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replacing bathtub walls

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01-23-17, 09:24 AM

owenpga

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replacing bathtub walls

what is the best way to waterseal a bathroom wall tub/shower combo?

i've watched numerous videos and there are different thoughts on the topic..

Not sure who exactly is correct.

i've seen some that suggest putting a plastic liner under the backerboard and others that suggest just coating the backerboard with waterproofing material such as redguard.
if someone could comment on the exact waterproofing material needed i would appreciate it.

thanks

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01-23-17, 12:52 PM

marksr

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Either way is acceptable. RedGard might be better but it's also pricier.

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01-23-17, 01:15 PM

owenpga

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i assume i wouldn't have to do both?

can you tell me what kind of liner i should get? i've seen what looks like black felt and also clear plastic.
thanks

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01-23-17, 02:16 PM

marksr

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You use one or the other. Most use plastic but at least one of our pro members prefers roofing felt.

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01-23-17, 02:16 PM

czizzi

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I've always used 15# roofing felt - cost is around $18 or you can go with a paint on one which costs $50 gal. and will give you enough to do 3 or 4 showers.

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