Timber Frame Roof Insulation Details

Timber frame roof sheathing started by theenglishlumberjack on timber framing log construction.

Timber frame roof insulation details.

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. 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. Wall ground floor junction scottish building standards.

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. The basic steps for my project were. 4 09 suspended ground floor slab. Insulation below slab.

There are several ways to insulate the frame. 14 replies 10114 views. Government accredited details developed by bre for local government. 12 replies 4215 views march 30 2014 03 11 53 pm by shinnlinger.

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. 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. Eaves and rakes overhangs are then floated on top of the foam resulting in zero thermal bridging. 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.

In typical lumber frame construction roof insulation is placed between rafters and then covered up with drywall. Here two layers of rigid kingspan thermawall insulation are separated by breathable membrane and osb plywood sheathing. However it can be done from the roof side at the time you replace your asphalt or cedar roof with a new aluminum metal roof. Thermal bridges can account for 35 50 of overall fabric.

Finally insulation is added to the wall cavities. When the rafters are exposed such as in timber frame houses this technique is not. 2 09 suspended ground floor slab. Build a box around the timber frame air water seal it and then add exterior insulation to completely cover the box.

Long timber screws are used to tie the 2x4s into the timbers.