, was to convert an uninsulated historic school building originally constructed in 1860 into a modern, energy efficient four-bedroom residential unit. The contractor endeavored to create a two storey dwelling and hoped to minimise headroom loss with insulation in both the floor and pitched roof, therefore selecting the right product was paramount.THE SOLUTION: Eurothane® GP, a low-thermal conductivity PIR insulation panel for use in multiple building envelope applications, was the obvious choice for The Institute’s ground floor and loft insulation. The product's thermal performance of λ = 0.022 W/mK enabled an appropriate thickness selection, so the desired minimum headroom loss was achieved giving the completed build an energy efficiency rating of B. The contractor was thrilled with this given the constraints associated with retrofitting insulation into a period building.Paul Johal, Owner of Touchstone Lofts explained:"Recticel’s insulation provided us with a thermal solution that achieved the required U-value targets whilst keeping the overall thickness to a minimum. The quality of the product is excellent and at a competitive price. The extremely proficient technical team of Recticel Insulation were very responsive with U-value calculations, meaning we could move forward with the project more efficiently. Having the right advice and products from Recticel certainly played a crucial role in achieving our aims. We are delighted with the final outcome."About 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 installers

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.

THE PROJECT: Recticel supplied the low-thermal conductivity insulation boards to ensure new-build homes within a large residential development attained the required levels of thermal performance. The 450-home complex in Salisbury Plain, Wiltshire was fitted with Eurothane® GP boards, which were installed within the properties’ timber-frame cassettes. The insulation was specified for its excellent thermal conductivity of 0.022W/mK. In addition, the boards’ consistent tolerances, straight edges and flatness enhance their usability without compromise to durability. The cassettes containing the insulation were assembled off-site before being installed within the properties’ walls.THE SOLUTION: For this project, the client required a high-performance PIR insulation board that offered walls throughout its collection of houses and bungalows superb thermal performance. This, along with their easy handling ability, made Eurothane® GP boards the ideal solution. It led to the development achieving a U-value of 0.21W/m2K which is above the project’s specific regulatory requirements. It means when the first occupants inhabit this beautifully designed, modern development, they will be inheriting homes that are as comfortable on the inside as they are attractive on the outside.Derek Gough, Senior Estimator at Taylor Lane Timber Frame, which delivered the project’s timber frame properties explained:"Our excellent working relationship with Recticel was key to the success of this project. It’s a collaboration that thrives on their products’ quality, technical expertise and our installation skills and long-held construction experience."About 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 installers

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.

This multi award-winning museum has taken form with a copper clad envelope featuring high quality rainscreen insulation and pitched roof insulation

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.”

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.

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

Herefordshire Housing Association, announced plans of a five year project with the aim of improving the energy efficiency levels of its entire housing stock, which includes over 500 Cornish type houses across Herefordshire. Many of these homes were built between 1946 and the 1960’s as a ‘temporary’ solution to the post-war housing crisis and they are easily recognised because of their distinctive Mansard roof structure.The contractors, Merriman Roofing and distributor Encon Insulation were given the target of improving the thermal performance of this insulation in the Mansard roofs to a u-value of 0.30 W/m²K, while minimising the disruption to residents which wouldn’t have been possible using traditional means. Because the houses were occupied, all improvement works needed to be carried out from the outside to minimise the impact on the occupants. Unfortunately, due to the Mansard roof which covers the second storey of the building, it’s difficult to significantly improve the energy efficiency of the homes using traditional materials and tools, with a u-value target of 0.30 W/m2.K, traditional insulation was too thick. In the past, efforts to improve the insulation of the Cornish-type homes have been limited by the design of the roof. Achieving a good fit within the timber frame using externally applied options has proved to be challenging due to the narrow cavity between the interior wall and the exterior roof and applying products from inside can typically be disruptive and intrusive for occupants.After visiting the houses that required new insulation, our experts came to the conclusion that our SuperFOIL SF40 multifoil insulation would be the perfect solution to the problem. Because SF40 measures to be just 65mm thick when installed, it was a suitable fit for the unusual Cornish-type properties and their distinctive roofs which only allow a narrow space for insulation. Working with, Herefordshire Housing, Encon and Merriman Roofing Contractors Ltd, we have supplied enough insulation to provide for over 500 houses, improving heat retention in the winter and energy efficiency throughout the year. SuperFOIL worked very closely with Hereford Housing Ltd and Merriman Roofing Contractors Ltd to offer a bespoke solution. SF40 was up to the challenge achieving 0.26 W/m2.K, significantly exceeding their target value. A single layer of SF40 provided maximum performance, minimal thickness, improved air-tightness, radiant barrier, huge cost savings and less disruption to the residents.

