"roof forms"

Perry Hall Academy, a large primary school built in 1949, with original waterproofing still in-situ. IKO assisted the Academy funding bid by providing a detailed survey report, including intrusive core sample analysis. The roofs were suffering from water ingress, cracks in the mastic asphalt, pooled water and poor heat retention, so decision was made to replace the roofs throughout. New rooflights were also specified to allow more natural light in while the design chosen reduced the external noise transmission. IKO worked with specifier Concept Education Services to deliver the project (some work during term-time) within 6 months.

Bespoke Sliding Over Roof Rooflight For Concrete Frame House Building Case Study

Furnitubes designed and manufactured a number of AKRI retaining steel wall planters with ped and tray system for rooftop scheme in in Bexleyheath, south London. AKRI’s unique ped and tray system allows the planters to be left freestanding, sitting on a layer of waterproof membrane. Decking and pergolas were installed and benches were later retro-fitted to the planters to seamlessly integrate seating, manufactured in all steel to accommodate the required A fire rating, creating stunning landscaped roof tops across both buildings in the heart of a bustling city.

In less than four months, SIG Design & Technology, IKO Polymeric and FK Group have completed a 48,000m2 roofing project for one of the biggest online grocery centres in the world. An incredibly tight programme minimised material waste and time on site, thanks to a number of innovations developed specifically for the project by the three businesses working collaboratively.

Westerland and Moorland, BBA certified fibre cement slates from Cembrit, have helped achieve a Code for Sustainable Homes and a BREEAM ‘Very Good’ rating for a newly built £30 million retirement village in Oxfordshire.Built by BAM Construct UK and due for completion in December 2016, the project is built in an attractive, traditional style which is complemented by Cembrit’s Westerland and Moorland slates. Based in Hertfordshire, BAM Construct UK worked with roofing specialist Attleys Roofing Ltd on the project.

Glasgow’s latest redevelopment project, located on Langside Road, is built upon the former site of the city’s Victoria Infirmary and consists of a large housing development that includes 413 flats, offices and retail space. The 3.75 hectare site, which is situated next to Queen’s Park on the south side of the city, forms an important part of the Battlefield area’s character, with the buildings’ exterior reflecting and complementing the surrounding heritage by using the city's traditional blonde coloured sandstone.  As part of the construction process, Bilco UK was commissioned to supply six ESW-50REM Smoke Vents, in addition to seven E-50TB Roof Access Hatches, to provide the highest standards of safety and efficiency, whilst being sympathetic to the project’s overall design.  Installed onto the roof areas of four blocks of flats by Scottish contractors, Procladd Small Works Ltd, Bilco UK’s ESW-50REM Smoke Vents were specified to provide essential ventilation in the event of a building fire. Featuring a linear actuator operating mechanism that opens the cover to 140 degrees within 60 seconds, the smoke vents ensure compliance with Building Regulations Approved Document B, BS9999 and EN12101-2.  The built-in wind deflector also provides protection against smoke being blown back into the vent in the event of a fire., whilst the newly-designed closed-cell EPDM sponge gasket helps meet Building Regulation air leakage targets by providing a better seal of the cover to the curb. With the addition of a fixed vertical ladder, the smoke vents can also be used by maintenance engineers for roof access.  Billy Baillie, Managing Director at Procladd Small Works Ltd, said: “We have a longstanding relationship of over 20 years with Bilco UK, and will continue to do so over the forthcoming years, due to their impressive product quality and outstanding service. Bilco UK’s Roof Access Hatches and Smoke Vents were incredibly easy to install, and knowing they’re engineered to meet the highest industry standards, it provided both ourselves and the client with the confidence that the installation would set the standard for performance and longevity.” Constructed with corrosion-resistant materials, Bilco UK’s E-50TB Roof Access Hatches were also installed to provide engineers with safe, regular and convenient access to the roof to conduct essential maintenance. Engineered with compression spring operators to provide easy one-hand operation, the roof access hatch meets the requirements of Manual Handling Regulations, whilst the automatic hold-open arm locks the cover in the open position to ensure safe egress. The overlapping cover design, fully welded corners and insulated cover also ensure weathertightness and energy efficiency to deliver the highest standards of resilience. Mark Baird, Sales Operations Manager at Bilco UK, said: “Drawing on our longstanding relationship with Procladd Small Works Ltd, it was fantastic to work together on this project, which has been designed to positively impact the city’s culture. The products installed were manufactured with fire safety and efficiency in mind, delivering assurance of the durability and suitability of the installation for years to come.”For further information on Bilco UK’s complete range of roof access solutions, visit www.bilcouk.co.uk or call 01284 701696. 

