Wall preparation for 1m x 1m tiles

Discussion in 'Tilers' Talk' started by Sam365, Aug 11, 2018.

  1. Sam365

    Sam365 New Member

    Hi guys

    I'm tiling my bathroom with 1m x 1m x 12mm thickness porcelain tiles on to plaster which has been patched in places where it wasn't solid, old plaster seems solid enough, these tiles are really heavy,

    I've cleaned the walls of dust and given it a coat of plasterers pva grit, will that be good enough?

    If not can I put SBR on top of that pva grit or will I have to scrape it off and apply SBR,

    Also I want to tile on a stud wall out side of the bathroom - these are standard plasterboards, will that plasterboard be strong enough for me to tile on to, timbers are set at 450mm centres, or would you recommend replace with hardy backer boards?

    Any guidance & advice/tips would be much appreciated


  2. Sam365

    Sam365 New Member

    I forgot to mention I'm going to use a good quality flex tile powder adhesive
  3. CGN

    CGN Well-Known Member

    You'd prob be best to replace the lot with Hardie backer as you'll need a surface capable of carrying all that weight. Standard PB, can carry 32kg/m2 including adhesive and grout...how heavy are your tiles?

    Also, when you say PVA grit, do you mean blue grit?
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  4. KIAB

    KIAB Well-Known Member

    A darn lot of weight.
    Sam365 likes this.
  5. sospan

    sospan Well-Known Member

    I am thinking tiles that big (and expensive) even I would get a pro in.
    KIAB likes this.
  6. John.h.

    John.h. New Member

    Replace with something like jackoboard. Easier to use than hardie backer board

    Sam365 likes this.
  7. KIAB

    KIAB Well-Known Member


    And Jackoboard is one product I've never used.
    Sam365 likes this.
  8. John.h.

    John.h. New Member

    I boarded my own bathroom walls with Kerdi board. I used 1200x600 tiles.
  9. Sam365

    Sam365 New Member

    I've used blue grit, tiles are in a pack of 2 weighing 60kg so 30kg per tile,
  10. sospan

    sospan Well-Known Member

    30- 60 kg and around that size are municipal paving slabs that you find on a pavement.
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  11. Sam365

    Sam365 New Member

    They are expensive £42 a tile, I've really struggled to get a tiler, tilers I've got to come and look have turned the work down even though I'll pay them whatever they want, I just need it done, tricky job as there are so many cuts
  12. Sam365

    Sam365 New Member

    Many thanks for your time and guidance John, I've took your advice
  13. sospan

    sospan Well-Known Member

    Have you asked on https://www.tilersforums.co.uk/
    Sam365 likes this.

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