Ditra Not Sticking To Floor

Another reason would of course be too much deflection in the subfloor or bad prep.

Ditra not sticking to floor.

Skip to main content. When installing heated tile floors with ditra heat mat or ditra heat tb there s two instructions that i would encourage you to avoid. 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.

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. 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. In some applications the vertical section of the floor wall transition will not accept a bond to schluter set schluter all set schluter fast set or unmodified thin set mortar.

If you do not get the mix right or use an acceptable product or install it properly your results will be less than optimum. Since ditra is impervious it does not deprive the mortar of its moisture. This allows the cement to properly hydrate resulting in a strong dense bond coat. Skip to primary navigation.

Ditra can not cause a problem it can only prevent them. While ditra is my preferred membrane for floor tile installation as well as countertops and tub decks it absolutely needs to be installed correctly. 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.