D-marc 105TM demarcation system – a collective protection demarcation solution. The doctrine “prevention is better than cure” is one that rings true in so many instances. Common sense tells us that it much better to prevent a fall than it is to arrest the fall once it has occurred. The Working at Height Regulations (WAHR’s) 2005 reinforce this argument. Whilst in many instances it is not always practical to remove the risk of a fall; rainwater outlets will always require cleaning, rooftop plant will require regular maintenance etc.. there are a number of ways to protect the worker from the immediate hazard the fall presents. The simplest way and that which much closely echo’s the doctrine “prevention is better than cure” is to keep the worker away from the fall hazard. The most effective way of achieving this and that which is advocated by the WAHR’s is through the provision of a Collective Protection solution. A collective protection solution is one which will “collectively protect all those who access the area”. In a rooftop situation where the hazard is a fall from the roof edge, Collective protection can be achieved by raising the parapet or through the installation of a full perimeter guardrail. Alternatively the worker can be kept a safe distance from the roof edge through the installation of a demarcation system. –Health and Safety in Roofwork HSG 33 states that “where work is not done at the edge, demarcation barriers can be provided at a safe distance from the edge (usually at least 2 meters), e.g. work on an air conditioning unit in the middle of a roof.”.      An example of where The D-marc demarcation system has recently been specified and installed at Crown Woods College, Eltham to provide safe access to rooftop mounted plant. The client was looking for a solution that would;Provide a collective protection solutionNot penetrate the existing roof covering and therefore not compromise the roofs waterproofing or air-tightness.Be lightweight so as not to require an additional support structure.Provide easily identifiable access routes ensuring no exposure to fall hazardsBe low maintenance and ideally have good environmental credentials.  D-marc was able to meet all these criteria and has the additional benefit of giving the customer the piece of mind that whilst it does not rely upon any means of mechanical fixing to the roof structure, it is tested to withstand wind speeds in excess of 105 mph. Such testing is a requirement of BS6399-2 Code of Practice for Wind loads which states that all components that form a building are required to withstand a 1 in 50 year wind speed.   D-marc was used extensively on the project as part of the collective protection demarcation system to create clearly defined safe access routes across the roof to theplaces requiring regular maintenance work. Having created the safe routes to the places of work, the D-marc was then used to demarcate the safe working zones upon the roof top. To ensure a complete collective protection solution was provided in isolated areas where it was not possible to keep the worker away from the fall hazard a guardrail was used. The easy to install, non penetrating D-marc system creates a clearlydefined access route and a safe working zone for all those undertaking regular rooftop maintenance works.

Hush Acoustics provided an effective solution to ‘noise break-in’ at a newly built primary school in Chester to ensure the internal acoustic environment was supportive of learning goals.The Huntington Primary school was designed by Cheshire West and Chester Council to cater for 420 primary age pupils and a 26-provision nursery. The former primary schools it replaced had a capacity of 120 children, but to cope with the demand of 1,200 new houses being built nearby on the former Saighton Army camp, the decision was made to build a new school to meet the requirements.An acoustic concern highlighted was ‘noise break in’ which is caused by issues such as the sound of rain falling onto the roof, which in turn would detract from the learning environment. In order to resolve this potential issue and to guarantee the children a healthy setting free from noise disturbance, we specified our Hush 10kg Barrier Mat to be installed in the roof of the building.Hush Barrier Mat is a vinyl sound barrier mat loaded with naturally occurring minerals. The product is free of lead, unrefined aromatic oils and bitumen. Designed to improve the sound insulation of existing panels of metal, wood, plastic etc., at all frequencies. The mat is normally fixed in intimate contact with the original panel. Hush barriers are particularly effective in overcoming coincidence dip resonance found in stiff lightweight composites such as plywood sheets and hollow core panels.Working alongside Kier, were Delta Group, who we supplied with 1100 sheets of our Hush 10 kg Barrier Mat. They then applied this to the roof of the school in 3x layers, to give a mass of 30 kg/m2 and improving acoustic performance across all frequencies.

