The Document L Building Regulations apply to virtually all new buildings in England and Wales, and to extensions, alterations and change of use of existing buildings. They provide legislation and guidance to the building, construction and home improvement installation industry.
With effect from 1st April 2002 any windows, rooflight or door having more than 50% glazing needs to comply with the new regulations. These regulations also apply to conservatories attached to a building. This means that the combined frame and double glazing units will need to be more efficient and must be tested and certified to comply.
Merryhill Windows certify that all installations comply with the requirements of Document L in terms of the glass and materials used in the manufacture of installations.