Timber Frame Roof Insulation Details

This layer of 2x4s is run over top of all of the timbers in the timberframe.

Timber frame roof insulation details.

Looking for advice to properly roof my timber frame shed started by brian weekley on timber framing log construction. Timber frame roof sheathing started by theenglishlumberjack on timber framing log construction. 12 replies 4215 views march 30 2014 03 11 53 pm by shinnlinger. Here two layers of rigid kingspan thermawall insulation are separated by breathable membrane and osb plywood sheathing.

Long timber screws are used to tie the 2x4s into the timbers. 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. Timber frame construction does not lend itself to meeting the thermal envelope fortunately modern insulation technology offers several high quality insulation options. 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.

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. That second layer of insulation run vertically is taped off and spary foamed. Once we are done insulationing it s time to add the first layer of 2x4s. Can choose from stressed skin panel options or use a technique that we call the inside out method.