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Advertorial: Novia PART L: THE ROLE OF ROOFREFLEX The team at Novia explain how Aluthermo RoofReflex can solve construction issues associated with achieving U-values required under the changes Part L... In June 2022, Part L of the Building Regulations was updated to include revised U-values for new builds, refurbishments, and extensions. These updates are designed to improve the energy efficiency of buildings and reduce their carbon footprint. New Approved Document L (ADL 2021) which came into effect on 15th June 2022, gives technical guidance on how to meet the energy efficiency requirements contained in Part L of the Building Regulations. There are two parts to ADL 2021; Conservation of Fuel and Power, Volume 1 – Dwellings, and Conservation of Fuel and Power, volume 2 – Buildings Other Than Dwellings (ADL1 and ADL2 respectively). These documents set out the acceptable provisions for compliance with Building Regulations with regards to energy efficiency requirements. The new U-value requirements for the three building elements; roofs, walls, and floors, can be found in the table above. The most common way to improve on U-values is to increase the amount of, or change the type of, insulation. The ‘New Builds’ U-value requirement for roofs is particularly difficult to achieve at 0.11 W/m²K. To get to these low levels, typically two thicknesses of PIR insulation; 100mm and 75mm, are used between the truss, and 25mm below rafter for thermal bridging. Insulation distributors seldom stock PIR boards greater than 150mm thickness, hence the need for two separate boards between the rafters. The extra cutting on site and cost of multiple PIR insulation boards makes this a laboursome and expensive solution. Often, deeper trusses are used to accommodate more insulation. This has a knock-on effect whereby soffit depths must then be made deeper, as well as other building elements needing to change to fit with the new design. Above: Table shows the new U-value requirements for the three building elements. Other materials and technologies can be utilised to help bring down the U-value without having to move away from traditional building methods. Insulation over the rafter is one such solution. Additionally, the use of reflective membrane technology can help to lower U-values down by creating low emissivity cavities by reducing radiant heat transfer. Introducing Aluthermo RoofReflex RoofReflex is an insulated roof and wall underlay membrane that is both airtight and vapour open. It is fully compliant to BS EN 13859-1 and EN 13859- 2. It is CE approved as a breathable membrane and is EN 1928 W1 waterproof compliant. RoofReflex is normally used in conjunction with other standard insulation products to enhance the overall U-value of any installation. RoofReflex is a highly flexible product which can be used in a wide range of building designs to improve U-values by virtue of an integrated insulation layer laminated to a low emissivity surface. In certain configurations the overall thickness of both the insulation and the overall construction can be reduced. Unlike multifoil products which are used in the same application, RoofReflex doesn’t rely primarily on reflective technology for its thermal performance, the bulk of the product is 0.0366 W/m²K insulation, made from 100% recycled plastic bottles. This gives the product a true thermal value which can be used in a U-value calculator, as opposed to merely having an R-value based on reflectivity alone. RoofReflex’s reflective, low emissivity surface also gives the product an additional level of performance when it’s installed facing a cavity. How can RoofReflex assist with new Part L U-value requirements? RoofReflex is used in the external element of walls and roofs, therefore not contributing to the truss/stud depth. Owing to its excellent thermal qualities, you can reduce the amount of rigid insulation required. To give an example of this in a new build roof scenario, the introduction of RoofReflex above the rafter could potentially reduce the PIR insulation between the truss to a single 150mm board, and still achieve a 0.11 W/m²K U-value, when used in combination with a highly reflective vapour control layer, such as Novia VC200, behind the plasterboard within a low emissivity cavity. RoofReflex doesn’t only provide an alternative solution to new Part L requirements, it can also help to reduce solar gain in summer by reflecting heat away from the building thanks to its reflective surface. Additionally, being an insulation and not just a multifoil, RoofReflex has acoustic benefits, plus it will also help to reduce thermal bridging. The modern-day aim is to build airtight and wellventilated houses. RoofReflex is both airtight and vapour permeable, and it has integral tape to ensure continuity of airtightness. With a great many benefits, RoofReflex is an excellent solution to many of today’s construction issues and there is peace of mind with every installation, as RoofReflex is backed-up by a 10- year warranty. Contact Novia Limited novia.co.uk Novia Limited 38 TC DECEMBER <strong>2023</strong>
