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Why do I have to use thinset between HardieBacker board and the subfloor?

April 26, 2017hardiebacker subfloor thinset

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Why do I have to use thinset between HardieBacker board and the subfloor?

1 Answer

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10 Posted

Dry set (ANSI 118.1) or acrylic modified thinset (ANSI 118.4) is specified between the HardieBacker board and the subfloor to eliminate any deviations between our product and the subfloor. This decreases the probability of popping or cracking tiles due to deflection and air pockets.