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Best adhesive for Visqueen lapped to concrete block?

DexterBob | Posted in General Questions on

Looking for an adhesive to stick my 6 mil visqueen vapor barrier to the concrete block stem wall. I want to lap the visqueen up about 6 inches. I have tried duct mastic which sticks well to the block but readily peels from the visqueen. Something other than Tremco?

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  1. GBA Editor
    Martin Holladay | | #1

    The old method was to use Tremco acoustical sealant between the polyethylene and the concrete blocks, and to secure the seam with a 1x4 batten fastened with TapCon screws. The new method is to use Siga Wigluv tape.

    [Note to GBA readers: You may be thinking, "What is visqueen?" It's regional dialect. I've never heard the term on a construction site. But in some areas of North America, that's what they call polyethylene sheeting. Visqueen was originally a brand name.]

  2. STEPHEN SHEEHY | | #2

    You might try 3M 8067 flashing tape, which is a little cheaper than Siga Wigluv.

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