Abingdon School, located in Oxfordshire, commissioned Hopkins Architects to design a new science building in 2008. The building was to replace the outdated facilities and provide modern teaching and research spaces for the school’s science departments. The resulting design is a striking and dynamic building with a distinctive form created by a series of angled, sloping roofs that follow the natural contours of the site.Hopkins Architects chose to clad the building in Michelmersh’s Hampshire Stock Downs blend. Its soft red tones ingratiate itself with the local vernacular while also being easy to maintain and ensuring long-term durability.The Abingdon School Science Building by Hopkins Architects has been a great success, providing modern and flexible teaching and research spaces that are highly valued by students and staff. The building’s innovative design and sustainable features have won numerous awards, including a RIBA Award and a BREEAM Excellent rating. The building seamlessly integrates into its historic surroundings, enhancing the school’s facilities and reducing its environmental impact.

This stunning self build property delivered the dream home for our client. The vision of completely open plan areas, stunning vaulted ceiling spaces and stairwells made SIPs an obvious choice. The vaulted ceilings were formed with precision during the SIPs design stages and this complex roof them installed to exacting precision on site ensured the clients precise vision could be delivered.The specification of the 172mm SIPs panel ensured that U Values a low as 0.15 were achieved straight off the shelf which also delivered on the thermal, environmental and sustainability requirements requested by the client.This stunning property has endless features and is an aesthetic master piece, all of which was delivered through detailed design, engineering and installation by SIP Build UK as the appointed SIPs specialist.SIP Build UK took complete responsibility for the design, engineering and installation of the SIPs including all internal walls, floors and the huge amounts of additional structure in both glulam and steel to deliver this open plan, vaulted, stunning property.

The Trinity Mews project is a residential property in Stepney, in the East-end of London. As a remediation project, the building already featured a roof terrace in disrepair that needed to be replaced. Originally fitted with timber, the wood had begun to rot away. The system used - TerraSmart AluminiumThis is a non-combustible decking system designed for use on terraces or waterproof substrates. The RDFR pedestals, with base rubber shock pads and ADS25 joists, formed the system substructure of the remediated terrace. The finish was made using ADB-60 aluminium decking boards in Anthracite Grey. The TerraSmart Aluminum system is IGNO certified meaning it satisfied the requirement to be A2 s1 d0 fire classified.Further improving on the timber deck it replaced, the system had to be durable and slip-resistant. As ADB boards are classified as a "low slip risk" on wet and dry and see no signs of wear after 100,000 footfalls, they comfortably met both sets of criteria.Location: StepneyCompleted: 2021Client: A property management company

Truss roof rafters and ceiling joists are typically spaced either 400mm, 450mm or 600mm apart. Given that the joist is normally 50mm wide, this gives a fairly small opening width for your loft hatch and ladder. However, there are still a wide variety of options to consider. For example, space saving concertina loft ladders, are easy to operate, providing robust and durable access to an attic. Made-to-measure folding wooden loft ladders, such as the new Quadro, are available for widths of 550mm and offer minimal protrusion in the loft space above. Visit our website for more information.

This is a metal roof coating & refurbishment project using Liquasil's BBA Approved Metalseal 20. The project involved removing an existing cut edge corrosion treatment and re-treating with Liquasil SWT Corrosion Primer, followed by two coats of Metalseal. The whole roof was then coated with Metalseal 20 to provide long term protection against fungal growth and weathering. The unique 10 year, single-point latent defects insurance guarantee was issued at the end of the project. For details, speak to our building surveyors on 0121 709 5352

When Make Architects needed a waterproofing solution for their latest project in the City of London they turned to IKO PermaTEC hot melt. Waterproofing such an expansive and complex roof has its particular challenges and required robust and reliable detailing. The choice of waterproofing was to perform for a minimum of 30 years, be cost effective and also contribute towards the building’s design stage BREEAM Excellent rating.

