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  1. S

    Tiling concrete floor and UF heating

    Yes polished porcelain - what difference does that make ?
  2. S

    Tiling concrete floor and UF heating

    Thanks @The Tiler I did pull a bit of the floor up today where there is no underfloor heating to see what is happening - and as you say the underside of the XPS has not stuck to the adhesive but the adhesive is firmly stuck to the concrete floor Priming the underside of the board would have...
  3. S

    Tiling concrete floor and UF heating

    Yes as I said I followed the Tiler’s advice who said SLC wasn’t needed - cowboy tiler ! As for cutting if my new tiler is confident they can cut around the wire safely to remove dead spots then great if not will go ahead with tiling as it’s such a small area anyway Is there any way to drill...
  4. S

    Tiling concrete floor and UF heating

    Sorry one final question - assume that I should insist the tiler applies primer on SLC before tiling I know that’s what was advised above but just want to be 100% sure as there seem to be different views on this
  5. S

    Tiling concrete floor and UF heating

    Yes correct over 35sqm I have found approx 8 patches of about 15 cm square each where there is a slight movement due to air in there I will just ask whoever tiles it to cut these sections out without damaging mat before tiling The rest of the floor is sound and no point taking the whole lot...
  6. S

    Tiling concrete floor and UF heating

    All of Harry’s advice was followed and I went through it with the tiler and insisted they do this despite them suggesting skipping some steps I can assure you no corners being cut Before the job started the builder was going to put down SLC which would have cost me £250 more and I already...
  7. S

    Tiling concrete floor and UF heating

    Only the subfloor was primed and then top of the XPs - as you say this may be part of the problem
  8. S

    Tiling concrete floor and UF heating

    Thanks for the replies The hollow areas are local and in patches - when I stand on them and bounce up and down with my heel I can feel the XPS board slightly move and hit the concrete subfloor like a couple of mm but the XPs board heating mat and Slc are all firmly stuck together which I guess...
  9. S

    Tiling concrete floor and UF heating

    hi yes it was open to the elements for 2 nights as there was a door partly boarded and letting cold air in - also it was 10mm thick as it was quite an uneven floor
  10. S

    Tiling concrete floor and UF heating

    Hi Thanks for the replies Firstly I am definitely not doing this myself its too big a project - I have done a smaller area myself before though and did all the research hence wanting to ensure the tiler takes the right approach When I say 'I' it refers to getting the work done on my property...
  11. S

    Tiling concrete floor and UF heating

    Yes he is qualified but never used him before - just when I am spending £5000 I want to ensure job done properly so like to do my research
  12. S

    Tiling concrete floor and UF heating

    Thanks I am using keraquick do assume I need mapei primer g Also do I need to self level after putting down ufh as dont have much height to work with or can good layer of adhesive covering cables work ?
  13. S

    Tiling concrete floor and UF heating

    Hi all I am new to the forums and looking to get my kitchen diner floor tiled which is approx 30sqm The tiler is proposing following 1. Self level floor as old tiles were taken up and some of the adhesive is still present and not flat floor - Is this needed or can insulation boards just be...

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