04/14/2026
Plumbing on an exterior wall. In Chicago. That’s a freeze risk if you don’t handle it right.
So we’re foaming the entire wall—closed cell foam, about 4 inches, R-value around 28. These pipes will be fine no matter how cold it gets.
And this building? Three-course brick construction. Old big boy construction. Not the single-course brick you see today.
This is how homes were built when they built them to last.