The Host Helix building, also known as the “Helter-Skelter,” was a unique and striking structure built in 2011 with stunning views of North London and Wembley Stadium. Over time, the building experienced general wear and tear and water began to enter the buildings’ complex structure.Polyroof Products were called in to consult with the clients and offer a seamless, encapsulated solution that could address the many unusual details associated with the building’s design.The SolutionA full survey of the roof terrace areas was conducted by the Polyroof Technical Services, after which a bespoke specification was produced for the works. The proposal document detailed a comprehensive set of recommendations for producing a seamless solution to encapsulate the problematic roof, therefore solving the issues that had arisen over the years due to its condition and age, as well as the issues associated with the original design of the pitched, curved roof.Polyroof SA Carrier Layer was then applied over the cement particle boards with Polyroof pre-formed GRP Drip Trims fixed to the external edge. For continuity and to create a uniform finish, the SA Carrier Layer was extended onto the main roof sections as a substrate for the Protec system.Any details requiring local reinforcement were treated with Protec Resin and 75mm wide Polymat 450. The curing process was allowed to take place. To accommodate structural expansion / contraction movements at appropriate details, 25mm disbondment tape was installed prior to local reinforcements.The first coat of Protec Resin and Polymat 450 was applied at a minimum coverage rate of 1.3 – 1.5Litres/m² (0.66 – 0.77m²/Litre) and was allowed to cure. To complete the system, a second coat of Protec Resin was applied at a minimum coverage rate of 0.5Litres/m² (2.0m²/Litre) and was allowed to cure.ComplexitySuch an iconic building in the local community, the client wanted to protect the original aspects of the building to the fullest extent, so the Protec system installed at the perimeter was color-matched to the original blue and grey colours. This was achieved by blending pigments until they matched the desired colors, in turn the pigment was then blended into the Protec resin before application. The survey revealed concerns about the original building designs from 2011 and the roof’s drainage system. Due to the roof’s pitch, rainwater was cascading down the curved slopes at high velocity and causing water to bounce into the building under the original capping.After many discussions between the main contractor and Polyroof, as well as the provider of the external cladding, it was agreed that the perimeter detail needed to be encapsulated with the new waterproofing system to prevent further water ingress. Fire-retardant cement particle boards were fixed to the internal and top faces of the external parapet walls, and the Polyroof SA Carrier Layer was applied over them with Polyroof pre-formed GRP Drip Trims fixed to the external edge.The Protec System was then applied to encapsulate the entire parapet detail, meaning its waterproof integrity would be covered under the Polyroof Guarantee. The curvature of the building added complexity to this process, and the contractor took great care in cutting the trims to size and fixing them to the external edge to ensure they followed the profile of the structure. Due to the building’s height, all the trims were face-fixed to prevent wind uplift.WorkmanshipIn order to improve drainage and prevent water from accumulating in hotspot areas of the roof, the contractors were instructed to install new internal curved gutter channels at the point where the roof and building met. These channels were designed to have a sufficient height and angle to effectively direct rainwater towards the outlets, preventing water from pooling on the roof. However, the installation process was made more complex due to the curved nature of the building’s architecture, which required careful measurement and customization of the gutter channels to fit the unique shape of the building.Additionally, the contractors had to consider the many joins of the gutters and how they would hold up to the elements over time as the building structure expands, contracts and moves. Extra steps were taken to ensure the gutters liquid membrane was properly sealed and secured to prevent leaks.The contractors were instructed to repair all protrusion and mansafe post details as necessary in order to allow the Protec System to be installed to a minimum height of 150mm, and to terminate it underneath a suitable weathering flange or jubilee clip. In addition, all right angles were to be reinforced with double taping. Any protrusions that were liable to significant movement was required to have disbondment i.e., bond break, tape applied to it to stop the external coating from stressing on expansion. Furthermore, all pipes were to be abraded, solvent wiped, and where necessary, primed in accordance with the Polyroof coatings manual. A flashing detail was also to be created with a weathering flange or seal.All outlets were inspected to ensure that they were functioning properly. Any outlets that were deemed unsuitable were replaced with new ones. The outlets were cleaned, prepared, and primed as necessary. The Protec system was then dressed into the outlets as far as was practical. The inspection and replacement of the outlets and the preparation of the Protec system helped to ensure that the drainage system functioned effectively.ConclusionThe refurbishment of the roof was completed within the client’s target timeframe and budget. Following a final inspection by Polyroof Technical Services, which highlighted quality workmanship of Tower Asphalt Ltd, the client received Polyroof’s trusted Accredited System Guarantee and now has the peace of mind the roof will be leak-free for decades to come.

