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Community and Q&A

Is a double housewrap OK?

Regulajo | Posted in Green Building Techniques on

I’m building in CZ6 and we will be getting started later than expected due to red tape (I won’t use red tape to seam seal since it appears to cause delays 🙂

Due to starting later than expected, I may end up having to use a liquid applied Tyvek on my OSB to get me through the winter, if I am not able to get the exterior insulation and siding on before the snow flies and it gets too cold.

Here is the wall assembly inside to out and I wonder if it works OK: drywall, 2×6 studs with dense pack cellulose, osb, TYVEK LIQUID HOUSEWRAP (weather delay dependent), 2″ polyiso, vaproshield revealshield housewrap, 1/2 or 3/4 battens, open rainscreen cement board and rusted steel siding for cladding.

Is the double house wrap OK?


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  1. GBA Editor
    Martin Holladay | | #1

    Yes, this would be OK. There won't be any problems if you have two layers of vapor-permeable WRBs.

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