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Discuss Tiling concrete floor and UF heating in the Tiling Forum area at TilersForums.co.uk.

  1. Andy Allen

    Andy Allen Metro specialist & forum entertainer! Trusted Advisor Professional Tiler JOTM Winner Top Contributor

    Location:
    Gloucester
    I know first hand priming certain surfaces using that adhesive reduces the bond strength considerably.
     
  2. jcrtiling

    jcrtiling Trusted Advisor Professional Tiler TTA Member Top Contributor

    Location:
    Salisbury
    So just had a chat with bal tech and they say no need to from their point of view but you could to slow the porosity of the board but you should check with the manufacturer . The guy was very non committal and ambiguous but at no point did he say do not do it . I also asked if it would be detrimental to the bond strength and he said no . I dont know if bal board is a lightweight board , i know it not cementitous but they recomend priming with apd
     
    Last edited: Nov 6, 2018
  3. Andy Allen

    Andy Allen Metro specialist & forum entertainer! Trusted Advisor Professional Tiler JOTM Winner Top Contributor

    Location:
    Gloucester
    Don't believe you...!

    Do you have photographic evidence of you on the phone to them, holding a copy of today's news paper, along with a tape recording of the conversation....!...:cool:

    Joking a part, if you had a failure on a job and primed the boards, I can guarantee, no, hang on , I can 25 year guarantee bal will blame that as it says in the pdf do NOT prime the board's...
     
    Last edited: Nov 6, 2018
  4. jcrtiling

    jcrtiling Trusted Advisor Professional Tiler TTA Member Top Contributor

    Location:
    Salisbury
    Yes you are right . But to be honest if was to have a failure I wouldn't bother contacting anybody well not so since my dealings with bal when they told the grey colour grout i had was in their parameters for limestone . They are just dishonest the lot of them
     
    • Agree Agree x 1
  5. Bond

    Bond TilersForums.co.uk Addict

    Location:
    Highland
    If the hollow areas are small and isolated, you could cut-out / core the insulation and pour in some slc mixed with SBR, which should fill in any voids.
     
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