Hi guys, My name is Mike Callaghan and I work in the Toronto, Ontario area of Canada.
i am looking for some info on 2lb spray foam insulation. The insulation was applied 2 weeks ago on a customers home on 2×6 stud walls and in quite a few of the stud cavities the foam is pulling away from the studs, in some places as much as a 1/4′.
Is this normal as the home owner wants to know if he should be concerned and as i am a finish carpenter i have little experiance with the product.
The gaps that i had a chance to look at were not just at the edge of the stud, but were clear through to the exterior sheathing as i was able to slide a pencil in with no resistance.
The home owner contacted the contractor that appled the product and was given $200 towards the cost of polyurethane spray foam cans to fill the gaps himself.
Any advice or info would be appreciated. Thanks,
Replies
if applied to thick spray foam gets hot as it cures, and then as it cools it will pull away as it shrinks.
Yeah, the contractor was sloppy. He should return and foam the cracks himself, or, if it's really bad, remove the foam and redo it correctly.
was given $200 towards the cost of polyurethane spray foam cans
Egad, what a hack.
COULD be a bad bach, COULD be that they sprayed to thick instead of coats, but i would think cold weather would be the issue.
What was the low temperature around the time the foam was sprayed?
These chemist are very specific about the temperature range in which the foam will react as intended. When a wall is cold, and in some cases to hot, the foam does not adhere to the back side of the sheathing.
by the installers response to the homeowner...more than likely he knows exactly why its doing what its doing and is just a POS