Amtico instal over wunda UFH issues

Discussion in 'FAQ Section For Consumers' started by TJP, Apr 25, 2022.

  1. TJP

    TJP Active Member

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    Yes it’s completely random. Some areas well adhered, some the backs of the tiles have no adhesive at all. And seems really weird on a single tile you can get one half well bonded, then a crack in the screed, and on the other side no adhesion at all.
    They used ivc high temp adhesive, and for the bits already patched up karndean high temp adhesive (crossing the streams there are we with amtico flooring :)) - that adhesive seems to work better in this setting.
     
  2. TJP

    TJP Active Member

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    Now wouldn’t it be funny if your mate in Essex who had probs with renovate is the guy who fitted this job !? When anything goes wrong like this you wish you’d asked 50 more questions of the trades installing, but realistically as a consumer I should be able to rely on pros to do their jobs correctly.
     
  3. TJP

    TJP Active Member

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    Thanks, if we end up ripping up the whole lot and going again I’ll be asking for the mapei compound that has been tested / approved for use over wunda.
     
  4. Kevin Howitt

    Kevin Howitt Member

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    There should always be damp tests before fitting. I wouldnt have fitted the product until the heating had been commissioned. I,ve had problems before in fitting with the temp in the house being too low.
     
  5. TJP

    TJP Active Member

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    Thanks. Reading everything here it sounds like the most likely cause is the cold house during the install, and even though the temp was turned up slowly you’d imagine a fair bit of moisture to be trapped given the approach, and crack.
    Neither the fitter nor plumber seemed remotely concerned about the temperature in the house or the wait til a later date to commission the heating. I would have expected the fitter, given he’s covered everything in levelling compound and laid the floor on top to be more thorough, but then again he turned up not even knowing what a wunda ufh system is, and how it differs from other wet ufh systems, so seems to me he was winging it.
     

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