Ditra Over Hardwood Flooring

They are both structurally in good shape.

Ditra over hardwood flooring.

We recommend removal of the finished hardwood flooring and then following the applicable ditra handbook detail. Minimizes total thickness of the installed floor and this reduces the transition to flooring that is lower such as vinyl carpet or engineered wood. Unlike hardwood floors where a bit of flexibility is desired tile surfaces need rigidity. Now someone told me i can t put ditra over hardwood.

Ditra xl is 5 16 7 mm thick to create an even transition between typical 5 16 7 mm thick tile and 3 4 19 mm thick hardwood flooring ditra xl allows for ceramic tile application over single layer plywood osb subfloors on joists spaced at 24 610 mm o c. Everything thing is solid screwed thru the floor to the joists and sanded clean. Allows you to install ceramic tile over a single layer of plywood or osb subfloors on joists with wider spacing such as 24 inches on center. Underneath is a 3 4 maybe 1 plywood subfloor over the top of the original subfloor.

Floor joists are 1 75 x 9 16 oc longest support span is about 12 feet. The subfloor is 3 4 x 7 tongue and groove plank with some knots set on the diagonal. The ditra heat floor heating system is designed for use under tile and stone flooring only. I m ready to start tiling in an old house 3 4 subloor with 1 1 2 x 3 4 oak flooring.

The floor was a cheap glue down laminate tile that i pulled up. The floor slopes down to one corner by 3 4 over 3 feet you can see this in the shower picture. I plan to use the thinner ditra uncoupling membrane. My main concern was whether is was okay to put thinset directly on an old hardwood floor and if i should use an unmodified thinset between the hardwood and the ditra followed by modified between the ditra and tile.

Please give us a call so we can discuss your options and get you the best system for your application. In spots the last install used leveling compound some of this broke and pulled up with the tiles. The 3 4 hardwood is on top of 7 8 tungue and groove plank flooring. However we have a number of other products that can be used under lvt.

We don t recommend or warranty ditra or ditra xl installation over existing hardwood flooring as it is very unstable and difficult to bond to making it a poor substrate for tile. I have not contacted schluter yet.