Sealing an Open Exterior Wall - After
Channel: Nate the House Whisperer
Date: 2014-08-18

If you have a wall opened up during renovation, you have a chance to seal air leaks that you'll probably never have again. The best solution is 2 part closed cell spray foam, but 'great stuff' type foam or caulk is better than nothing.

NOTE: I goofed at the end, put the insulation BEHIND any plumbing lines in the exterior wall. Or better yet move the lines inside the house, they will always be a freeze risk, especially if we see more cold temperatures like last year.

I tested this job with my blower door, and it still leaked. A lot. Mostly around the messed up section from the ice dams. I'm not bad with a foam gun, and I screwed it up, so I highly recommend having someone with a blower door (usually an energy auditor) check your work.

The header above the window was replaced after this video was shot, and the hatch below was also sealed up.