Roofing Updates CCPI FOR JB RED For further info on all these updates and more, visit www.total-contractor.co.uk Marley’s JB Red Batten has become one of the first construction products to achieve verification with the new Code for Construction Product Information (CCPI). Developed following the Hackitt review into building regulations and fire safety, the CCPI is backed with industry support, and aims to change the way construction product manufacturers manage and provide information on products. The third-party verification means that users of a specific product can have confidence that it has been fully assessed across a series of eleven clauses. They include the internal product information sign off process, removal of misleading or ambiguous wording in product descriptions, availability of documentation to support specific product claims, and a robust and ongoing training programme to ensure product knowledge is only relayed by competent personnel. Marley says its JB Red Batten is the first of its products to have achieved the standard set by the CCPI, having undergone the full assessment process. As the only BS 5534 factory graded roof batten manufactured in the UK, JB Red now holds both BBA certification and carries the CCPI mark. Daniel Weait, National Accounts Manager and CCPI Project Lead at Marley, commented: “We are delighted that the JB Red Batten has been verified to carry the CCPI mark. As an early adopter, Marley is supportive of the construction industry’s efforts to ensure transparent product information is available across the supply chain to help specifiers and product users make better informed and accurate decisions.” www.marley.co.uk SCOTTISH FOCUS FOR PERMAROOF COMMERCIAL PermaRoof Commercial has completed a significant project on a property in the East Lothian region. Using a total of 250 square metres of the PermaRoof 500 liquid roofing solution across four separate roofs, as well as the RubberGard EPDM, the PermaRoof commercial team advised the Edinburgh-based installers, Tait and Mapp, throughout the project. The P500 system was chosen for its fast-acting weather resistance and roll-on application making it ideal for complicated roofs. Sunny Lotay, National Commercial Manager of PermaRoof Commercial, said: “We’ve been gradually extending our presence in Scotland over the past year and this project has been a great foothold for us to demonstrate our expertise and ability there. We’ve already had multiple leads generated from the results we’ve been able to share. We’re sure this upward trajectory will continue to rise and are looking forward to upcoming work planned in Scotland. “This job was a textbook fix. Everything ran as smoothly as it could. We’ve known the client for a long time and are always happy to help whenever they come across even a minor issue. When we first visited the project, we carried out all the relevant core testing and site surveys and continued to be on hand throughout installation to offer our full technical support where needed.” www.permaroofcommercial.co.uk/ TILE VENT SALES ARE UP FOR KLOBER Roofing manufacturer Klober has revealed an impressive 27.4% surge in year-on-year sales for its tile vent offering, which it attributes to growing awareness of the need to address roofspace ventilation. Nick King, Portfolio Manager at Klober, believes this provides a panorama of the industry’s wider understanding of the importance of ventilation, and can be attributed to increased guidance from Government. In particular, he says key updates to building regulations are affecting construction, with new ventilation requirements coming into effect in 2025 under the Future Homes and Building Standard. Nick commented: “These trends present a clear picture. As the management of moisture in homes has become more crucial, we have seen an increased focus on retrofitting components that aid ventilation, which indicates growing awareness of the dangers of condensation and associated mould growth. We’re keen to continue working with contractors and merchant customers to deliver efficient domestic solutions that preserve homeowner safety.” For those wishing to find out more about the solutions to ensure movement of air and the elimination of condensation, please visit: https://klober.co.uk/resource-centre/downloads DECEMBER <strong>2023</strong> TC 39
Page 1 and 2: DECEMBER 2023 Feeling you are at a
Page 3 and 4: Editor’s Intro MATT DOWNS EDITORI
Page 5 and 6: REGULARS 12 NFRC ROOFING TALK Ruth
Page 7 and 8: WestWood Liquid Technologies Limite
Page 9 and 10: STILL THE MARKET LEADER PRICE DROP
Page 11 and 12: UNROLL YOUR POTENTIAL Become accred
Page 13 and 14: TAKE YOUR ROOFING BUSINESS TO THE N
Page 15 and 16: “THE NEW COMPETENCE REQUIREMENTS
Page 17 and 18: Maximum reliability. Minimum fuss.
Page 19 and 20: “2023 HAS BEEN A YEAR OF REGULATO
Page 21 and 22: “THE LRWA IS POISED TO COLLABORAT
Page 23 and 24: LEARN MORE You may just see a roof.
Page 25 and 26: The Liquid Roofing & Waterproofing
Page 27 and 28: MANUFACTURERS OF PVC SINGLE PLY MEM
Page 29 and 30: Redefining Surfaces. Redefining Pro
Page 32 and 33: Flat Roofing CELEBRATING 100 YEARS
Page 34 and 35: An ever-increasing number of househ
Page 36: Pitched Roofing WE CONTINUE TO INVE
Page 41 and 42: you’ve e hired you’ve hired the
Page 43 and 44: TC: What are some of the most commo
Page 45 and 46: LOOKING FOR AN ALTERNATIVE SUPPLIER
Page 47 and 48: DON’T BE CONSTRAINED BY 100MM CAV
Page 49 and 50: A central requirement of the Buildi
Page 51 and 52: FORMULA HIGH PERFORMANCE MARKETING
Page 54 and 55: Workwear Choices POOR QUALITY WORKW
Page 56 and 57: Workwear Choices Continued from pag
Page 58 and 59: Updates For further info on all the
Page 60: WITH SIDERISE ® Global experts in

December 2023

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