1. Visiting from the US? Why not try DIYnot.US instead? Click here to continue to DIYnot.US.
    Dismiss Notice

Bathroom wall paint keeps cracking and peels off by shower

Discussion in 'Decorating and Painting' started by Matthew32, 5 May 2019.

  1. Matthew32

    Matthew32

    Joined:
    17 Mar 2019
    Messages:
    11
    Thanks Received:
    0
    Country:
    United Kingdom
    I feel like I've written about this a million times, but here goes....

    When I moved in my property 8 years ago, I had tha bathroom retiled and the bathroom wall replastered. It's an exterior brick wall in a victorian house.

    It then transpired the tiles were fixed directly to the plaster, with no membrane or waterproofing (it's a bath shower), so the tiles were leaking water.

    I've since had the wall tiled again, with a water proof membrane (sheet, not painted), and that problem is now fixed.

    However, over the past few years, I've had a persistent problem with the wall next to tthe shower, not holding paint, and bubbling/cracking shortly after it's painted. It just peels off with a scraper.

    Nothing seem to adhere to it. I've had a tile removed and the tiling checked to to make sure its not letting water through, and it's been checked for damp. I've redone and redone and redone the paint work over and over again, filled it, primed it, and painted it. I was using Matt emulsion, but even with bathroom paint, the same thing happens.

    Someone said to me it could be the salt in the plaster.

    There are no pipes in the wall, the shower comes from the bath taps which come up from the floor, I've had it damp checked, I've had the tiles installed with a membrane and rechecked. I've left it days and days before repainting again. Each time the paint cracks and buddles, and just chips off with a scraper.

    I'm at a lost, but need a solution. The only thing I haven't checked are waster pipes from the flat upstairs, that go through that wall at the top (pictured)

    Any ideas?
     

    Attached Files:

    Last edited: 5 May 2019
  2. gc1967

    gc1967

    Joined:
    18 Oct 2010
    Messages:
    113
    Thanks Received:
    22
    Location:
    Bedford
    Country:
    United Kingdom
    Its seems its just up the edge of the shower screen, are you sure the sealant up the inside and outside of shower screen frame is siliconed ?
    When you say you have primed it before what did you use ?
     
  3. Matthew32

    Matthew32

    Joined:
    17 Mar 2019
    Messages:
    11
    Thanks Received:
    0
    Country:
    United Kingdom
    The silicon is sound both sides of the screen. This is also the 3rd different screen I’ve had, and the problem has remained the same.

    I’ve tried a few different things when repairing... I’ve filled it first (so it looks smooth, as there’s several layers of paint), then primed with with Zinsser stain block primer, then painted it.

    I’ve also tried putting the Zinsser onto the wall first, then filled it, then painted it. Leaving over a day in between each stage. The cracking starts around the edges of filled area/where there’s no paint.

    If you look at the image of the wall with the plaster showing, where I’ve scraped the paint off, once I’ve repaired it one of the above methods, the cracking follows that outline each time.
     

    Attached Files:

  4. gc1967

    gc1967

    Joined:
    18 Oct 2010
    Messages:
    113
    Thanks Received:
    22
    Location:
    Bedford
    Country:
    United Kingdom
    Scraping down, priming with Zinserr, then filling, sand down and touch in all filler with Zinserr before apply top coats. To me looks like damp is affecting the paint.
     
  5. Matthew32

    Matthew32

    Joined:
    17 Mar 2019
    Messages:
    11
    Thanks Received:
    0
    Country:
    United Kingdom
    That’s exactly what I did last time
     
  6. DIYnot Local

    DIYnot Local

    Joined:
    3 Sep 2019
    Country:
    United Kingdom

    If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.

    Select the supplier or trade you require, enter your location to begin your search.


    Are you a trade or supplier? You can create your listing free at DIYnot Local

     
Loading...

Share This Page