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Community and Q&A

Installing a one piece shower

MichaelBa | Posted in Green Building Techniques on

Hello,

My cousin and I are installing a one piece shower this weekend, in his guest house he is building on his property. Property is located in zone 3.

I told him I would do a little bit of research beforehand.

He is using an interior vapor retarder called intello plus. I am wondering if it is ok to install the shower directly over this or if there is any reason drywall should go up first?

Also, the manufacturer requires no cements bed under the shower. Would it be wise to lay a vapor barrier cutout underneath the shower or can we just install directly over the plywood subfloor?

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Replies

  1. Expert Member
    MALCOLM TAYLOR | | #1

    Michaelba,
    The intello is fine on it's own as long as you air-seal the edges. If you drywall behind you would have to drywall the whole wall, then add a second layer on top to cover the shower flanges.

    No need to any vapour barrier under the shower.

  2. MichaelBa | | #2

    Cheers, Malcolm.

  3. Expert Member
    MALCOLM TAYLOR | | #3

    Michealba,
    You can add a bit of additional solidity similar to that offered by a cement bed by spray-foaming under the tub. Do it in small lifts though or it can push the whole unit up.

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