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Underlay for laminated floor with underfloor heating

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  • 25-02-2015 8:17pm
    #1
    tigershould
    Registered Users Posts: 545 ✭✭✭


    Hi, looking for some advice re: type of underlay / thickness of laminate for underfloor heating.

    The underfloor heating is pipes in screed. It's a new build.

    The builder is recommending a special underlay which looks like little polystyrene balls between two plastic sheets at €80 per roll.

    Another high street supplier claims that may be a bad idea since it will prevent heat rising and recommends to just go with basic 3mm foam at €25 per roll.

    I only need 2 rolls I think.

    I've read something about using cork but is this really necessary?

    I'm looking at 12mm laminate, with an AC3 rating. Do these ratings mean anything?

    All advice appreciated


Comments

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    #2
    frankmul
    Registered Users Posts: 375 ✭✭frankmul


    I think an underlay with a low u value is what you need. This allows the heat into the room quickly


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    #3
    Rabbo
    Registered Users Posts: 637 ✭✭✭Rabbo


    frankmul wrote: »
    I think an underlay with a low u value is what you need. This allows the heat into the room quickly


    I think you mean a low thermal resistance or low TOG value. A low u value would hold back the heat. There are underlays designed especially for underfloor heating eg: http://www.irishflooring.ie/product_info.php?products_id=5092

    The AC rating is very important, flooring with a low AC rating will get damaged with furniture easily. Aim for at least AC3, preferably higher.


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    #4
    tigershould
    Registered Users Posts: 545 ✭✭✭tigershould


    Thanks for replies (and for moving into correct forum)

    I did some research and it looks like builder is recommending Tuplex underlay. Seems good since it has some moisture protection over concrete.


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    #5
    tigershould
    Registered Users Posts: 545 ✭✭✭tigershould


    That's a good site Rabbo, thanks


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    #6
    Bad_alibi
    Registered Users Posts: 294 ✭✭Bad_alibi


    What are people's opinion on 2mm cork underlay used for screed floor with UFH


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