Cement backer board installed on plywood wall?
#1
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Cement backer board installed on plywood wall?
Hello everyone,
I have a question that I can't seem to find anywhere on the internet. I am installing a new shower in my bathroom and planning to tile. However, after tearing out the old shower I have found all my walls are lined with plywood. Can I install hardiebacker or equivalent directly on this plywood?
Thank you,
Trevor
I have a question that I can't seem to find anywhere on the internet. I am installing a new shower in my bathroom and planning to tile. However, after tearing out the old shower I have found all my walls are lined with plywood. Can I install hardiebacker or equivalent directly on this plywood?
Thank you,
Trevor

#3
The tile guys will get with you on tile prep, my concern is structural. The sheathing might be there for a reason.
Large, tall walls are often covered with sheathing and drywall to provide lateral strength.
If you have a situation like this, I wouldn't cut out the sheathing.
An example would be a 2-story house with narrower walls than usual.
Large, tall walls are often covered with sheathing and drywall to provide lateral strength.
If you have a situation like this, I wouldn't cut out the sheathing.
An example would be a 2-story house with narrower walls than usual.
#4
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Put some kind of moisture barrier behind the backer board. The tile guys will tell you what is best.
#5
Yes, install your backerboard on the plywood is fine. Is that an electrical outlet in the shower?
What type of base or shower pan are you planning?
What type of base or shower pan are you planning?