GBA Logo horizontal Facebook LinkedIn Email Pinterest Twitter Instagram YouTube Icon Navigation Search Icon Main Search Icon Video Play Icon Plus Icon Minus Icon Picture icon Hamburger Icon Close Icon Sorted

Community and Q&A

Insulating a Brick Intermediate Foundation Wall

joge2468 | Posted in GBA Pro Help on

Hold on to your hats. We are (still) remodeling a 1950s ranch in Asheville, NC. The home has a stepped down brick (double wythe) foundation with poured footers. We replaced the old basement slab with a 4” insulated/heated slab. We waterproofed everything below grade and installed interior and exterior French drains.

There is an existing intermediate 48”H brick foundation wall with 2×4 framing above separating a finished daylight basement from a conditioned crawlspace. The crawlspace has a rat slab. We intend to insulate the perimeter of the home on the interior with a combination of foam and Rockwool.

The question is, should we insulate this intermediate brick foundation wall and/or the 2×4 wall above it? (The brick begins about 5’ below grade.) I really don’t want to insulate the brick for several reasons: I like the look. I don’t want to lose the space. It’s unclear how much I would gain thermally. And I don’t want to introduce any freeze/thaw issues.

GBA Prime

Join the leading community of building science experts

Become a GBA Prime member and get instant access to the latest developments in green building, research, and reports from the field.

Replies

Log in or create an account to post an answer.

Community

Recent Questions and Replies

  • |
  • |
  • |
  • |