Screeding over underfloor heating wires

Discussion in 'Wood' started by Stewarsylar, May 29, 2017.

  1. Stewarsylar

    Stewarsylar Member

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    Hi guys got an LVT click job to do the customer has got exposed ufh electric wires could I screed over them?
    Also it is a wood floor
    Any recommendations
    IMG_4643.JPG


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  2. dazlight

    dazlight Super Moderator

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    Yes mate. Screed over them , might need 2 coats though as some wires will rise in the screed.


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  3. Spacey

    Spacey Super Moderator Staff Member

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    You have to screed over no matter what's going down It must be encapsulate to function correctly or it will over heat and burn out
     
  4. Stewarsylar

    Stewarsylar Member

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    They had a real wood floor on top of it before !!!


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  5. Spacey

    Spacey Super Moderator Staff Member

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    :eek:
     
  6. Stewarsylar

    Stewarsylar Member

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    So fballs 700??


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  7. Spacey

    Spacey Super Moderator Staff Member

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    Most smoothing compounds are suitable are suitable probably better with a fibre reinforced or NA or 1200 tho
     
  8. Distinctive Adam

    Distinctive Adam Well-Known Member

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    Click lvt may fail on ufh
     
  9. Rich Hughes

    Rich Hughes Member

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    Did one like this last year needs at least 12mm of flexi screed we did it in two coats first coat to cover wires then second coat up to the 12mm look about 6mm to cover wires then used pin leveller so we new we was at correct depth


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  10. Rugmunching

    Rugmunching Well-Known Member

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    Had this many times, 2 separate coats of NA. Was roughly 12mm by time id finish.
    Had one that I refused to do for a shop due to the original floor reading potential damp and they wanted me to crack on with it so walked away.
     
  11. dazza

    dazza Well-Known Member

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    Wood flooring can be installed straight over it with an underlay underneath. If lvt click going down you need to pour fibre screed over I normally use renovation from mapei but need to prime first then use a spiked roller then put a second coat down about 4 MM after . and don't use a pin leveller or rake ! As the wires will still be showing on the second coat and it doesn't take much to break them.
     
  12. dazza

    dazza Well-Known Member

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    Not with wood flooring you don't. But looking at the picture it will burn out due to the wires being to close together.
     
  13. Stewarsylar

    Stewarsylar Member

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    Thanks guys did as advised all finished now


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  14. Spacey

    Spacey Super Moderator Staff Member

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    Yes you do I have it on good authority
     
  15. frazer hipkiss

    frazer hipkiss Active Member

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    Try Heather Pak boarding?
     
  16. frazer hipkiss

    frazer hipkiss Active Member

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    Heat pak!
     

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