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Old 11-22-2018, 11:11 AM   #1
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Spray Foam question


Hey Folks,

Looking to spray foam my 12x12 cabin. The cost is quite a bit more expensive but the mice got into my previous rockwool insulation, so I removed it.

So, if I spray foam the 2x4 walls, do I fully fill the 2x4 gap and then install wood paneling to finish?
If the full 1.5 inch depth of the 2x4 isn't covered, will mice get in behind the paneling? Should I make sure that the spray foam is flush with the 2x4 so the paneling is right up against the spray foam to limit mice intrusion?

I hope this wasn't too complicated.
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Old 11-22-2018, 11:48 AM   #2
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Re: Spray Foam question


I think it depends on how much you want to spend and/or how much R value you want.
Mice are very persistent and if they want to get through the spray foam, they will eventually chew through it.
One idea would be to place some metal mesh in the wall space before spraying the foam. Small gage wire so it's easy to cut. Tack a strip between the 2x4s every couple of feet.
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Old 11-22-2018, 03:09 PM   #3
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Re: Spray Foam question


The cavity should be 3 1/2" plugging holes dealing with mice would be a better approach.
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Old 11-23-2018, 10:13 AM   #4
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Re: Spray Foam question


Wold be easier to find where they are coming in and seal the holes up.
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