Four years ago, sustainable developer Citu set out to create homes 10 times more energy efficient than typical UK houses. To do this, the company invested in a state-of-the-art production facility where all the components for its properties are built offsite.Thermal performance is critical to energy efficiency. Citu wanted to go far beyond the regulations to achieve wall build-ups with an extremely low U-value of just 0.10W/m2K. This is at least three times better than the U-value achieved in most new build homes and fifteen times better than older houses.Adding offsite capabilityCitu turned to Knauf Insulation for advice and support in developing the offsite capability required for this level of thermal performance. Knauf Insulation’s Technical Support Team undertook extensive calculations and recommended the Blowing Plate Insulation System to install Supafil® Frame – a high performance, non-combustible blowing wool.Supafil® Blowing Wool lends itself to offsite production because it completely fills the cavity, without any voids even around complex penetrations – something that can occur when insulation slabs or rolls are cut to size. It is also a dry process, so operatives are not exposed to any harmful chemicals and it doesn’t require a dedicated production line.Instead, the system comprises a blowing machine and a filling plate. The system is modular allowing for phased investment. Citu opted to install the blowing machine in phase one, which allowed them to manually fill the panels. Phase two saw the addition of the blowing plate, semi-automating the process.Supafil® Frame can be run by a single operator, fits easily into the existing production line, and can even be moved quickly and swiftly to other areas in the manufacturing facility depending on Citu’s volume capacity requirements.Knauf Insulation’s Technical Support Team provided full training and support during each phase of installation.Insulating the panelsCitu homes are manufactured from wooden panels with a 300mm cavity. The blowing plate is positioned over the panel completely covering the cavity. Supafil® is then blown into the wooden frame to the specific parameters of each panel. All cavities are filled to the correct thickness; something that has been carefully calculated and tested by the Knauf Insulation Technical Support Team to ensure settlement does not occur. And because the machine is programmed to install the exact quantity of insulation required, there’s no waste.Supafil® is a high performance Blowing Wool. It is non-combustible with Euroclass A1 reaction to fire classification as well as providing excellent thermal and acoustic performance. It contains a silicone-based additive to ensure it is water repellent.As well as providing excellent thermal performance, Supafil® has great sustainability credentials. Knauf Insulation’s Glass Mineral Wool contains up to 80% of recycled content. This reduces the amount of virgin materials used and prevents around 60,000 tonnes of glass a year (350 million bottles) from going to landfill or polluting the environment. Knauf Insulation has also invested in advanced compression packaging. This means there’s less packaging used, so fewer lorries on the roads leading to a reduction in transport carbon emissions. All of which helps to support Citu’s goal that every home should be carbon zero to manufacture.By combining modern methods of construction with the very highest levels of thermal performance, Citu and Knauf Insulation are creating homes that reduce energy consumption and carbon emissions – homes that are fit for the future.

