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Tiling letting water through even with Membrane

Discussion in 'Tiling' started by Matthew32, 17 Mar 2019.

  1. Matthew32

    Matthew32

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    Bear with me, this is a long story:

    This the 5th time I've had this work done, and no body seems to know the cause. I have a bath mounted shower, which comes off a bath mixer tap which come from the floor. (THERES NO PIPES IN THE WALL). This was all originally fitted with new tiles after I moved in about 6 years ago...since then I've had to get it redone 5 times, and the same thing happens.

    The tiles are letting water through or moisture is building up between the tiles and the wall. I know this has happened as the wall shows damage of the side of the tiling where it meets the non tiled wall. There's no plumbing behind the tiles, the outside has been checked, and there’s no leaks above, and it's a tap mounted shower.

    With the first 4 times, the wall wasn’t tanked. Tiles were fitted directly to the plastered wall. Months after tiling, I can pull the tiles off by hand and the adhesive is still completely wet. The wall behind the tiles is all completely wet too. There’s no plumbing in the wall, and it’s not coming from the outside. I’ve had the wall checked for damp. There’s a folding out shower curtain which also isn’t letting water through. Once the tiles are off, the wall drys out within just a couple of days.

    It’s a ground floor, exterior wall, brick and plastered. I have noticed that all of the previous tilers have just tiled straight onto the plastered wall, no waterproofing or aqua board, just tiles straight into the wall.

    No body seemed to know the cause. I’ve had 4 different tilers, retile it and get the same result.

    The tiles and grout look perfectly fine but the wall is soaking underneath and the tiles Just pull off.

    Anyway, a year ago, I let the wall fully dry out again with no tiles on, and I finally had a proper job done. Different tiles, and the wall was fully tanked with sheet membrane (not a paint on one).

    A year on, and it’s happening again. I don’t how this is physically possible with a membrane liner on the wall.

    Please see pictures. I’ve included a photo of the original problem before tanking and now.

    The original problem:
    6A7EA3EB-F109-455B-80F6-29FA2F08DD24.jpeg

    Tanked with membrane and retiled:
    24D37AE4-9972-41E3-AB44-8598E8F73C7E.jpeg

    Now, a year later:
    B6A14DD2-8AF3-4FA1-A384-D2A4AF4FFD31.jpeg

    594DAA63-7E9F-41B4-9860-A0D50EF7C505.jpeg

    0D3C0F82-6479-4783-8223-C86D397F5500.jpeg
     
  2. foxhole

    foxhole

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    Looks like shower screen? (Or whatever that is) may not be correctly sealed at tile edge ?
     
  3. wwwebber

    wwwebber

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    Ground floor external wall. Screams penetrating or rising damp to me. How are things outside ? - broken drain ?, leaking pipe ?
     
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  4. Matthew32

    Matthew32

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    I’ve had it checked or damp. No pipes either. Also, when I’ve had tiles removed previously, the wall dries out in a day or two, and stays dry, even in bad weather.
     
  5. wwwebber

    wwwebber

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    Well the damp is coming from somewhere and if it is not from the bathroom side then it must be from outside. Damp will dry out when exposed to the air but will increase greatly when covered up - by tiles for example. I had a damp floor in my kitchen underneath the quarry tiles after I pulled them up, it however did dry out in a couple of days when exposed to the air.
     
  6. opps

    opps

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    It's a fold away shower curtain. I fitted one at my place when I did my bathroom.

    It looks like the same one I have

    http://www.outasight-vb.com/
     
  7. Notch7

    Notch7

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    maybe your plaster is susceptible to damp.

    certainly bonding with multifinish 2 coat plasters soak up water very easily.

    the first pic may indicate water sitting on the bath edge and soaking into the plaster.

    the later damage may be simply water splashing over the shower screen door / metal wall stop and running down.
     
  8. DIYnot Local

    DIYnot Local

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