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Thread: How big, if any, should the gaps be between cement board when using for tile backer?

  1. #1
    DIY Junior Member Arsinek's Avatar
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    Default How big, if any, should the gaps be between cement board when using for tile backer?

    I saw someone saying you should have gaps between your pieces of cement board when using it for a tile backer. Is this true? If so how big should the gaps be? Also will the gap be the same size if its a cement board to drywall seam?

  2. #2
    In the Trades kevinp's Avatar
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    I believe all CBU should have an 1/8 gap that is filled with mortar. Some manufacturers require joints to be taped with a mesh tape.
    Kevin Pridemore
    KPC Tile & Stone
    www.kpctileandstone.com
    Sinkits MS LLC
    www.sinkits.com

  3. #3
    DIY Junior Member Arsinek's Avatar
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    I found this on Durocks website "Fit ends and edges of panels closely but not forced together."

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