Ditra Not Sticking To Floor

Kerdi band must overlap ditra and ditra xl at seams and at floor wall transitions by a minimum of 2 50 mm in order to maintain waterproof integrity.

Ditra not sticking to floor.

I don t see a scenario where ditra can be blamed for a tile failure. If it doesn t stick to the floor it s the fault of the installer for using the wrong thinset or not applying it correctly. This allows the cement to properly hydrate resulting in a strong dense bond coat. Another reason would of course be too much deflection in the subfloor or bad prep.

Using a thin set mortar that is suitable for the substrate apply the thin set mortar mixed to a fairly fluid consistency but still able to hold a notch using a 1 4 x 3 16 6 mm x 5 mm or 5 16 x 5 16 8 mm x 8 mm v notched trowel. Make sure the cavities waffles are filled correctly install it over an approved substrate and with the correct type of thinset mortar. In general we don t recommend the use of modified thin set mortar to set tile over the membranes because these mortars must air dry to cure properly. Skip to main content.

While ditra is my preferred membrane for floor tile installation as well as countertops and tub decks it absolutely needs to be installed correctly. Ditra can not cause a problem it can only prevent them. Since ditra is impervious it does not deprive the mortar of its moisture. When installing heated tile floors with ditra heat mat or ditra heat tb there s two instructions that i would encourage you to avoid.

Skip to primary sidebar. Thinset and sticking with ditra don t equate the only way ditra kerdi stata mat hydro ban sheet and any other fleece covered membrane designed to be applied with thinset relies on the thinset fully encasing and coating the fibers not sticking to them. The two main techniques for this are fairly simple.