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insulation of basement

  • 07-02-2019 7:39am
    #1
    st1979
    Registered Users, Registered Users 2 Posts: 936 ✭✭✭


    I have just been to Germany where a friend is renovating a large house with a basement. I am surprised by the make up of the floor the architect is proposing. They are putting in underfloor heating.
    The make up is dpc, 150mm reinforced concrete, 100mm of pir board. Then underfloor heating pipes. With a 70mm liquid screed on top.
    There is also no break (insulation) between the screed and the old (very thick) brick walls.
    Is 100mm not a bit on the mean side. The architect says due to it being a basement the ground will never be very cold compared to ground floor. Which is a valid point.
    He also says if doing a very large industrial unit. They would only insulate the perimeter of the building. As that is where the frost is. And that the heat could not escape then. I taught it would escape downwards. But he seemed to think it would be caught there and give thermal mass.
    If I am honest I think he is talking BS


Comments

  • #2
    BryanF
    Moderators, Home & Garden Moderators Posts: 10,146 Mod ✭✭✭✭BryanF


    On large buildings here we still only insulate the perimeter


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