The new flagship outlet of Pioneer Foodstore in Carlisle was built to a high specification with the aim of significantly extending their client base. The planning application had to meet the requirement for a screen to conceal the roof-top services and air-conditioning plant.Italia-80V was proposed, which could be bent to a radius, to fulfill the vision for a semi-circular end to one side of the compound. The 2950mm high steel louvre panels were welded onto appropriately shaped RSA support rails at top and bottom, which were supplied with multiple holes for fixing to the posts to ensure perfect continuity of spacing. A double-leaf gate was also seamlessly incorporated by using a front fixing design.Lang+Fulton worked closely with the architect at an early stage to advise on the fixing points for the posts which would carry the screen. This ensured that the thermal barrier and waterproof membrane could be wrapped up the footings for a neat and effective installation.

Hydrostop AH-25 liquid roofing was chosen as a better alternative to built-up roofing for installation to a new build Surrey County Council office development. The Hydrostop AH-25 system was applied over a concrete substrate with a bituminous vapour control layer with Eurodeck liquid roofing board and cut to falls insulation.

We delve into Anna's inspiring rooflight replacement journey in her Hertfordshire home with a Vario by VELUX custom-made roof window. This stunning addition has wholly transformed her living space.At Vario by VELUX, we understand the importance of custom-made solutions to suit your unique needs, and our bespoke flat roof windows are designed to do just that. Anna's story is a testament to how our Vario by VELUX Rooflights can create a space filled with daylight, enhancing ambience and interior design.Custom Made Roof Window CollaborationAnna, who hails from South Africa and relocated to the UK almost 40 years ago, recognises the importance of natural light and how it can significantly impact your well-being. Having lived in her Hertfordshire home for many years, she knew it was time to replace her existing lantern rooflight due to a leak and a desire for a more modern design.When she reached out to her architect for guidance, he recommended Vario by VELUX, a decision that proved to be a game-changer for her home. Our team worked closely with Anna, making the bespoke flat roof window fit around the structural beam and seamlessly integrated with her living space. The result was nothing short of beautiful, highlighting the exceptional craftsmanship, professionalism and flexibility Vario by VELUX is known for.What improvements have you seen between the old rooflight and the new one?“The design of the extension is better now than when we had the previous rooflight. The lantern that stood up always bothered my eye and now this flat roof is unobtrusive. When I look out of my windows upstairs I don't see anything, I just see the garden, it’s just opened up another dimension.Another thing is the rain, the sound is different - it’s softer and I like the pool of water you can see lying on it - the different little patterns. It’s a wonderful sound and view so I really recommend it.”The Impact of Unlimited Daylight on Your HomeWith the Vario Unlimited Rooflight installed, Anna's living space now basks in abundant natural light. This daylight not only brightens up the room but also enhances the overall interior design. Even on cloudy days, the room remains well-illuminated, reducing the need for artificial lighting. The difference is undeniable, and Anna couldn't be happier with the transformation, stating, “I had such a good experience, everything was done so professionally… the end product is beautiful.”Advantages of Flat Roof Windows Over Lantern Roof DesignsWhen considering the choice between a flat roof window, like Vario Roof lights, and a lantern roof design, it's essential to highlight the benefits that make the former stand out:Unobstructed Views: Unlike traditional lantern-style skylights, flat roof windows can offer a more discreet and clean design that blends seamlessly with the roof. This design allows unrestricted views of surroundings, creating a more open and expansive feeling within a space. Lanterns can provide a beautiful and artistic effect by breaking up the daylight with the lantern intersections.Balancing Cost and Style in Skylights: Choosing between flat glass rooflights and lantern skylights isn't just about style but also cost. Flat glass rooflights are a bit friendlier on your wallet and can even help lower your heating bills, thanks to their excellent insulation. But don't let that sway you if your heart is set on a lantern skylight! They might require more time and expertise to install, but the result could be well worth it. Ultimately, the choice is yours - both options bring daylight and elegance.Ventilation: Vario flat rooflights are designed to maximise airflow thanks to our upstand, contributing to a well-ventilated and fresh interior space. Lantern roof lights, on the other hand, excel in aesthetics, adding a distinct charm to any room. However, their ventilation efficiency may not be as high as that of flat roof windows. Both options present a blend of form and functionality to consider.Insulation Differences: Lantern skylights and flat roof windows both provide insulation but to varying degrees. Lanterns with multiple glazing pane joints tend to have poorer insulation, leading to more heat loss. Conversely, flat roof windows, with fewer connections, generally offer superior insulation.There are certainly pros and cons to both types of rooflight design. What matters most is that you are considering adding more daylight into your your designs!Experience the ‘Wow Factor’ With a Bespoke Roof WindowAnna's advice when considering a renovation is crystal clear: "I really don’t think you can do an extension without a rooflight." She believes it's essential for well-being and making your space more enjoyable. A rooflight adds the "wow factor" that can genuinely make your life better.Incorporating a Vario skylight into your project can be a game-changer, just as it was for Anna.

