1. Schluter and U

Discuss 600x900 limestone floor in the Stone Tiling Forum area at TilersForums.co.uk.

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  1. dchtilingnorthwest

    dchtilingnorthwest Active Member

    Location:
    northwest
    Hi all i am looking for some advice on the best adhesive to use on a floor which has a water fed underfloor heating system.
    The total area is 150m but this is divided into 4 separate areas so is not one big area.

    Customer has been advised to use a 2 part adhesive but I am wondering if this is absolutely necessary? Any advice much appreciated.
     
  2. callatiler

    callatiler Professional Tiler JOTM Winner

    Location:
    Aberdeen
    Is it a screed floor? As long as you use uncoupling mat a cement based flexible adhesive is fine.
     
  3. dchtilingnorthwest

    dchtilingnorthwest Active Member

    Location:
    northwest
    the system is laid into some kind of pre-moulded blocks and I was wondering whether these would therefore eliminate the matting? If not any advice on the cheapest place to buy the matting as i've just had a quote of £1500 for 150m.

    Thanks you
     
  4. callatiler

    callatiler Professional Tiler JOTM Winner

    Location:
    Aberdeen
    After the pipe work was laid did they lay a screed over them?
     
  5. dchtilingnorthwest

    dchtilingnorthwest Active Member

    Location:
    northwest
    No, there is no screed.....
     
  6. callatiler

    callatiler Professional Tiler JOTM Winner

    Location:
    Aberdeen
    No matter what you will need uncoupling mat, too much movement in stone with heat, I buy 30 metre rolls from my local CTD for £200 is there one near you?
     
  7. dchtilingnorthwest

    dchtilingnorthwest Active Member

    Location:
    northwest
    yes I use CTD also....thank you. Would you say screeding prior to matting is absolutely necessary? Usual scenario where the money is running out towards the end of the job but I just want to make sure its right.
     
  8. callatiler

    callatiler Professional Tiler JOTM Winner

    Location:
    Aberdeen
    Never seen this pre formed block thing so if you think they are stable enough prime and cement based flexi adhesive matting down, if not slc then matting
     
  9. dchtilingnorthwest

    dchtilingnorthwest Active Member

    Location:
    northwest
    Its this here. polypipe overlay and it says can be tiled straight onto....
     
    • Optimistic Optimistic x 1
  10. callatiler

    callatiler Professional Tiler JOTM Winner

    Location:
    Aberdeen
    If it says that then probably means ceramic or porcelain so since you are laying stone then straight on with matting
     
    • Like Like x 1
  11. Kevbos

    Kevbos Active Member

    It's probably hardebacker board with the grooves in for pipework hence the look of preformed blocks ..use the 2 part adhesive
     
    • Like Like x 1
  12. JulianSidney

    JulianSidney Trusted Advisor Professional Tiler Top Contributor

    Location:
    ramsey, essex
    its a broken link , can you redo or name the product
     
  13. Localtiler

    Localtiler Professional Tiler Top Contributor

    Location:
    Yorkshire
    I would do some propper research into this there has been numerous threads on how to tile onto these polly pipe type floors, i don't believe it's as simple as lay a mat and tile it. Are the tiles thick, 20mm?
     
  14. Tom Astley

    Tom Astley Professional Tiler

    I have tiled straight onto polypipe boards with single part flex - no comebacks yet and this was 18 months or so ago but for stone, I would seek further advice about some kind of fracture mat.
     
  15. Mikephillips85

    Mikephillips85 TOTAL TILE

    Location:
    Wirral
    I fixed 600x600 travertine onto polypipe overlay board over 10 years ago in my brothers house not a single hairline crack to be seen so it is possible but its about belts and braces now too many failures cover your back
    Good luck
     
    • Like Like x 1
  16. peteablard

    peteablard Trusted Advisor Professional Tiler

    I tiled over the Polypipe system a couple of times about 3-4 years ago. Decoupled and used Weber rapid spf with no problem. Fixed marble on both jobs
     
    • Like Like x 1
    • Agree Agree x 1
  17. SJPurdy

    SJPurdy Professional Tiler

    Beware that the size of one or more of your 4 floors might be at or above the limit for a heated floor without intermediate movement joints.
     
  18. Kevbos

    Kevbos Active Member

    Just find out name of the heating and the boards used .look up their tech phone numbers .sol to both see what they advise .get them to send specifications and give to customer .let them make decision for you .problem solved
     
  19. Kevbos

    Kevbos Active Member

    I tiled on this system end of last year .wunda under floor heating boards Maori 2 part adhesive as specified .the tiles still cracked and broke everywhere. But I done specifications to the letter

    20161019_103549.jpg
     
    • Silly (-) Silly (-) x 1
  20. Tom Astley

    Tom Astley Professional Tiler

    The solid bed theory doesn't look like it was done to the letter?
     
    • Agree Agree x 6
    • Funny Funny x 3
    • Like Like x 1
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