Ditra Uneven Floor

Yes schluter ditra or ditra xl can be installed over vinyl.

Ditra uneven floor.

A seasoned floor that never sees moisture you could skip the ditra. The garage floor was very uneven so i tiled it because most of the big project was problem to work on this uneven floor when it comes welding and all. The subfloor must be free of moisture damage including rot and sponginess and must be securely fastened to the joists and squeak free don t lay tiles on a concrete slab with cracks that appear to be spreading or irregularities that prevent you from leveling it. Megabond from lowes or kerabond are good un modified thin sets.

Ditra xl allows for ceramic tile application over single layer plywood osb subfloors on joists spaced at 24 610 mm o c. Ditra is good for new concrete. There are various types of tile underlayment but all serve to smooth out uneven spots in a subfloor and create an unbending layer that prevents the floor from flexing underfoot. 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.

Some limitations include the following. Floor joists are 1 75 x 9 16 oc longest support span is about 12 feet. I plan to use the thinner ditra uncoupling membrane. First time floor diy i would like to install porcelain stone or thin brick on my 1955 kitchen and hall floor.

Un modified under and over the ditra. It s completely waterproof and it allows the subfloor and tile layer to move independently. The subfloor is 3 4 x 7 tongue and groove plank with some knots set on the diagonal. Tile installers usually use cementboard as a tile underlayment over a standard plywood subfloor but as home flooring pros advises there are situations for which an uncoupling membrane is a better choice.

Before laying tile or installing a tile underlayment like schluter ditra it s important to check the subfloor to ensure a flat even surface at its worst a very uneven floor will result in broken or loose tiles and cracked grout joints. Multiple layers of vinyl is unacceptable.