I've been insulating the concrete walls of my basement with Dow Thermax rigid (sheet) insulation. It's the only stuff I found that does not have to be covered in the basement or attic, up to 4 inches thick.
On the "top" surface (near rim joist) of the concrete wall, I added 1 inch of Dow Thermax (can't add 2 inches, as there's only about 1.5 inches there). On the side walls, I've been adding two inches. In the attachments, I show a small, but difficult part of the basement:
[ATTACH...
A project I would never go again, but (rigid foam insulation on concrete basement walls)
On the "top" surface (near rim joist) of the concrete wall, I added 1 inch of Dow Thermax (can't add 2 inches, as there's only about 1.5 inches there). On the side walls, I've been adding two inches. In the attachments, I show a small, but difficult part of the basement:
[ATTACH...
A project I would never go again, but (rigid foam insulation on concrete basement walls)
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