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View Full Version : Use cement or silicone to fill gaps between backer board?


janejech
Nov 26, 2013, 07:14 AM
I have a few gaps between pieces of Denshield in the new shower we're putting in. Should I fill them with cement or silicone before I tile? We have plastic behind the Denshield backer board.

ma0641
Nov 26, 2013, 01:57 PM
Fill them with Acrylpro or thinset, not silicone. Silicone will prevent the new thin set from bonding to it and the tile will be loose.