Timber Frame Roof Insulation Details

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

Timber frame roof insulation details.

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. 14 replies 10114 views. 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.

Once we are done insulationing it s time to add the first layer of 2x4s. 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. 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.

This layer of 2x4s is run over top of all of the timbers in the timberframe. There are several ways to insulate the frame. Long timber screws are used to tie the 2x4s into the timbers. Timber frame roof sheathing started by theenglishlumberjack on timber framing log construction.