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kemerick 10-02-2007 08:32 PM

How to finish my bathroom?
I have a 10' ceiling bathroom that I am finishing. My question is regarding the granite tiles I want to put on the walls of the shower, and the two pony walls. This image shows the area: Bathroom image

As you can see the green board was installed by my contractor, as I was not really thinking ahead. I know I should have had the area floated but I didn't.

It may be over kill but my plan is use 30 lb roofing paper on top of the green board, a layer of mortar, then 1/2" Hardibacker (due to the shower valve installed position), another layer of mortar and then my granite tiles.

The bottom hot mop area is about 10" high and the green board protrudes about 1/2" out into the shower center past the hot mop. I am thinking I just float the grout on top of the hot mop and then my tiles? Or do I extend my green board down to the ground, or some distance above it?

Am I way off base here or am I close?

Ron6519 10-03-2007 12:32 PM

I don't understand the use of sheetrock in the shower area at all. There are many other products better suited to be used. The two niches are prime candidates for water infusion. What use is the 1/2" hardibacker over compromised sheetrock.
The wall treatment(sheetrock) should have gone over the shower curb to cover the seam, not butt up against it. Even if the hardibacker goes on top. You should never miss an opportunity to keep water away from getting behind the wall.

kemerick 10-03-2007 06:07 PM

The sheetrock goes over the hot mop by a few inches. It does stick out past the hot mop is what I meant. If I were to Hardibacker over the sheetrock and take it down to the floor, there would be a void behind the Hardibacker at the bottom. My intent was to just mortar it.

So what are you suggestions at this point Ron?

kemerick 10-09-2007 06:52 AM

Does anyone have any suggestions for me at this point? Tear off the green board and start over?

I talked to two tile companies in my area and they both said roofing paper with Hardibacker over the green board will suffice.

Mike Finley 10-09-2007 10:48 AM

Personally, I'd tear the entire thing out and start over. Those wing walls are way to unstable the way they are built. We'd build those out of 2x6s and run the ends down into the floor and bolt them to the joists. Work on getting those beveled ends of those wing walls perfect in the pictures they look like a wild beaver got at them. Tear out that green board and install a proper tile underlayment that will be flush with the finished drywall allowing your tile to end properly and not be proud. Look into some Nobel premade niches to install in those 2 holes. Nows the time to do the work required for longevity of your shower.

kemerick 10-09-2007 09:18 PM

Sounds like good advice Mike. I need to see about the shower valve fitting however as the way it is now, the green board needs 1/2 Hardibacker on top of it to make the valve flush. So if I rip off the green board and lay down 1/2" Hardibacker, I will need to move the shower valve back a half inch.

I don't think I am gonna do much to the Pony wall other than using some heavy duty L brackets where it attaches to the walls as they are pretty sturdy the way the are now.

I'll also look into some premade niches...

RemodelMan 10-10-2007 07:45 PM

Kyle, I gotta agree with Mike.
You'll sleep better knowing the backer board is designed to withstand moisture indefinitely. Hardibacker is ideal in this situation. I've seen the samples that have been soaking in a sealed container without any sign of deterioration.
It cuts easy too. You really ought to rebuild the wing walls. At this point,
you may wish to design in a recessed niche in the wall to accomodate shampoo and soap bottles etc. What's your plan to contain the shower head water? I imagine a half moon curtain rod? Or are you thinking about glass block or framed tempered on top of the wing walls?

kemerick 10-10-2007 07:54 PM

For the shower head water I plan on doing glass with a glass door. Once the granite tiles are done I will take measurements and get the glass cut.

RemodelMan 10-10-2007 08:04 PM

Check with a commercial glass company that deals with contractors, architects, designers etc.
They'll have several interesting hardware and glass options for you, to accomodate planned frames and doors. They usually welcome walk-in traffic who have exacting measurements(+ photos?!)on hand. Your pictures are very beneficial and will certainly help increase the value of your home when/if you decide to sell.

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