Which is the best basement ceiling insulation?

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Which is the best basement ceiling insulation?

David Boone Jan. 9, 2021Last updated: Jan. 13, 2021

Hello, 

The basement ceiling/first floor of my house is insulated with 3 1/2" faced fiberglass with the vapor barrier on the house side (not pointed downward toward the basement). I want to had additional insulation, especially over the unheated garage. Is wool insulation over the existing fiberglass recommended, or should I simply add unfaced fiberglass insulation?

Thanks,

DB

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