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How the hell do I insulate a concrete floor?

Discussion in 'Floors, Stairs and Lofts' started by John2016, 29 Jan 2019.

  1. John2016

    John2016

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    Hello,

    My parents recently moved into a five year old house, where the ground floor is concrete with lino on top.

    Now the ground floor area does get really cold in the winter, but I think that it because all of the heat from the radiators is taken away from the floor.

    What method can I use to make the floor warner without needing to replace the skirting boards?


    Thanks.
     
  2. JobAndKnock

    JobAndKnock

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    One immediate fix might be to lift the carpets, lino, etc and lay cork flooring onto the concrete then relay the original flooring. If the floor is showing any signs of damp it would be advisable to coat the concrete with a layer of liquid DPM before you lay the cork. I laid cork flooring in my kitchen (stone flags with a cement render applied on top) and it has made a substantial difference - on cold mornings I can walk across it without the need for slippers these days
     
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  4. John2016

    John2016

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    Thanks, never thought of cork.

    How many mm this you use?
     
  5. motorbiking

    motorbiking

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    It should have at least a 50-100mm polystyrene slab in the concrete, so its really about making it feel warmer rather than stopping heat loss.
    Apart from the above and carpet, you also have the option of thermal underlay under a laminate or wood floor.
     
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  7. JobAndKnock

    JobAndKnock

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    Ours is about 8mm thick. It really isn't about making the floor warmer, but a bare foot standing on a piece of cork loses a lot less heat than a bare foot placed directly on a stone slab. Did some temperature checks with a cheapo (LiDL) IR temperature sensor (top of our cellar steps in the kitchen is still stone, no insulation) earlier this morning (outside ground temperature -3°C) and there was no difference in the actual surface temperature between the two (12.8°C). Either way the cork certainly feels warmer
     
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