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    janejech's Avatar
    janejech Posts: 5, Reputation: 1
    New Member

    Nov 26, 2013, 07:14 AM
    Use cement or silicone to fill gaps between backer board?
    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's Avatar
    ma0641 Posts: 15,681, Reputation: 1012
    Uber Member

    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.

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