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retiling shower - skimmed boards to bare board transition

Discussion in 'Tiling' started by orbit500, 17 Jun 2014.

  1. orbit500

    orbit500

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    i'm moderate DIYer, more tools than knowledge ...
    our 2nd shower was leaking to downstairs so after fannying around a bit noticed grout was cracking on lower course of tiles ( 40x30 5mm ceramic ).
    off they came to reveal dot'n'dab onto unsealed skimmed 9.5mm board, grouted corners, the works :p
    took off door, tiles to 90cm height and refixed board with 200mm noggins and foam support - happy there and ready to tank with mapei kit.
    question : old boards are 2mm skim plus 3mm adhesive so will need that extra 2mm on the new bare boards.
    I'm not keen on skimming so can i just go up a trowel to 10mm which should compress to the 6mm total thickness ? Assume the Mapei has nominal thickness ( actually seems to be 1-2mm so maybe no change needed )
     
  2. tpt

    tpt

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    Yep, making up 2 mm with tile adhesive is fine
     
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  4. orbit500

    orbit500

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    thanks, appreciate that. i have white star - will be ok for these tiles ?
     
  5. tpt

    tpt

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    if you are going by the book they are a bit big for a tubbed adhesive, especially on a tanked background. you'd be better off with a cement based bagged adhesive.

    That said, those guidelines get broken lots, and theres a good chance it will be fine
     
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