Steam Shower Vapor Barrier
Is the following a good steam shower method:
1) 2x4 Stud
2) Vapor Barrier (stapled 1/4 inch staples) - 6mil Polyethelene plastic
3) Hardie Backer Cement Board
4) 30# Asphalt Felt
5) Wire Mesh
6) Mud float
7) Thin set
8) Marble Tile with Epoxy Grout
Also, how does one seal pipe penetrations through the vapor barrier and felt? What about the hot steam piple?
No, you've mismanaged the water vapour part. You've put the vb next to the studs...why? you'll wet the cbu and mortar - and that'll give you mould within 6 months. Then it's another tear-down.
That is a very labour-intensive method. Why not look into other methods that are specifically meant for steam rooms? We need further info on the marble type and on the thinset to set you even straighter.
Checking on Contractor Install
Thanks for the feedback. I am actually checking up on my contractor who is doing the work. They still do it a little old school I guess with the 30# Felt and Mud. The only thing I saw missing was a vapor barrier (now the 6mil poly at the studs).
This looks in line with the following documentation from Laticrete (see the manual on Steam Room and Steam Shower). They show the vapor barrier next to the studs and behind the cement board.:
Check out Schluter.com, they've got the best system out there.
Ok..talked it over with the Sunnyvale, CA building inspector and my contractor. This looks like what we are going with. Also discussed it with Noble TS rep. who said this is ok for a steam shower.
1) Studs 2x4
2) 1/2" Durock
3) Metal Lath
5) Noble TS (walls and ceiling)
6) Thinset (white)
7) Marble subway tile w/Laticrete Epoxy grout
The pan will be a "normal" mud pan with an impervious liner.
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