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Backfill void under floating boards/no UFH

  • 25-07-2019 7:41am
    #1
    BoardsMember
    Registered Users, Registered Users 2 Posts: 4,528 ✭✭✭


    Hi all. I'm not a massive fan of UFH. Getting returb on house, original plan was to insulate under boards.

    While doing a pretty big job, my instinct is now telling me to rip up all the boards and back fill/insulate properly per architect or engineer spec.

    Reasons for it include getting a really good insulation layer that doesn't require lots of man hours and a precise job being done; there is a bit of dampness on one wall so we could get down and diagnose and remedy; there are some smells from time to time, feels like maybe some vermin dead down there, we've had mice on the past, it future proofs us against this and any other issue with the wood in future.

    So here's the question. Would we be mad to not do UFH while doing this? Seems like people usually do backfill like this in order to do UFH.


Comments

  • #2
    Calahonda52
    Registered Users, Registered Users 2 Posts: 12,888 ✭✭✭✭Calahonda52


    Tell us more about the insulation/airtightness/ventilation strategy/targets for the rest of the house?
    What is the heat source?

    Do you have time for it to dry out, maybe 6 months?

    “I can’t pay my staff or mortgage with instagram likes”.



  • #3
    BoardsMember
    Registered Users, Registered Users 2 Posts: 4,528 ✭✭✭BoardsMember


    Calahonda52 wrote: »
    Tell us more about the insulation/airtightness/ventilation strategy/targets for the rest of the house?
    What is the heat source?

    Do you have time for it to dry out, maybe 6 months?

    Hi, thanks for the response.

    It's a 1920s house, gas fired central heating, radiators. We wouldn't have time to dry it out, no. Is that an issue potentially.

    The aim with the rest of the house is to improve where we can, internal wall insulation on north facing walls (east is terrace, west is new 2 storey extension). New windows to rear and west, leaving current double glazing on front (cost). Improving attic insulation.

    Ventilation will be in wall vents I presume, still at planning stage so haven't got into detail with architect.

    We're very close to the wire on what we think costs will be, a very 2nd rate cheap alternative to addressing airtightness re floorboards was to put airtight membrane on top of existing boards, and new floors on that. No insulation I know, but would be a massive improvement on what's there now, very draughty.


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