Montreal / Discussions

How to properly insulate rim joists embedded in concrete in a home built in 50s?

...Montreal, Quebec so cold in winter, humid in summer :) House built in the 50s. We just redid french drain. MS delta wrapped the foundation. Thanks for any any input. Rim joists embedded in concrete is common in Montreal basements, and poses exactly the risks you are hearing about - that insulating them can trap moistur...

Posted by GP Mitchell May 30, 2025 Foundation and basement improvements 2 responses