Walls and Ceilings - vapor barrier - shower walls

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Bigfootr
04-28-09, 07:53 PM
I have installed an acryllic shower pan; shower surround is down to studs. I am planning on using cement board for the shower walls. I understand that I need a vapor barrier behind the cement board. I am thinking about using 6 mil poly. Do I run the sheets vertically or horizontally? I have heard/read that the sheets must be sealed - how is this done? Also, I have heard/read that the poly should go over the top of the shower pan flange by a 1/2 inch or so. Have also heard that where the cement board meets the top of the flange, it should be caulked. If poly is to go 1/2" or so down over the top of the flange, obviously cannot caulk. What is the proper way to do this? Thanks

Filipczak
05-12-09, 03:25 PM
Dear Bigfootr,

This is a site I found that might be helpful in your situation.
Cement Backer Board (http://www.askthebuilder.com/199_Cement_Backer_Board_.shtml)

Cody Filipczak
Owner of C&M Properties and Construction, Inc.
Eau Claire Custom Home Builder - C&M Properties and Construction, Inc - Eau Claire Wisconsins Premier Custom Home Builders (http://www.candmhomebuilders.com)