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Discuss Shower bath tiling preparation: plaster and wooden windowsill in the DIY Tiling Forum area at TilersForums.co.uk.

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  1. A SMITH

    A SMITH Active Member

    Location:
    UK
    I'd appreciate your suggestions on preparation for tiling over my bath.

    Photo shows the old bath. The new bath will be in by the end of the week. The soil pipe will be boxed in to the width of the bath using Aquapanel, and a mixer shower and concealed bath valves will be attached to it.

    All three walls surrounding the bath, and around the window, will be tiled (DIY) with 75x150mm "farmhouse" ceramic tiles, 9mm thick, from the tub up to the ceiling. The wall at the head of the bath will only be tiled to the width of the bath.

    The old skim plaster is mostly still OK. There are a few patches where I've removed loose skim plaster. Some paint and tile adhesive from the 70s remains over the bath.

    The windowsill is solid wood.

    I'd like to start the tiling in the middle of next week at the latest, so I'm hoping I won't need to do anything that takes ages to dry.

    So my question is what should I do to prepare this mess for tiling - board the walls with Aquapanel or something? Tank the plaster directly? Some other solution?

    IMG_20170418_182336449.jpg
     
  2. Plan Tec Tiling

    Plan Tec Tiling Administrator Staff Member Trusted Advisor Professional Tiler JOTM Winner Top Contributor

    Location:
    Wimborne, Dorset
    Remove all paint and old adhesive using a 4" blade scraper. Remove any loose plaster and ensure the wall is reasonably flat.

    That wooden window board is in the shower zone and destined to rot. Look to remove the window board and replace with a waterproof board and tank all shower walls. Avoid aquapanel as it is water resistant, not waterproof. This goes for the soil pipe also.
     
  3. pdc

    pdc Living the dream..... Professional Tiler

    The soil pipe is waterproof surely?
     
    • Like Like x 2
  4. Plan Tec Tiling

    Plan Tec Tiling Administrator Staff Member Trusted Advisor Professional Tiler JOTM Winner Top Contributor

    Location:
    Wimborne, Dorset
    Hahaha, Yes, but the wall behind it, the batons and the floor beneath it isn't. Unless you know different? I was of course referring to the soil pipe boxing in my first post!!!
     
    • Funny Funny x 1
  5. pdc

    pdc Living the dream..... Professional Tiler

    My sarcasm gene has a mind of its own..
     
    • Funny Funny x 1
  6. A SMITH

    A SMITH Active Member

    Location:
    UK
    Thanks for this. Surely tanked aquapanel is as waterproof as tanked plaster, though?

    What's the more-waterproof alternative?
     
  7. Plan Tec Tiling

    Plan Tec Tiling Administrator Staff Member Trusted Advisor Professional Tiler JOTM Winner Top Contributor

    Location:
    Wimborne, Dorset
    It is, but only you can decide if the walls require overboarding of not. My advice would be to use normal plasterboard in the corner over the soil pipe and tank everything. Cheaper, easier to purchase and will be just as water tight (if done correctly)
     
    • Agree Agree x 1
  8. Kevbos

    Kevbos TilersForums.co.uk Addict

    The room is not a wet room .does not need tanking .unless you have a solution to bridge it onto bath. Where it leaks .just make sure tiles are stuck with good adhesive .and grouped well .and silicone all joints internal etc in wet areas .then look after the tiles and silicone. Nothing lasts forever .
     
    • Disagree Disagree x 4
  9. Kevbos

    Kevbos TilersForums.co.uk Addict

    Most leaks are around bath or shower tray edges .or from pipes etc leaking .
     
  10. Paul C.

    Paul C. Professional Tiler

    This has got to be a joke, right? Using your method, damn right it won't last forever!

    Grout is not waterproof (unless you insist on using epoxy), adhesive is not waterproof no matter how "good" it is, plaster and plasterboard also not waterproof. And you're advising not to tank it??? Moisture will still be getting to the background no matter how much silicone you put on the internals!

    The only difference between this and a wet-room is the base. Its still an intermittent wet area. Water is still hitting the walls. There is still a high level of humidity and condensation. Its not all about leaks, there should be as much care in protecting the substrates as there is in filling in the gaps. Stop giving bad advise. You'll be telling him to spot fix it next!

    @A SMITH@A SMITH , stick with the advise from @Plan Tec Tiling@Plan Tec Tiling and if anyone tells you not to tank it, ignore them.
     
    • Like Like x 3
  11. Kevbos

    Kevbos TilersForums.co.uk Addict

    It is a bath area .it is not subject to sustained amounts of water .most bathrooms shower area etc only have problems when water gets past weak points .these are areas where grout will crack etc .90 per cent of damage done in these areas results from water passing through edges of baths. Shower floor or tray areas .are you being purposely blind to this .a wet room is a room in which everything is tanked into a drain..once again read what I write .how can you tank a wall onto a bath edge.
     
  12. Kevbos

    Kevbos TilersForums.co.uk Addict

    I have tiled for wb Simpson's. Stone and ceramics .the tiling company .on massive construction and house building sites .most this work was not tanked before tiling .tanking is a waste of time if whole room is not tanked into a drain.
     
  13. Localtiler

    Localtiler Trusted Advisor Professional Tiler JOTM Winner

    Location:
    Yorkshire
    Kev your waffling a load of rubbish again.

    The best bet is to tank the walls down to the floor, then fit the bath, so it's all water proofed around this weak point you keep going on about
     
  14. Kevbos

    Kevbos TilersForums.co.uk Addict

    Disagree all you like .a wet room or properly tanked room can only work properly if whole room done .
     
  15. Kevbos

    Kevbos TilersForums.co.uk Addict

    Your just moving water to floor then what ?
     
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