Choosing the Best Air-Sealing Method

the74impala | Posted in General Questions on October 10, 2020 09:58pm

My nearly 2 year odyssey continues.

This is an outside wall that I had a feeling was not up to snuff.

I have done a quick trial of using 1/2 ” plywood with Kreg screws with improving quality on the second try.

I am probably go back with the cathedral ceiling so I need the gable and the rest of the wall air sealed.

Polyiso bulging into wall cavity from logs getting shoved to far in, rodent infestation (people who claim polyiso is rodent proof/resistant make me laugh), holes on aluminum flashing.

Just tape? Polyiso? EPS? Plywood?

Answer

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.

Start free trial

Replies

the74impala | Oct 10, 2020 09:59pm | #1
More photos
Expert Member

BILL WICHERS | Oct 10, 2020 10:01pm | #2
Some areas look like canned foam would work, but if you need to seal that entire wall, spray foam would probably be best from a labor savings standpoint.

Bill
ssnellings | Oct 12, 2020 01:30pm | #3
It may just be me, but I'm not clear on what the goal is - are you trying to seal the exterior side of this wall from the inside? Like, seal each stud bay against critters/air infiltration from the exterior?