Thinset

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Could the movement be a space under your hardibacker?

I always put a layer of mortar thinset between the subfloor and the durock. Then I screw the heck out of it.


I tiled right onto concrete last week, just a small corner area for a wood stove to sit on. The mortar took 3 days to dry due to the temp of the concrete, It was 9 below outside. I had space hear and 500w halogen lamp next to it for 2 days.

I don't figure it will last as long as a job that is done in the summer. Like concrete mortar is best if dried evenly from both sides.




You never get the fruit if you don't go out on the limb!