Ditra Mat underlayment for tile is a tile backer that has some great benefits when installing tile over O.S.B. or plywood sub floors. Ditra Mat reduces the movement of the O.S.B. being transferred to the tile. By isolating the tile from the wood floor beneath it eliminates cracking in the tile and grout joints. Another benefit of using this innovative tile underlayment product is that you can lay floor tile on top of it immediately after installing it.
This article teaches you the simple steps to installing Ditra Mat.
In this article, you will find information about:
Roll the Ditra Mat out on the subfloor and use a utility knife to cut it to the desired length and or shape. If you have an area where the tile stops and another flooring like carpet starts you will want to hold the mat back between 1/8" and 1/4" from the edge of the tile. When laying down rows of the mat next to each other you should butt the edges to each other making sure that the edges do not overlap.
Follow the manufactures instructions and mix the modified thinset mortar. The modified thinset mortar is used to attach the Ditra Mat to the substrate. Modified thinset is much stronger and flexible than regular thinset but it can be a little harder to work with because it is more sticky or gummy when troweling.
Use 3/16" notched trowel to create a even layer of thinset on the O.S.B. or plywood subfloor. Make sure to get full coverage on the plywood substrate. The troweled thinset should look like perfect little rows without any large bumps. This will allow the ditra mat to lay flat.
Ditra has a fleece on the back side that becomes embeded into the thinset. This is what creates the bond between the Ditra Mat and the Plywood or O.S.B. substrate subfloor.
The Ditra Mat is now installed and you can immediately install floor tile on it.
step 5 Installing Tile On Ditra Mat
Installing tile on ditra mat is the same as most other tile substrates except that you must use the flat side of the trowel to fill the square holes on the top of the ditra with thinset before troweling on thinset with a notched trowel.
For more information on how to install floor tile read the article How To Install Floor Tile.
Images courtesy of schluter. Visit the Ditra Mat manufactures Schluter website at schluterhouse.com