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Insulated plasterboard and behind kitchen units

Discussion in 'Plastering and Rendering' started by Felics, 14 Jan 2020 at 7:51 PM.

  1. Felics

    Felics

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    Hi all,

    I'm new here so apologies if this post is somewhat repeated elsewhere (I can't seem to find the answer).

    So I am having a full renovation done on my house (walls being taken out, new plaster etc etc.).

    One of my bugbears in the past has been the outside walls being very cold (i.e. the front reception room and the room above).

    I've looked into some options and realised there are many different ways to insulate the walls internally. The builder has taken the walls back to brick and has mentioned a few options. Ideally I dont want to eat into the space of the room too much (let say 5-7cm at most). I've settled on the following method.

    1) New thin coat of sand/cement to the brick wall.
    2) Attach timber battens to the wall and back with DPM
    3) In between the battens, tightly fit 50mm insulation board (Kingspan foil backed etc.). Seal around the edges with foam and tape with electric tape.
    4) Over this, place a vapour control barrier
    5) 12.5mm plasterboard over this.

    I will also treat the outside of the brick with ronseal etc. The builder has said there is no evidence of damp.

    Does the above sound reasonable?

    Also, I am doing the same in the kitchen. My Q here was how will I hang the units and sink? Do I need to take anything into account when hanging rads and anything heavy?

    Thanks in advance.
     
  2. williamglossop

    williamglossop

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    Suppose u could screw a sheet of osb over the batons before the plasterboard. Either that, or plan your screw locations first , and make sure there are battens in those places.
     
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  4. williamglossop

    williamglossop

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    If its cavity wall, I wouldn't bother with all the vapour barrier and tape
     
  5. williamglossop

    williamglossop

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    And why bother with new render if you're gonna batten it out
     
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  7. Guitar_man

    Guitar_man

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    Batten it out with 10mm or so battens, drywall it with insulated plasterboard, job done :)
     
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