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Insulating external wall

Discussion in 'Building' started by Daljit, 10 Dec 2016.

  1. Daljit

    Daljit

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    Hi

    I'm renovating my bathroom and I'm interested in insulating two exteriors walls. The house was built 1920s and currently the walls are plaster & lath. The bathroom is on the first floor.

    The bathroom is quite small and I'd rather keep the loss of internal space to a minimum.

    I'm thinking that I could remove the lath & plaster from the two external walls, leaving the brick external wall exposed. I would then fix an insulated plasterboard to this wall, of at least 50mm thickness. To finish, the board would be taped and skimmed.

    Am I on the right lines? Can I attach the insulating board by dot & dab method? Should I need to be thinking about leaving a gap between the external wall and the insulating boards? Do I need to use a damp proof membrane or foil covered boards?

    Thanks in advance.

    Daljit
     
  2. Are you sure that you have lath & plaster on the external walls?
     
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  4. ^woody^

    ^woody^

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    Yes you are on the right lines. Ensure to use the correct adhesive for the dabbing, and you don't need a damp membrane.
     
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  5. endecotp

    endecotp

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  7. Daljit

    Daljit

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    Thanks for responses. I'd never heard of acquapanels before! Also found the link to Historic England given on a related thread v useful.

    Cheers
     
  8. DIYnot Local

    DIYnot Local

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