Understanding Part L

House builders and designers faced with major changes to thermal requirements for new and extended/converted dwellings from 6th April, can now turn to British Gypsum for a range of practical external wall solutions.

The latest 160+ page update of British Gypsum’s market leading HomeSpec guide now includes a complete section explaining the implications of the changes to Part L. HomeSpec 4 details a range of combined cavity fill and dry lining options to meet or exceed the new ADL minimum design U-values which now contribute to the overall SAP 2005 rating, to demonstrate whole building thermal efficiency.

Combining mineral wool full or part-fill cavity insulation batts with Gyproc ThermaLine thermal laminates provides the housebuilder with a cost-effective way of achieving or exceeding the new minimum design U-values. Homeowners will also benefit from a high quality internal lining and an insulation solution that meets the modern lifestyle, with rapid comfort conditions achieved, even with an intermittent heating regime.

British Gypsum’s one-stop guide, described by one top housebuilder as “one of half a dozen pieces that form the backbone of any technical library”, also includes detailed information on how to comply with the Part E acoustic requirements, including guidance on more specialised areas such as room-in-the-roof design, and communal areas.

House builders and designers can obtain a personal copy of HomeSpec 4 by calling the British Gypsum literature line on 08705 456123, or can download a copy from the company’s web site www.british-gypsum.com.

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