1. Visiting from the US? Why not try DIYnot.US instead? Click here to continue to DIYnot.US.
    Dismiss Notice

Can I Stuff Insulation Into This Flat Roof?

Discussion in 'General DIY' started by ILikeDIYS, 26 Nov 2020.

  1. ILikeDIYS

    ILikeDIYS

    Joined:
    4 May 2016
    Messages:
    245
    Thanks Received:
    4
    Country:
    United Kingdom
    Hi, I will be over boarding my Artex ceiling with plasterboard soon but first was wondering if I could cut long rectangles out in the original ceiling and stuff mineral wool in between the joists as the ceiling is very high and room can't retain any heat (dissipates straight through the roof)?

    Pictures of ceiling and roof:
    Note: It's not a flat-flat roof but a sloped one. Construction is plasterboard > joists > perlins > corrugated bitumen sheets.

    I found some insulation up there already but it's literally a couple pieces here and there... I want to stuff it more dense so it actually becomes insulated.

    Thanks.
     
    • Thanks Thanks x 1
  2. Sponsored Links
  3. foxhole

    foxhole

    Joined:
    14 Mar 2006
    Messages:
    17,993
    Thanks Received:
    2,064
    Location:
    Kent
    Country:
    United Kingdom
    Is it a garage?
     
  4. ILikeDIYS

    ILikeDIYS

    Joined:
    4 May 2016
    Messages:
    245
    Thanks Received:
    4
    Country:
    United Kingdom
    lol it's my bedroom. House is bloody cold just wanna make it hold heat in better.
     
  5. wgt52

    wgt52

    Joined:
    25 Apr 2016
    Messages:
    1,249
    Thanks Received:
    239
    Country:
    United Kingdom
    I can certainly believe that your room will be very cold with the bitch. sheets as a roof.
    How deep are the Joists? What ventilation is there to keep the woodwork dry? How worked (rippled or swirled) is the artex? How old is the artex?

    Me - with sufficient headroom I'd be thinking about 50 or 100mm PIR insulation straight onto the underside of the artex, vapour sealed and then covered with plasterboard, skimmed or papered.

    You could also insulate the walls in a similar fashion.
     
    • Like Like x 2
  6. Munroast

    Munroast

    Joined:
    17 Aug 2010
    Messages:
    1,786
    Thanks Received:
    264
    Country:
    United Kingdom
    I was going to do something like this in my mothers house, she is in a top flat with a flat roof above her, I wanted to stuff the void between ceiling and roof with rockwoll. I was advised against this due to thermal gradients, condensation, and timber rot. Apparently the way to do it is insulate the roof from above.

    If you are going to board-over you ceiling and replaster - why not use an insulation board may be an inch of polyurethane bonded to plasterboard (this sort of stuff) - that would make a difference. Depends how much you can lower your ceiling, it will start to feel claustrophobic if you can reach up and touch it.
     
  7. foxhole

    foxhole

    Joined:
    14 Mar 2006
    Messages:
    17,993
    Thanks Received:
    2,064
    Location:
    Kent
    Country:
    United Kingdom
    Never heard of habitable room with such a poor roof covering, is it a chalet property.?
     
  8. this
     
  9. DIYnot Local

    DIYnot Local

    Joined:
    3 Sep 2019
    Country:
    United Kingdom

    If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.

    Select the supplier or trade you require, enter your location to begin your search.


    Are you a trade or supplier? You can create your listing free at DIYnot Local

     
  10. Sponsored Links
Loading...

Share This Page