Ditra Uneven Floor

Floor joists are 1 75 x 9 16 oc longest support span is about 12 feet.

Ditra uneven floor.

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. Ditra is good for new concrete. 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.

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. It s completely waterproof and it allows the subfloor and tile layer to move independently. Multiple layers of vinyl is unacceptable. 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.

Can schluter ditra and schluter ditra xl be installed over vinyl flooring. 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. A seasoned floor that never sees moisture you could skip the ditra. Some limitations include the following.

Cushioned vinyl is unacceptable. Yes schluter ditra or ditra xl can be installed over vinyl. Megabond from lowes or kerabond are good un modified thin sets. The subfloor is 3 4 x 7 tongue and groove plank with some knots set on the diagonal.

Perimeter bonded vinyl tile is unacceptable. I plan to use the thinner ditra uncoupling membrane.