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Question:

Is it ok to pour floor leveling compound over hardibacker cement board?

Is it ok to pour floor leveling compound over hardibacker cement board?

Answer:

Yes, just make sure you've used a lot of screws to hold the backer board down or your compound will crack to pieces if the board moves at all.
May 11, 2017
ive used a liquid leveling compound on it and got great results on cement board though the drying was spotty and needed more than one layer to achieve desired results. it was only on a very small area about 8 x 10
May 11, 2017
what do the instructions say?
May 11, 2017

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