Should I use closed-cell foam to replace rodent-ruined insulation?
20-year old house has uninsulated basement (both a crawl space and a concrete part) and attic.
There is insulation in the ceiling of the basement of the type that you roll out, as well as the floor of the attic.
The insulation has been ruined by rodents.
It seemed that replacing the ruined insulation with 3″ of closed cell foam that would be clean and rodent-resistant would be an easy choice. But I want to make sure there are no serious drawbacks.
-Besides price, are there any drawbacks to properly installed closed cell foam?
-How much should I expect to pay for 3″ of closed cell foam?
-What questions should I ask to make the installer is qualified (I’ve read that improper installation would be bad).
-Instead of insulating the ceiling of the basement and crawl space, should I instead insulate the concrete walls down there? Similarly for attic, should I instead insulate the roof of the house?
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