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

Tapered roof insulation offers drainage and fabric performance on roof of Grade ‘A’ Office development

THE PROJECT: Recticel supplied the high-performance thermal solution to transform a 100-year-old property in Moseley, Birmingham. Divided into nine apartments, in which two were refurbished to create one, two-storey home, the project caught the attention of the producers of Channel Four's Old House to New Home. Connecting a ground floor property to a flat above led to the creation of a modern and stylish home trimmed with decorative reminders of its structural origins.THE SOLUTION: Eurothane® GP, a high-performance rigid PIR foam board, was selected for the new home's pitched roof, framed wall and floor. Eurothane PL, Recticel's insulation and plasterboard solution was fitted to the property's existing, cavity-less, nine-inch exterior brick walls. The well-sized board ensures minimal thermal bridging during construction.Coupled with Eurothane® GP's 0.022W/mK low thermal conductivity, these products were crucial to attaining a good U-value rating. In total, 130m2 of Eurothane® GP and Eurothane® PL panels were installed.The homeowner, Paul explained:"As we were carrying-out most of the building work ourselves we wanted the best possible insulation for the project. Research revealed Recticel's solutions fitted the bill. Excellent thermal performance and simple to-fit, they were a far superior alternative to other insulants we considered. The panels have done so much to create a welcoming and comfortable interior environment."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 installers.Eurothane® PL:Suitable for mechanical fixing or dot and dab fixing, this insulated board is consistently sized with extremely tight tolerances, ensuring thermal bridging is minimised. Factory bonded, the plasterboard provides optimum board dimensions and optimum adhesion between layers.

New primary school building is on course for BREEAM ‘Excellent’ with a specification including underfloor insulation boards

Our tapered roofing insulation was installed on London's first cable car system spanning the River Thames

A stunning community campus is supporting learning, health and wellbeing with a leading specification featuring Kingspan underfloor insulation boards.

London’s oldest station receives a significant upgrade to meet its increasing demands including optimum performance floor insulation

Today’s students demand a high standard of living, and with 348 beds, separate study and social spaces, a dining room and gym, The Malthouse, new luxury apartments in Wilder Street, Bristol have been designed to provide it.Spread over five stories, the external envelope features a combination of different coloured brickwork and rainscreen cladding. AWW Architects had specified non-combustible insulation to meet the requirements of building regulations in England and Wales, which ban the use of combustible materials on the external walls of certain types of buildings over 18m.With this in mind, main contractors Watkin Jones contacted Knauf Insulation’s Technical Support Team to determine which insulation solution would be most suitable to achieve the required U-value of 0.19 W/m²K. They also wanted to determine whether the wall build-up would prevent cold bridging and act as a vapour barrier.The Technical Support Team undertook complex 3D U-value calculations and condensation analysis. 3D U-value calculations completed in line with BS EN 10211 are used for rainscreen projects because they are the most accurate way to ensure a building’s thermal performance matches the initial design. The Technical Support Team provided a fast turnaround on the enquiry and recommended 100mm Rocksilk® RainScreen Slab as the best solution for the project.Manufactured from Rock Mineral Wool, Rocksilk® RainScreen Slab is non-combustible with the best possible Euroclass A1 reaction to fire classification. This means it will not contribute to the development or spread of fire should it occur. As well as having a British Board of Agrément (BBA) certificate for high rise residential applications, it also has a BBA certificate for use behind masonry façades – making it suitable for the different applications on The Malthouse.In addition to fire safety and thermal performance, Rocksilk® RainScreen Slab offers excellent sound reduction characteristics.More than 8,000m2 of Rocksilk® RainScreen Slab insulation was supplied to the development by builders’ merchants M Markovitz Ltd.Like all Knauf Insulation products, Rocksilk® RainScreen Slab has been designed for ease of installation. Improved robustness means it is easy to manoeuvre into place and it can be installed either way round without compromising performance.Rocksilk® RainScreen Slab is manufactured with ECOSE® Technology, Knauf Insulation's unique bio-based binder that contains no added formaldehyde or phenol. 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. ECOSE® Technology is also 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.Thanks to the technical support from Knauf Insulation, The Malthouse will deliver the students a comfortable, warm, quiet and safe environment where they can enjoy their university years.

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.

