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Old 10-31-2010, 09:12 AM   #1
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shower valve installation


I'm in the process of installing a new tub with tile surround. I have 3 questions.

1. Should the shower valve be installed before the actual tub is installed/ set?

2. Should water resistant material be installed behind the cement backer board?

3. What do you recommend for 1/2" backer board; durock, wonder board, or hardibacker??

any advice is fully appreciated!

thanks
RMC

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Old 10-31-2010, 09:31 AM   #2
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shower valve installation


When I installed my new tub last month, I set the tub down first, did the drain and then set up the end walls, then the plumbing.

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Old 10-31-2010, 09:43 AM   #3
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shower valve installation


1. Should the shower valve be installed before the actual tub is installed/ set?

It's usually best to have the tub in place first. Sometimes irregularities in the framing against which the tub rests can cause the actual centerline to be slightly off the stated measurements in the specs/instructions. Also, setting the tub in place can be difficult with the valve and spout stub protruding from the wall.

I'm a plumber, so I've only gotten involved in the rest of it (framing, tiling etc) once when renovating a bathroom for my mom. I used 15# roofing felt (tar paper) on the wall behind 1/2" durock, and I taped/mudded the seams in the durock before tiling. I had just read that in a DIY book, and it's worked well.
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Old 10-31-2010, 09:55 PM   #4
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shower valve installation


thank you both, that is what I thought, and what I will do....
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