Architect: Scenario Architecture. This beautiful Victorian villa received an innovative green-roofed extension full of natural light thanks to IDSystems installed bifold doors, gable end glazing, rooflights, window and door. The challenge for Scenario Architecture was to design an extension that was filled full of natural light, took into account the changing floor levels of the property. Under the pitched roof, the gable end glazing has been designed to perfectly match the profiles of the SUNFLEX SF75 bifold doors, whilst the inclusion of a single access door allows the extension to angle away to create a larger kitchen/dining area.

Editorial on dry fix roofing and the factors to consider when making a product choice.

Project: Creative Centre, York St John UniversityClient: Tate+Co ArchitectsScope of project: Design and supply 24 bespoke-sized rooflights for the roof of a triple-height atrium to fit within apertures in a glulam timber grid.Products: 24 bespoke sized em.glaze rooflights, some with concealed actuator smoke ventsThe ChallengeThe roof of the striking 14m, triple-height atrium, which forms the centrepiece of the newly opened Creative Centre at York St John University, features a glulam timber roof grid. Architects Tate+Co wanted to punctuate that grid with bespoke sized rooflights to bring even more light into a space which is used as an exhibition, teaching and theatre space, as well as somewhere for students to mix and relax. The rooflights had to have a sleek, minimalist aesthetic, in line with the overall design intent of the atrium and, because almost all the services in the atrium are hidden, needed to be available with matching concealed actuator smoke vents.The SolutionWhitesales designed and supplied 24 bespoke-sized em.glaze rooflights which suited the specification perfectly. The flush-glazed glass-to-edge design of the em.glaze units with flat sealed glass units fitted within a fully welded, thermally broken aluminium frame achieved the lean, crisp look the architects were looking for. The fact that they were also available with fully concealed actuators in the smoke vents supplied by our affiliate business Sertus was an added bonus. All the rooflights were supplied for the project complete with preformed 300mm PVC splayed upstands, which enabled them to be fitted directly into the glulam grid, saving the contractors time on site. They were also fitted with specially coated glazing which allowed for a degree of solar gain and contributing to the low energy requirements of the BREEAM Excellent rated building.‍The BenefitsAs well as the meeting the design specification, Whitesales’ technical team helped to ensure that the em.glaze rooflights could be installed quickly and efficiently by the main contractors Kier Construction. We estimate that our recommendation to supply the units with preformed 300mm PVC splayed upstands saved the roofing team at least two weeks on site because they didn’t have to construct the upstands themselves and the integrated splay made waterproofing the roof a lot easier. Tate+Co Director Andy Baker-Falkner is delighted with the em.glaze units: “We liked the lean, crisp design of the Whitesales em.glaze units, particularly with the clean white reveal and option for fully concealed vent actuators.”

Project: Surespan designed and manufactured these huge electrically operated sliding glazed roof hatches also provide free airflow of 7m² for smoke ventilation!These bespoke designs were part of a redevelopment on Great Portland Street in London. The covers were 4610 x 1955mm and featured an electrically driven opening motor.Product:The covers provide 7m² free airflow (As it is sliding there are no obstructions to the ventilation) according to approved document B (fire safety) paragraph 5b diagrams C.7.The glazing features laminated and heat-strengthened low iron glass to L40.A further fixed rooflight was also supplied to the size of 4935mm x 1955mm, the thermally broken multi-pane rooflight provides natural daylight

SubFloor Outdoor Flooring was used to help renovate and raise a 650 m² roof into an outdoor terrace in Västerås, Sweden.This was built on top of the existing roof felt and used high-quality pressure impregnated wooden joists to create an even surface, level with the rest of the building. The joist and screw system allows for quick and easy assembly so that the floor can reach the desired height.Products:Pre-treated Wooden Joist 45x70x3600 mmSubFloor Screw 300 mmSubFloor Screw FootHeight Variation: 90 - 339 mmJoist separation: c/c 300 mmSystem Weight - c/c 300 mm: 10.72 kg/m²Materials:Pine T0-C24Fibre-reinforced polypropylenePolyamidePoint Load Limit (50 x 50 mm):Load next to screw over joist edge - 21.74 kNLoad between screws over joist edge - 16.43 kN

No timber was allowed as part of the new refurb to conform to FM Global (Airbus Insurers) regarding system fire rating. IKO recommended an overlay on the existing deck, which complied with all the latest British Standards and Regulations. IKO Mach One System was chosen as it provided a flame-free System. Where detailing was difficult IKO Polimar EC/UV System was used. The roof refurbishment also included the installation of smoke vents, associated smoke control panels and accessories.

