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Community and Q&A

StoGuard WRB

jackofalltrades777 | Posted in Green Products and Materials on

Can one apply a product like StoGuard with EmeraldCoat WRB on OSB roof sheathing and then at a short time later apply a peel & stick membrane over it?

Will the peel & stick adhere to OSB covered with StoGuard WRB?

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  1. GBA Editor
    Martin Holladay | | #1

    I don't know. But since peel-and-stick membranes are waterproof, vapor-impermeable air barriers, I don't know why you think you would need StoGuard with Emerald Coat.

  2. kloopster | | #2

    I agree with Martin, when applied correctly, peel and stick functions great in a roof application.

    I am very interested in Liquid WRBs and the Air infiltration benefits they provide.

    I am a bit confused (and always have been) as to how a roof (abutting fully conditioned space) can be very airtight given the gap necessary between the sheathing. I have started to lean more towards under roofs and over roofs as a configuration, with light colored exteriors to reduce the massive solar heating that dark shingled roofs transmit to the sheathing.

    I know the answer put forth is always "spray insulation", but what happens when you need to replace sheathing in the future? I like the idea of building a 100 year wall but flipped over to be the roof, and using exterior (taped) foam over a liquid applied WSB and with butted sheathing.

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