Skip to main content.
Ditra not sticking to floor.
Another reason would of course be too much deflection in the subfloor or bad prep.
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.
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.
This allows the cement to properly hydrate resulting in a strong dense bond coat.
Skip to primary sidebar.
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.
Skip to primary navigation.
The two main techniques for this are fairly simple.
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.
Ditra can not cause a problem it can only prevent them.
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 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.