Quote:
Originally Posted by kbhale
Upside down it is to excrete the foam. Very nasty if you get it on ya. Be careful the foam well swell pushing weak flexible stuff a part.
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I heard ya! I'm planing to wait at least 24 hours for the adhesive to fully cure before pumping in the foam.
I used some of the regular crack filler foam a few years ago, when installing
a big (powerpig) 18,000 BTU in-wall AC.
I was amazed at it's expansion. It seemed like I was just using a small
amount, but it expanded so much that, when I came back from lunch,
half of it was hanging outdoors.
A lot of trimming was needed.
The space to be filled is about 1.2 cubic feet . I hope the void will be mostly filled.
If not, 4 cans of foam should still cut the heat loss a good bit. Some is better than nothing.