Basement insulation / Discussions

What do I in my basement where new insulation meets old?

...basement foundations. Is this a cause for concern for moisture, air sealing, and different vapour methods and insulation types? (Old Poly vapour sheet and fibreglass insulation vs new Rockwool and EPS) How do address the areas where the EPS is adjacent to the old insulation?  If I demo the laundry room and continue wit...

Posted by Steve J July 20, 2019 Basements improvements 2 responses

What is the best way to insulate rim joists with EPS and batts?

I'm trying to insulate Rim joists /cripple walls in basements have read about three methods using EPS & batt with slightly different orders. Plan to insulate concrete walls with 2" of EPS, with 2x4 framing (filled with rockwool batt), and then drywall. Which one of these approaches should I use?  1) Sandwich multip...

Posted by Steve J July 18, 2019 Basements improvements 3 responses

Do I need to insulate under the footings of a frost protected shallow foundation?

...insulation (where and when it is needed). This is exactly how we would build a slab, so we rely on insulation to protect the building from frost damage rather than relying on continued heat loss.  There are a couple of pages that I think will help you a lot, first this one -  How Much Insulation Does a Basement Floor N...

Posted by Jon Piana April 15, 2019 Slab on Grade 1 response

How should I insulate basement Walls in climate zone 5?

...basement walls has 2”  of foam on them so any warmer air from finished basement would permiate through mineral wool to the wall but air space would or should allow for dry out no? Thoughts on that specific method?  Any research on it or seen it before fail or do fine? I wouldn't go so far as saying it was a 'terrible' ...

Posted by Chad Johnson March 25, 2019 Basements improvements 1 response

Should I insulate my basement ceiling?

...basement ceiling to inspect wiring etc. My concern is this; the unfinished basement will be cold next winter and that will spread to the rest of the house with the ceiling opened up down there. Should I insulate the basement ceiling? It’s possible that our basement is not suitable for refinishing, so it might always be...

Posted by Nina Hartt March 21, 2019 Basements improvements 1 response

What is your opinion on filling block foundations with concrete?

...basement.  We’ve got a minor crack in the grout, and we were advised to fill the block with concrete for strength, in addition to repairing the grout.   Thanks in advance  Hi Nina,  That's a structural question that we would be unable to answer unfortately, since a crack in a block foundation may indicate an issue but ...

Posted by Nina Hartt March 21, 2019 Foundation and basement improvements 1 response

Basement reno - How do I effectively insulate my basement?

...insulation system (old) adjacent to another (new) and only separated by wood stud? Many thanks. We often get asked 'whats the best way to insulate a basement' particularly when people are doing basement renovations and energy efficient upgrades. The honest question, is there simply is no single 'best way' to do it, so ...

Posted by Steve J Feb. 13, 2019 Foundation and basement improvements 2 responses

Why is a my basement smelly and humid and how do i fix it?

...basement instead which would cost much less, will that do it? After fixing the problem I want to insulate the basement so I’m hoping for some advice. Thank you. Reducing your home heating costs would definitely be helped solved by insulating your basement. According to the Canada Mortgage and Housing Corporation (CMHC)...

Posted by Jeff O. Feb. 8, 2017 Foundation and basement improvements 3 responses