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nieceandtows

How do I seal this hole? (media.kbin.social)

submitted 1 year ago by [email protected] to c/[email protected]

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[–] [email protected] 7 points 1 year ago (1 children)

I would use fire block since normal expanding foam is flammable. If I could get behind it, I would see if the hole was excessively large and if so, cut a piece of OSB to fit the space with a hole the correct size in it. Then I would bisect the piece of OSB (making sure to bisect the hole) so that I would be able to get it around the cables and refrigerant line. If the hole isn’t excessively large, fire stop caulk the penetration and insulate the best you can.

[–] [email protected] 7 points 1 year ago (2 children)

I'd pack some stainless steel wool around it before doing the expanding foam. This will prevent rodents from chewing through it, which they can do to the foam.

They make rodent-blocking foam but I trust the steel wool more

[–] [email protected] 4 points 1 year ago

Weighing in to emphasize the importance of packing it with steel wool before using fireblock. It’s a game changer.

[–] [email protected] 3 points 1 year ago

We had a hole like that that mice kept coming through and steel wool + foam ended that problem.