A 1950s house within a Victorian conservation zone has been cocooned in roof, floor and wall insulation and a contemporary outer shell to create a unique family home

When MCR Property Group purchased Unity Square in Liverpool, a £17m partially built student living scheme, it wanted to complete the project as quickly as possible.The specification required a non-combustible insulation solution that complied with building regulations for the acoustic insulation of internal walls and separating floors. The company needed a large quantity of insulation delivered within a very short lead time to coincide with the period when hired vehicles would be on site. With this in mind, Knauf Insulation suggested Rocksilk® Flexible Slab, its multi-purpose Rock Mineral Wool insulation.Designed for use in a wide variety of applications including internal walls, floors and partitions, and separating floors, and with excellent thermal performance, Rocksilk® Flexible Slab exceeded the specification requirements. Furthermore, Rocksilk® Flexible Slab has a non-combustible Euroclass A1 reaction to fire classification, making it suitable for internal use on residential dwelling buildings over 18m tall as outlined in the recent changes to Approved Document B.As well as thermal and fire performance, Rocksilk® Flexible Slab has excellent sound absorption properties, providing high levels of sound insulation. As a result, the installation of the product in the 204 bedrooms and 36 studio flats will make life much more comfortable for the students living on the campus.Rocksilk® Flexible Slab is manufactured with ECOSE® Technology, Knauf Insulation’s unique bio-based binder that contains no added formaldehyde or phenol. Products made with ECOSE® Technology generate low levels of dust and VOCs (volatile organic compounds) and have been awarded Eurofins Indoor Air Comfort (Gold) certification.Builders’ merchant, Selco Ardwick in Manchester, supplied Rocksilk® Flexible Slab direct to site. In total, 32 pallets were used, equating to nearly 3,500m2 of insulation.For ease of installation, Rocksilk® Flexible Slab features a flexible edge which is designed to optimise friction fitting between studs, joists and rafters. MCR Property Group team found that its flexible edge combined with its lightweight design made the product much easier to install than alternative Rock Mineral Wool insulation they had used previously.Thanks to Knauf Insulation’s speed of delivery, MCR Property Group was able to keep to a tight schedule that saw Unity Square open its doors in September in time for the start of the academic year. And while most of the students probably won’t give a second thought to the insulation, they will enjoy their safer, warmer and quieter new homes!

The Vaughan Way development in Leicester features state-of-the-art apartments above a two storey car park. While this gives residents the best of both worlds – city living and parking in a limited footprint – it represents a challenge for developers in the form of thermal bridging.Most car parks feature open walls to allow adequate ventilation of exhaust fumes, so the separating floor must be well insulated to prevent warm air from the flats escaping into the car park below. With this in mind, main contractor Winvic approached Knauf Insulation for advice on the best insulation to specify in order to achieve the specified U-value of 0.2 W/m²K.Knauf Insulation’s Technical Support Team conducted U-value calculations to determine the thickness of Soffit Linerboard required. They then worked closely with Winvic to provide technical advice to ensure all design considerations were addressed.Soffit Linerboard is a robust Rock Mineral Wool slab. It is a high-performance thermal insulation and offers excellent sound absorption to provide high levels of sound reduction; something residents will appreciate when their neighbours are parking below.Soffit Linerboard is also non-combustible, with an A1 Euroclass Reaction to Fire Classification, essential to comply with changes to the building regulations, as Vaughan Way will be more than 18m tall when complete.Soffit Linerboard is one of more than 40 Rock Mineral Wool insulation products produced at Knauf Insulation’s Queensferry plant. 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 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.The insulation was delivered direct to site by distributors Encon in Nottingham and was installed by sub-contractors L Reynolds.From the additional warmth, to noise reduction and improved safety, adding Soffit Linerboard to the separating floor between the car park and flats will make city living even more pleasant for the residents of Vaughan Way.

