For example, window heights for dormer windows have a minimum height above ground level. general building regulations also apply, such as those for drainage if a loft en suite is installed. local variations exist. building regulations give practical guidance to comply with performance standards set out in various regulations.. When compiling building regulations notes for house extensions, bear in mind that building control or your approved inspector will want to see a comprehensive list of building specifications including floor type (eg solid floor), roof construction, wall type and construction, and foundation type.. The approved document c and f, of schedule 1 to the building regulations. 2:5 staircase provision to the new storey with reference to the approved document k, of schedule 1 to the building regulations. 2:6 thermal insulation of the conversion with reference to the approved document l, of schedule 1 to the building regulations..
For dwellings of masonry construction, restraint should be provided at rafter level for gable walls. larger gable or separating walls may also require restraint at ceiling level. see sitework clause s3. guidance in assessing when ceiling restraint is needed can be found in building regulations. lateral restraint straps should have a. A dormer loft conversion is a structural extension which projects vertically from the plane of a sloping roof. by building a dormer onto an existing roof a cramped attic can be transformed into usable space thanks to the creation of additional headroom and floor space all bathed in natural light provided by dormer windows.. Take, for example, a typical timber dormer window construction designed to achieve a u value of 0.15kw/m 2. assuming 38x63mm timber studwork, 60mm vips should be fitted tight up against pre-installed osb or plywood sheeting, ensuring the vips are flush with the outside surface of the studs..
