Can You Put Ditra Mat On Concrete Board

Megabond from lowes or kerabond are good un modified thin sets.

Can you put ditra mat on concrete board. Now i am being told by different suppliers that if i use ditra then i should be able to forget the hardibacker no more ply and just put ditra down over existing sub floor pretty darned solid 22mm green flooring chipboard. Commonly called cbu or cement backer board or more technically cementitious backer units cement board underlayment was originally designed as a substitute for drywall in showers because it is resistant to moisture and mold and won t deteriorate when wet. This may make ditra a better choice if moisture from below is a concern such as with some outdoor applications or installations over concrete. I currently have concrete backer board everywhere and was hoping to put ditra over it so that everything is waterproof.

Ditra is waterproof while cement board lets water through but won t be damaged by it. A seasoned floor that never sees moisture you could skip the ditra. Or is priming of the concrete substrate unnecessary. Screws 8 apart hold the cement board in place but thinset between it and the subfloor ensure there are no springy weak spots and make the floor behave as if it.

I don t see anything about installing over concrete backer board. The alternative to ditra. Un modified under and over the ditra. For more specifics about exactly how ditra works you can check out provaflex vs.

It is totally false that you can walk on it or tile immediately because the next day she called me and told me that there were big dips and unevenness because of where we walked on the ditra and squished the mortar with our walking on it. 9 give or take a couple inches my sub floor is 1 2 inch real wood with plywood on top screwed and glued i am going to put down ditra long ways. A saw will cut it too but produces silica dust particles a razor blade is the better choice. Cement board can be scored with a razor blade and then snapped for a clean edge.

Before then using thinset into which to embed the ditra mat. So i was going to put down no more ply over the chipboard floor instead of the 12mm wbp then ditra over. I just put a ditra underlayment on my daughter s concrete basement floor.