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Old 11-18-2010, 11:41 AM   #1
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Master bath remodel... have lots of questions

I'm in the middle of a master bathroom renovation. I bought the house knowing the master bath was a mess, multiple leaks have existed for at least six years, all the subfloor was ruined, big mess. I ripped everything out, "I" beam floor joist on 16 inch centers look great (thank goodness) I replaced the rotten OSB subfloor with CDX 3/4 inch tongue and groove plywood, construction adhesive on top of beams, corrosion resistant screws every six inches, everything looks good so far.

I have two questions today... one is the 1/2 inch backer board that goes over the sub floor and under the tile. My plan is to put thinset down with a 1/4" X 1/4" X 1/4" square notch or U-notched trowel, put the backer board down, leave 1/8" spaces between all of the boards and the walls, and screw it down with 1 5/8" corrosion resistant screws every six inches. Then when I am laying the tile use Thinset tile mortar to fill in the spaces between the backer boards and hold the tiles down. Is this a good way to secure backer board and tile? I am glad to do additional work, getting it right is much more important to me. Oh, and I'm laying 18", grade 3, porcelain tile, thinking about trying a 3/8" square notch trowel on the floor to lay the tile. Any recommendation on trowel size notches for that is 3/8" the right size?

My second question is that I am going to be putting in a custom shower and I am consider using the Schulter Kerdi shower system. I have researched it a good bit, it seems like a good system. What do you guys think? Is this a DIY job or should I call in a pro? I'm pretty comfortable with the idea of doing it myself, but would prefer not to learn this lesson the hard way.



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Old 11-18-2010, 03:16 PM   #2
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On the backer board, look on the company's website for install instructions on what to use for thin-set, any spacing between sheets, and how to close up gaps. I used a modified and fiberglas tape designed for backerboard with thinset at the gaps when installing the tile. I always assume the instructions are best coming from the mfg. Perhaps I'm wrong but so far the floor is holding up quite well.


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Old 11-18-2010, 04:36 PM   #3
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the bath kit is what I saw holmes on homes use all the time. It looks like a good idea from my vantage point. Sounds like you have a European mindset of building. I like that my self. Build things to last and look good. takes a long time, but well it lasts longer.
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backer board , kerdi , schluter , shower , tile

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