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Stone shower tray fitting on chipboard floor board, advice please?

Discussion in 'Plumbing and Central Heating' started by Flatlander, 29 May 2016.

  1. Flatlander

    Flatlander

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    Hi all

    I am fitting a stone shower try upstairs on to chipboard flooring the instructions say lay it on a wet mortar mix which is fair enough my question is the wet mortar mix will blow the chipboard and I presume might be uneven when it all dries out

    How can I seal the chipboard or can I just lay a sheet of plastic on the flooring before adding the mortar to stop it blowing?
     
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  3. stardanny

    stardanny

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    Chipboard is unsuitable for shower tray.

    You need to remove chipboard the shower sit on and replace with marine plywood about 18 to 25mm thick.

    Daniel.
     
  4. Madrab

    Madrab

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    If changing the floor isn't an option then lay a thin layer of well screwed marine ply over it, or don't use mortar, use a solvent based bedding material. Wet mortar mix isn't the only way to bed a tray.

    I always recommend tanking if moisture resistant board and/or plasterboard/ply is to be used in wet areas.
     
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