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mpetreye

11:01AM | 01/18/03
Member Since: 01/17/03
1 lifetime posts
Bvflooring
Hello,
We are remodeling our bathroom and want to tile the floor (5 ft x 6 ft area). We've removed the old vinyl flooring and are down to the subfloor which consists of 3/4" tongue and groove boards running diagonally over 2x8 floor joists. I was wondering if it was better to glue down 1/4" plywood, apply thinset and then 1/4" backerboard on top or just apply thinset directly to the subflooring and install 1/2" backerboard. The subfloor is in pretty good shape wiht a few gaps here and there. Thanks for your help! Marc

Dave Anderson

01:50AM | 01/20/03
Member Since: 10/23/02
41 lifetime posts
Our bath had 3/4 toung and groove running over 1x8 underlayment on top of 2x8 joists, running diagonally. I ended up ripping out the top layer of wood down to the underlayment. Then I put down hundreds of dabs of subfloor adheasive and 1/2" OSB. I screwed the heck out of it (every 6") to eliminate squeeks, etc.) On top of the OSB, I again used dabs of adheasive every couple inches, and put down 1/4" hardee backer board and again screwed it down extremly well. Then I used thinset and tiled it. I also put it a granite threshold from Home Depot in the doorway.

I'm very happy with the way it came out. Not a single squeek and extremely solid! Some say that you should use thin set between the plywood and cement board. This would be one way to do it as well.

Is your floor level? I would say that since you have toung/groove floor on the joists, that you could use a thinner 1/2 plywood or OSB. As for the backer board, you could go 1/2", but 1/4" would probably do the trick. Depends on how springy your floor is.

I'm assuming you took a good thickness of flooring out to get down to the t/g subfloor?

Dave

Dave Anderson

02:01AM | 01/20/03
Member Since: 10/23/02
41 lifetime posts
After reading more carefully, it seems you want to stick to a max height of 1/2" plus the tile (1/4") for a finished height of 7/8" (by the time you get thinset under the tile)?

If your floor is springy, then I would use the 1/2" cement board for sure, but if it's solid, you could go with 1/4" plywood and 1/4" cement board. I would glue the plywood to the t/g and either thinset or glue the cement board down. Make sure you use plenty of screws.

It's 6 of one in my opinion...

Dave

9735coop

04:28PM | 04/07/09
Member Since: 04/06/09
1 lifetime posts
I removed my old granite threshold from bathroom door, can you tell me how to replace a new one?

Thanks
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