Where the Dorma is built out on the hip section with no flat roof.
Allerton Grange North Leeds
The design of this loft conversion was done so as no flat roof section would be required but still having maximum space to the inside, in fact we had to use 7m length 150mm x 300mm RSJ steel sections to support the existing roof and the new floor. The reason for the large steel sections was the client wanted a large open area with no internal walls. The insulation used was a Super Quilt 14 with 50mm of kingspan between rafters, by using the super quilt product it ment that we did not need to use Kingspan insulation over 50mm i.e 150mm so leaving more headroom within the loft space.
The whole of the external structural work took no longer than 3 weeks and was kept watertight throughout the whole process. It was also decided to use a concrete small tile to match within the existing roof. UPVC facias/soffits and gutters were used for a maintenance free roofline system.
As the completion of the exterior work neared the inside could be started this included the flooring which included the floor joist held up by two RSJ's and the floorboarding. We had to support the existing wooden purlins with a studded supporting wall to both sides. The internal stud partitioning was errected to provide a shower and toilet facility. The staircase used was a steel sectioned open planned staircase that ran at the rear against the parting wall to the middle of the building. Four velux windows were supplied and fitted to give maximum light to the bedroom, shower & Toilet and the stairway landing. Standard UPVC Windows were also fitted to new dorm section to give more light to the far side of the bedroom.