Ditra Not Sticking To Floor

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

Ditra not sticking to floor. This allows the cement to properly hydrate resulting in a strong dense bond coat. While ditra is my preferred membrane for floor tile installation as well as countertops and tub decks it absolutely needs to be installed correctly. 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. Make sure the cavities waffles are filled correctly install it over an approved substrate and with the correct type of thinset mortar.

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. Skip to primary sidebar. The two main techniques for this are fairly simple. 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 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. Another reason would of course be too much deflection in the subfloor or bad prep. If you do not get the mix right or use an acceptable product or install it properly your results will be less than optimum. Ditra can not cause a problem it can only prevent them.

I don t see a scenario where ditra can be blamed for a tile failure. Skip to main content. 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.