Timber Frame Roof Insulation Details

If you have an existing log or timber framed home adding insulation and ventilation can be a major challenge and expense due to demolition costs.
Timber frame roof insulation details. The basic steps for my project were. 14 replies 10114 views. Eaves and rakes overhangs are then floated on top of the foam resulting in zero thermal bridging. 2 09 suspended ground floor slab.
Looking for advice to properly roof my timber frame shed started by brian weekley on timber framing log construction. 4 09 suspended ground floor slab. When the rafters are exposed such as in timber frame houses this technique is not. There are several ways to insulate the frame.
Wall ground floor junction scottish building standards. Timber frame roof sheathing started by theenglishlumberjack on timber framing log construction. 3 06 timber frame timber flat roof 3 07 timber frame timber flat roof with parapet 3 08 timber frame lintel at window head 3 09 timber frame windows and doors jambs and cills specification within an example should 3 10 timber frame ground bearing floor insulation above slab 3 11 timber frame ground bearing floor. Accredited construction details quinn building products junction designs to combat thermal bridging thermal bridging is a much talked about but little understood phenomenon in building design.
Finally insulation is added to the wall cavities. Insulation below slab. Thermal bridges occur at all junctions in the building as well as when penetrations of the thermal insulation envelope occur. Here two layers of rigid kingspan thermawall insulation are separated by breathable membrane and osb plywood sheathing.
Using a 140mm timber stud selected for frame rigidity with 60mm pir insulation between the studs and 60mm pir as an insulation wrap around the outside you can attain a u value of 0 16 w m2k. In typical lumber frame construction roof insulation is placed between rafters and then covered up with drywall. That second layer of insulation run vertically is taped off and spary foamed. This layer of 2x4s is run over top of all of the timbers in the timberframe.
12 replies 4215 views march 30 2014 03 11 53 pm by shinnlinger. Thermal bridges can account for 35 50 of overall fabric. Government accredited details developed by bre for local government. Normally the insulation is either built up above 2x ceiling roof decking that is installed on top of the trusses or sips structural insulated panels are installed on top of the timbers the range of insulation is dependent on the thickness of the sips or of the built up insulation.
Long timber screws are used to tie the 2x4s into the timbers.