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Gap between top of shower tray and bottom of plasterboard

Discussion in 'Tiling' started by winterdune, 29 Apr 2017.

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  1. winterdune

    winterdune

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    Hi everyone,
    I'm clueless about this but after our last shower developed a big leak (it was 15 years old) I'm having a new one installed and the plumber put the shower tray in yesterday, cutting it in under the plasterboard, but leaving about a 2cm gap between the top of the tray and the bottom of the plasterboard. The tiler is due to come now before the plumber returns to finish the shower enclosure, but surely that gap needs filling somehow or a space will remain behind the tiles for water to seep through? Am I right to be worried?
    Thanks
    Sean
     
  2. flameport

    flameport

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    Definitely. There should be no gap, the tray should not be cut into the wall, and the wall should not be made of plasterboard either.
     
  3. winterdune

    winterdune

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    It's waterproof plasterboard and the tray has a lip so the tiling goes on top of it.
     
  4. rssteve

    rssteve

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    Do you mean water resistant. Will still not cope if it gets wet
     
  5. chris_o

    chris_o

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    If it's plasterboard it will need tanking before it is tiled
     
  6. chappers

    chappers

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    as above fill the gap and then tank
     
  7. chris_o

    chris_o

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    I'll elaborate some more on the tanking if you're not aware what it is.


    http://www.google.co.uk/shopping/pr...Fv7uIBw&lsft=gclid:COKS4re43dMCFZadGwodhV8KTg


    That is what you need, on offer at toolstation at the moment. Fill the gap, then prime all plasterboard to be tanked with supplied primer. Bed the rubber tape in tanking paste on all joints and corners etc. Then give whole area 2 coats of tanking paste, when dry you are ready to tile. For the sake of £50, and to save ripping the plasterboard out and replacing with cement board, I would 100% do this.
     
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