An office building in Manchester has a large roof terrace area that was incorporated into the building wide refurbishment. They wanted to increase the usability to the terrace by adding outdoor furniture to encourage employees to use the space for interacting and getting fresh air. The Parallel42 benches were chosen due to their flexibility and contemporary look which would complement the terrace space and provide ample seating. The Benches were installed free standing for ease of positioning and can be rearranged as required. EY now has a usable terrace area that is enjoyed by many of the company’s employees.

Our coatings look after the world’s most iconic and acclaimed buildings. Among them is the Auckland Art Gallery Toi o Tāmaki. Since its redevelopment in 2011, the principal public gallery in Auckland, New Zealand has won 23 awards and counting, including the prestigious World Architecture Festival's 2013 World Building of the Year. The redevelopment plan aimed at restoring and preserving heritage elements and sensitively combining them with 21st-century design. This included earthquake-proofing and heritage restoration of the 1887 and 1916 components of the main building and the addition of new, contemporary elements that increased display space by 50 per cent. One of the most distinctive features of the new building is its roof design, which forms a series of fine ‘tree-like’ canopies that define and cover the forecourt, atrium and gallery areas.Our coatings complemented this architectural challenge of blending old with new. A coatings system comprising of Interzinc 42, Intergard 251 and Interthane 990 was used to protect structural steel, while Interchar 963 was used to provide essential protection from the effects of fire.

Initial project meetings first started in early 2008, the clients owned a small cottage on the site which had been extended several times during the 80’s and had permission to make further adaptations. The mixture of building standards meant that their home was extremely drafty and very energy inefficient. The site itself is particularly exposed. The design which achieved planning permission was a crescent form which steps and slides into the slopes on the site. The crescent formation is in direct response to solar orientation.The brief was to design a building which would accommodate the family for many years into the future, the planned occupancy would be for 5 adults. Additionally, the home will be used for large family occasions. A requirement was set for a minimum 16 seated spaces to be available for dining during these family occasions.Op-Deck was added into the scheme very early into the design process as the way of creating the highly insulated structural floor as the house was being designed under Passivhaus standards. The overall U-value of the property is 0.1w/m2K as standard. The system was installed on the lower and ground floors and also the roof.

