Heat from new ufh - How long to warm through

Discussion in 'FAQ Section For Consumers' started by Julie Fox, Nov 28, 2022.

  1. Julie Fox

    Julie Fox Member

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    Hi,

    We have Thermosphere wire under 40mm of screed with floorboards laid over.
    We turned on heating for first time 4 days ago starting at 18degrees. Today at 23 but still not feeling really any warmth. Is there something wrong?
     
  2. Julie Fox

    Julie Fox Member

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    Amtico being fitted over 5mm ply next week, worried will not get any heat through…
     
  3. Rugmunching

    Rugmunching Well-Known Member

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    Good luck with that!

    So you've had the 150w or 200w matting with wire/or lose wire laid near 60mm deep???
     
  4. Rugmunching

    Rugmunching Well-Known Member

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  5. Julie Fox

    Julie Fox Member

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    followed the instructions? Needed the original floor level to hallway.
    Wire had to be minimum screed depth
     
  6. Rugmunching

    Rugmunching Well-Known Member

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    What is the actual make/version of your thermosphere ?
     
  7. Rugmunching

    Rugmunching Well-Known Member

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    Should only need 10mm if it's the cable I'm thinking of
     
  8. Julie Fox

    Julie Fox Member

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    Hi, it’s the Thermosphere screed cable
     
  9. Julie Fox

    Julie Fox Member

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    Installation says for use in 40-100mm screed depth
     
  10. dazlight

    dazlight Super Moderator

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    Not seen that Electric UFH type. But all the wire ones I’ve gone over aren’t good enough to heat a room. Just warm the floor.
     
  11. Rugmunching

    Rugmunching Well-Known Member

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    Just had a quick read and yes it does state 40 - 100mm, what was the reason for using that actual system?

    Wouldn't a standard mat system been a better choice?
    I do so many of these ufh installations but even on the 80mm fresh slab I run the mats at a separate layer of 20mm (thermo board, ufh matting and 10mm of screed)
     
  12. merit

    merit Well-Known Member

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    Well at least it won’t frazzle your floor. But you will never heat a room with this type of system. You can’t really feel much warmth on a floor thats heated to 27 degrees.
     
  13. Paul webb

    Paul webb Well-Known Member

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    Possibly would have been better with just screed and no floorboards, also, I'm not sure if there will be issues with the floorboards when you cover them up, as you will be heating them up and they won't be getting any moisture from the air
     

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