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Doctor_Frasier_Crane t1_iycmpz5 wrote

I used 12-inch wide 6-mil poly under my basement walls and wrapped it up both sides and stapled it in place. Provides separation from the floor and some minor flood protection. I can get up to 6 inches of water on the floor and still have some protection for the studs.

I also have rolled dimple flooring underlay to provide separation and airflow under the vinyl plank flooring.

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