Moisture in walls / Discussions

Why is there moisture in the walls of my REMOTE wall construction?

...inally built my shop! The final construction is gyproc, furring, r15 batts, 2x6, osb 1/2, membrane blueskin vp160, 2 sheets of 4inch EPS foam (total of 8 inch), furring, siding. I put Lunos for air exchanger. But I noticed some issues lately. I checked the osb under the batts and in some areas, it is humid. I checked t...

Posted by David Perreault April 8, 2025 Wall assemblies - new construction 4 responses

Why is there condensation behind my vapor barrier?

...moisture content so there is always some moisture that will need to escape, which can usually happen through exterior walls. If you get the same result then you may have a more consistent source of moisture. The first step is definitely determining where the moisture came from, then give us some more info and we can he...

Posted by John Young Oct. 11, 2021 Wall assemblies - new construction 1 response

How do you stop air leaks in an old 1950's house?

...ing  dangerous toxin into the air like so many building products these days do. Read more below. After a look over those pages let us know if you have more questions. Aerobarrier Air Barrier Spray for Sealing air leaks in Attics or Homes Whether you're fixing a leak or finishing a renovation, choosing the right sealant...

Posted by Don Fraser Sept. 3, 2021 Air and vapour barriers 1 response