Penrhyn Heather Blue slates from Welsh Slate feature on Lincoln’s Inn’s Great Hall. One of London’s most unique buildings is enjoying a new lease of life, thanks to Welsh Slate. The Great Hall and Library Buildings of The Honourable Society of Lincoln’s Inn, an association of students, barristers and judges and one of the four Inns of Court, have over the past two years undergone an extensive programme of external conservation carried out by expert stone masons Capital Stone.  The programme of work includes replacement of the Great Hall’s slate roof covering. Work is still ongoing, with anticipated overall completion in April/May this year, but the work to the Great Hall roof is complete, as is the striking of the temporary roof covering which brings the new roof into view.  The Great Hall and Library Buildings were constructed from 1843 to 1845. The Great Hall roof was originally covered with lead but was recovered in 1868 with slate. From 1871 to 1873 the Library was extended eastwards by three bays. The building is an important example of 19th Century Gothic Revival architecture and has been listed Grade II* since 1951.  After 154 years, the slates on the roof of the Great Hall required replacing to protect the interior, including a striking fresco and beautifully worked oak. The slates were suffering from surface delamination and a large proportion had slipped due to nail rot, requiring tingles to hold them in place. The existing slates were found to originate from both the Ordovician and Cambrian deposits of North Wales – the former predominately on the eastern elevation and the latter on the western. The large Ordovician slates, typically 850mm long and between 350mm and 500mm wide (and laid to a fixed gauge of approximately 350mm which equates to a head lap of approximately 100mm), originated from what is now Welsh Slate’s Ffestiniog quarry, which is currently mothballed, while the other quarries producing these no longer operate. The Cambrian slates from the Llanberis region, as well as Bethesda where Welsh Slate’s main quarry is based, were even larger, at 850mm long and wider than 450mm, laid to the same gauge. Both slate types were fixed to timber battens on open timber rafters, with the underside torched with horsehair and lime plaster. These were replaced for the closest Welsh slate match – Welsh Slate’s County-grade Penrhyn Heather Blues, at 800mm long, widths of between 400mm and 550mm, and a 350mm gauge and 100mm head lap. These are guaranteed for 100 years, with a useful life of 150 years. While the roof is generally simple in form, with two large slopes, its substantial size at circa 800m2 meant the work took considerable time to complete. To allow for more than a dozen dormers the Welsh Slate had to be cut and fitted to size with double copper clout nails. The thickest slates were used on the eaves, diminishing towards the ridge to maintain the original visual finish. They were also holed from the rear to provide a slight countersink to the face. The Great Hall operates by day as a dining hall for members of the Inn, and by night, as a venue for dinners, receptions and weddings for up to 400 people. Set in 11 acres of beautiful grounds in Holborn, Central London, it is the closest Inn to the Royal Courts of Justice. Henry Skinner, Head of Projects and Facilities Management at The Honourable Society of Lincoln’s Inn, said: “The replacement of the roof covering was far from straightforward, despite its externally simplistic construction. During stripping of the existing roof covering, we had to deal with atmospheric lead contamination of a horsehair felt that sat between the original slates and close boarding, requiring controlled measures of removal and disposal.  “Furthermore, the close boarding had warped over time, causing an undulation between roof trusses that needed to be spaced out. This was achieved through the introduction of additional battens and packing timbers to create a level surface onto which the new slate could be laid.” Casey Wickers, trainee quantity surveyor with Capital Stone Renovation, said: “The main work of stripping the existing roof was extremely challenging and labour intensive, to not only remove, wash and handle each slate manually through a tight scaffolding design, but also doing so whilst wearing full RPE due to the lead contamination. “With the two stunning roof facades in full view, the quality of the Welsh slates can be seen by all.

The Polden tile has been used on various sites in Scotland as a slate solution. With its riven finish and mock bond the tile gives a true natural look but still has all of the benefits of a concrete interlocking tile.

Armourplan PVC and Recticel Insulation by SIG Design Technology were selected for a 12,000 m2 roof to a bottling plant in a rural location on the outskirts of an historical Derbyshire spa town, known as Project Merlin. The FMCG company chose to build the new facility away from the site of the natural spring, piping the water some two miles out of town to this green field bottling and distribution site.

The former ToysRUs premises in Luton required complete refurbishment and part of the project involved renovation of the metal roof. Liquasil's BBA Approved Metalseal 20 system was specified because it includes the advanced, SWT Primer to treat cut edge and spot corrosion in-situ. The metal gutters were lined with Liquasil's Gutterseal, seamless liquid gutter lining system. Upon completion of the metal roof coating project, the unique, Liquasil Latent Defects Insurance Guarantee was issued. The Liquasil guarantee includes cover for Professional Design, meaning that you can specify Liquasil products with 100% confidence.

Sika Liquid Plastics has specified and supplied a roof upgrade solution for West Suffolk Hospital to renew the waterproofing membrane on multiple areas of the hospital campus and create a gradual pitch to aid drainage while enhancing the building’s thermal performance. Delivered by specialist contractor, Allard Construction, the phase four programme included seven sections of the building in a 20 week programme. The seven areas that needed work were all under heavy coverage of mechanical plant and pipework, and consequently there were large areas of restricted access, these issues made Sika Liquid Plastics the perfect choice for the project

Pinewood Studio in Cardiff may be the location where Dr Who regularly saves the Universe but there was no intergalactic crisis when the building’s 16,000m2 roof needed to be refurbished recently. Instead, Sika Liquid Plastics’ Sikalastic® 625 cold applied liquid membrane provided the ideal solution to protect the building from Wales’ famously wet climate while enabling a low key project that didn’t disrupt filming on the many Hollywood movies and acclaimed TV shows filmed there, which have included James Bond, Harry Potter and Sherlock. https://www.youtube.com/watch?v=ayB4ekA7FfM&feature=youtu.be

Sliding-Over Fixed Rooflight Maximises Light In Mansard Roof Extension Case Study