最終更新日：2025/12/06
We sealed the attic gaps with spray foam, a chemical product made by mixing isocyanate and polyol resin that reacts and expands up to 30–60 times its liquid volume after being sprayed in place.
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We sealed the attic gaps with spray foam, a chemical product made by mixing isocyanate and polyol resin that reacts and expands up to 30–60 times its liquid volume after being sprayed in place.
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