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damian 06-12-2010 04:39 PM

Subfloor prep
Hi, I am tiling my bathroom and it seem to be slanted/uneven and I am wondering If i can actually put floor leveler under the sub floor over plank flooring or put down the sub floor then use the leveling compound, put down durock and then tile. help please

drunkenDIY 06-23-2010 01:02 AM

Hey Damian - I just had the same problem. I was remodeling a bathroom when I found one of the floor joists had rotten under the floor planks, so ended up having to replace some of them. Trouble was, the new planks were about 1/4 inch thinner than the old ones.

I laid the subfloor (used 1/4 ply) over the planks, and then used self-leveling underlayment. After the underlayment dried and I made sure it was completely level, I topped it with durock/hardie-backer and began tiling. So long as you're not filling a huge difference (more than 1/2 or so) you should have no trouble anchoring the durock through the underlayment.

Hope this helps!

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