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.

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. 4 09 suspended ground floor slab. Once we are done insulationing it s time to add the first layer of 2x4s. There are several ways to insulate the frame.

Finally insulation is added to the wall cavities. Timber frame roof sheathing started by theenglishlumberjack on timber framing log construction. Long timber screws are used to tie the 2x4s into the timbers. 2 09 suspended ground floor slab.

Thermal bridges occur at all junctions in the building as well as when penetrations of the thermal insulation envelope occur. Thermal bridges can account for 35 50 of overall fabric. Looking for advice to properly roof my timber frame shed started by brian weekley on timber framing log construction. Eaves and rakes overhangs are then floated on top of the foam resulting in zero thermal bridging.

That second layer of insulation run vertically is taped off and spary foamed. 12 replies 4215 views march 30 2014 03 11 53 pm by shinnlinger. 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. Government accredited details developed by bre for local government.

14 replies 10114 views. 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. Here two layers of rigid kingspan thermawall insulation are separated by breathable membrane and osb plywood sheathing. 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.

This layer of 2x4s is run over top of all of the timbers in the timberframe. The basic steps for my project were. 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. Build a box around the timber frame air water seal it and then add exterior insulation to completely cover the box.

Insulation below slab.