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Discuss Suspended timber floor. Foam Vs HB/NMP/A-Panel in the Tiling Forum area at TilersForums.co.uk.

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  1. Waluigi

    Waluigi Professional Tiler Top Contributor

    Location:
    UK
    Standard suspended timber floor, regarding overboarding- do people consider the foam boards (wedi/Marmox/Jack0/Ducka etc) as good as the boards like Hardiebacker/NMP/Aquapanel etc.

    I’m asking this in relation to UFH and suspended timber ground floors where the insulating properties of the foam boards exceed those of the other boards.

    I’m assuming the 12mm foam boards aren’t a whole world different to the 6mm Hardiebacker boards.
     
  2. jcrtiling

    jcrtiling Professional Tiler TTA Member Top Contributor

    Location:
    Salisbury
    I 've asked harry hill about this and he says the only way to find out is fight !
    But seriously as far as insulation is concerned foam boards will beat cement boards every time
     
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  3. jcrtiling

    jcrtiling Professional Tiler TTA Member Top Contributor

    Location:
    Salisbury
    Just checking . If it's wet underfloor it would have to be cement boards if its electric undertile heating then foam
     
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  4. Waluigi

    Waluigi Professional Tiler Top Contributor

    Location:
    UK
    My mistake, yes absolutely it’s Leccy UFH.

    One thing I was wondering, I tend to use 12mm HB when laying natural stone. I’m wondering if 12mm foam board is good enough. I’m not entirely sure it is.
     
  5. jcrtiling

    jcrtiling Professional Tiler TTA Member Top Contributor

    Location:
    Salisbury
    Should be ok but I have seen some people recomend using ditra on top of elec ufh as well as using foamboard underneath .
     
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  6. pdc

    pdc Living the dream..... Professional Tiler

    Obviously foam board wouldn't add any structural rigidity to a timber floor in the same way a cement board does.
     
  7. Localtiler

    Localtiler Trusted Advisor Professional Tiler JOTM Winner

    Location:
    Yorkshire
    there’s no structural gains from a cement board, pdc, despite the feeling of solidness after it’s fitted.
     
  8. pdc

    pdc Living the dream..... Professional Tiler

    That surprises me Andy. I'd still rather use cement board on timber than a foam board, not that I've ever seen a timber floor over here!
     
  9. Plan Tec Tiling

    Plan Tec Tiling Administrator Staff Member Trusted Advisor Professional Tiler JOTM Winner

    Location:
    Wimborne, Dorset
    Foam boards allow very slight decoupling whereas cement boards dont
     
  10. Waluigi

    Waluigi Professional Tiler Top Contributor

    Location:
    UK
    Why are we still using Hardiebacker and the like instead of Foam boards on floors?!
     
  11. jcrtiling

    jcrtiling Professional Tiler TTA Member Top Contributor

    Location:
    Salisbury
    Most foam manufacturer's recomend minimum 10 mm on suspended floors where as cement boards are ok at 6mm . So height build up I guess
     
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    • Agree Agree x 1
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