Interior French drain / Discussions

Can I use a dimpled membrane and Isorad panels for basement wall insulation?

...interior french drain also. I came across information that suggest to put a delta membrane along the wall and it continues under the concrete slab up to the french drain. I thought it was a good idea because it avoids the hygroscopic pressure on the concrete created if there is a non permeable membrane touching a wet c...

Posted by David Perreault May 1, 2026 Basements improvements 1 response