BUILDING FABRIC 55


MASTERING COMPLIANCE: HOW SUPPLIERS CAN HELP WITH PARTS L & F


To create a ‘stepping-stone’ towards the mandatory Future Homes Standard in 2025, changes to Part L & F of the Building Regs came into eff ect in 2022. Colin Wells of Keylite Roof Windows discusses how window manufacturers can help housebuilders produce the required uplift in energy effi ciency.


W


ith several changes made to the Building Regulations in England and Wales last year, including additions to ‘Conservation of Fuel and Power: Approved Document L’ and ‘Ventilation: Approved Document F’, housebuilders have been looking for products that take the headache out of compliance by ensuring they meet current requirements. The purpose of Part L is to ensure enery effi ciency in buildins, with new and existing homes in England now being


subject to higher building performance targets in an interim step towards the Future Homes Standard – which is due to arrive in 2025.


When it comes to heat loss, one of the biggest issues for housebuilders is thermal bridging, meaning an area of a building construction which has a sinifi cantly higher heat transfer (loss) than the surrounding materials. One example of where this would occur is with junctions around windows, including roof windows. If this area is not insulated it can lead


to cold bridging on roof windows; this is where the gap between the roof and window is left exposed to the temperature differentiation between the outside and inside, which can eventually lead to condensation and mould.


Some manufacturers have designed features that reduce the possibility of this occurring, ensuring products are designed in such a way that housebuilders don’t have to consider the ‘gap.’ These features help eliminate thermal bridging, which reduces the risk of non-compliance,


IT IS VITAL THAT HOUSEBUILDERS SPECIFY PRODUCTS THAT HELP MITIGATE THE GAP BETWEEN PERFORMANCE ON PAPER, AND THE ACTUAL PERFORMANCE OF A BUILD


WWW.HBDONLINE.CO.UK


Page 1  |  Page 2  |  Page 3  |  Page 4  |  Page 5  |  Page 6  |  Page 7  |  Page 8  |  Page 9  |  Page 10  |  Page 11  |  Page 12  |  Page 13  |  Page 14  |  Page 15  |  Page 16  |  Page 17  |  Page 18  |  Page 19  |  Page 20  |  Page 21  |  Page 22  |  Page 23  |  Page 24  |  Page 25  |  Page 26  |  Page 27  |  Page 28  |  Page 29  |  Page 30  |  Page 31  |  Page 32  |  Page 33  |  Page 34  |  Page 35  |  Page 36  |  Page 37  |  Page 38  |  Page 39  |  Page 40  |  Page 41  |  Page 42  |  Page 43  |  Page 44  |  Page 45  |  Page 46  |  Page 47  |  Page 48  |  Page 49  |  Page 50  |  Page 51  |  Page 52  |  Page 53  |  Page 54  |  Page 55  |  Page 56  |  Page 57  |  Page 58  |  Page 59  |  Page 60  |  Page 61  |  Page 62  |  Page 63  |  Page 64  |  Page 65  |  Page 66  |  Page 67  |  Page 68  |  Page 69  |  Page 70  |  Page 71  |  Page 72  |  Page 73  |  Page 74  |  Page 75  |  Page 76  |  Page 77  |  Page 78  |  Page 79  |  Page 80  |  Page 81  |  Page 82  |  Page 83  |  Page 84