ChallengeThe much acclaimed architect Zaha Hadid created the design for the Riverside Museum, which has already been dubbed ‘Glasgow’s Guggenheim’.The new riverside Museum provides an exciting new home for Glasgow’s transport collection. The development has a riverside location on a site where the River Clyde meets Glasgow’s other main river the Kelvin, and is adjacent to Glasgow Harbour.The dynamic new Riverside Museum displays Glasgow’s rich industrial heritage, which stems from the River Clyde. The Tall Ship is berthed alongside the Museum, creating a fantastic experience in this stunning setting.The brief for design and build roofing specialist Varla (UK) Limited was to find a flexible insulation that could meet the demanding U - value of 0.20 W/m2K that was continuous over both the walls and the complex 18,000 square metre roof. The Glasgow Museum of Transport is a complex, heavily engineered design and was the first major UK project for the renowned architect Zaha Hadid.Specialist Roofing contractor, Varla (UK) Limited started the search for a suitable material by contacting many insulation suppliers and holding supplier seminars at Varla’s Chester offices, challenging suppliers to propose a solution to meet the demanding specification for this unique project.SolutionVarla (UK) Limited chose to use Knauf Insulation’s FactoryClad Roll 32, a flexible insulation that meets the demanding U-value of 0.20 W/m2K across both the roof and walls.Rigid foam boards were ruled out early on, as they could not be fitted to the building’s complex curves. There was also a limited cladding zone that could not be altered. Many types of insulation were considered, but glass mineral wool roll provided the best thermal efficiency. The key to Knauf Insulation’s products being specified on this project was its ability to provide in-depth technical support, including complex three-dimensional heat flow modelling calculations. This allowed Knauf Insulation to produce a solution that met all of Varla’s insulation requirements by using a double layer of 100mm Knauf Insulation FactoryClad Roll 32. This is a flexible, lightweight roll of resilient Glass Mineral Wool with exceptionally high tear strength and a thermal conductivity of just 0.032 W/mK.In addition, Knauf Insulation FactoryClad Roll 32 is ideal for limiting the spread of fire since it holds a Euroclass A1 reaction to fire classification for non-combustibility and will not burn. Nor will it give off toxic smoke or suddenly ignite in a fire due to ‘flashover’. For public buildings such as this, superior fire performance is crucial.Once Varla (UK) Limited had decided on Knauf Insulation, it leaned on them heavily for technical support, utilising the unique 3D heat loss calculation support service, which ensured the correct product thickness was specified to meet the demanding project requirements.

ChallengeTargeted with achieving a minimum BREEAM rating of Excellent and with only a short window of time to complete the project, Associated Architects, who designed the building, needed insulation products that would meet strict thermal and environmental requirements – as well as a manufacturer that could offer quick turnaround times and a high level of technical support.SolutionWith the help of Knauf Insulation specification manager, Marc Lawson, a through wall solution using 5,000m² of Knauf Insulation’s 100mm Rocksilk® RainScreen Slab – a rock mineral wool slab containing a water repellent additive, specifically designed for rainscreen cladding systems was used. It is quick and easy to install and is simple to cut and fit around brackets. The slabs knit together with no need to tape the joints – ensuring maximum acoustic and thermal performance, with no air gaps. Knauf Insulation’s Rocksilk® RainScreen Slab is also non-combustible and has the highest Euroclass A1 reaction to fire classification, as well as excellent sound absorption performance.To further enhance the thermal properties of the element, 10,500m² of Knauf Insulation’s Rocksilk® Flexible Slab 100mm, was installed in two layers within the SFS system. Designed to friction fit between metal studs, rafters and joists, Rocksilk® Flexible Slab is a multi-purpose rock mineral wool insulation slab, which provides excellent thermal and acoustic performance.Chris Kinman, Senior Design Manager at Willmott Dixon commented; “Knauf Insulation’s products are easy to handle and cut which makes them very easy to use on site. The first phase of the project has gone well, and the architect has adopted a similar approach to Phase 2 - which is testament to the excellent performance so far. Overall, we have been very impressed by the help and support we have received from Knauf Insulation on the project, and we have since recommended them to other colleagues."Rocksilk® RainScreen Slab and Rocksilk® Flexible Slab rock mineral wool products are made with ECOSE® Technology, a formaldehyde-free binder derived from rapidly renewable materials, instead of traditional petro-based chemicals used in other insulation. Additionally, ECOSE® Technology is up to 70% less energy intensive than traditional binders.

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.

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.