Unvented Ceiling / Discussions

Can I put a breathable peel and stick weather (air) barrier on the inside walls and ceiling?

...unvented flat roof ceiling. It's impossible to air seal all the joints and sistered joists with caulk or sealant because where the SPF meets the joints, the sea...

Posted by Anomika Singhn Oct. 1, 2018, 9:56 p.m. Air and vapour barriers 1 Responses

How do you insulate a cathedral ceiling?

...ceiling. I'm leaning towards not venting my cathedral ceiling and using closed-cell spray foam insulation. My walls are double 2x4 stud walls 12 inches deep a...

Posted by Raoul Lions Oct. 19, 2019, 8:07 a.m. Roof assemblies - new construction 1 Responses

What are the options for adding Exterior Roof Insulation?

...ceilings (standard scissor trusses). It was built in the mid 1990s to the R-2000 standard. I am looking to take it to a passive house level and have been lookin...

Posted by Marlo Raynolds Aug. 29, 2020, 9:19 p.m. Roof assemblies - renovation 4 Responses