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making windows airtight

  • 10-04-2012 9:11pm
    #1
    atlonglast
    Registered Users, Registered Users 2 Posts: 20 ✭


    My airtightness installer plans on doing the following around the windows - apply the tape and then drylining board is applied around the internal reveals so that the tape is hidden.
    As we are not drylining the walls, I am wondering has anyone got any other ways of making the windows airtight?


Comments

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


    imo generally correct tape (to window) to correct strip of membrane fixed to first coat plaster with mesh, plastered over.

    tell us more about this method - are we to presume that the the plaster board skim finish is providing the air-tight seal? prehaps you should put a clause in the contract regarding your air-tightness expectations and see does the proposed method change..


  • #3
    atlonglast
    Registered Users, Registered Users 2 Posts: 20 ✭atlonglast


    Sorry but I didn't understand your post- do you mean you scratch coat first and then put on the tape and then skim over that?
    In the way that has been mentioned to me, the airtight tape is providing the airtightness. The plasterboard is just to hide the tape from being seen where it sticks to the frame of the window.


  • #4
    BryanF
    Moderators, Home & Garden Moderators Posts: 10,146 Mod ✭✭✭✭BryanF


    atlonglast wrote: »
    Sorry but I didn't understand your post- do you mean you scratch coat first and then put on the tape and then skim over that?
    In the way that has been mentioned to me, the airtight tape is providing the airtightness. The plasterboard is just to hide the tape from being seen where it sticks to the frame of the window.
    a complete plaster coat is what provides air-tightness. so yes ideally plaster then apply membrane/tape then mesh to act as key surface/hold membrane in place then plaster finish that will be painted

    what is the tape fixed to ? how is the seal created between wall and tape?


  • #5
    gears
    Registered Users, Registered Users 2 Posts: 758 ✭✭✭gears


    There's a new tape for sealing windows from one of the main tape suppliers that is a little different and probably works out cheaper and easier to deal with.

    http://www.siga.ch/en/product-overview/detail-fentrim-2.html

    http://www.siga.ch/uploads/tx_gosigaproductdb/KM6644_GA_Fentrim_EN_01.pdf


  • #6
    atlonglast
    Registered Users, Registered Users 2 Posts: 20 ✭atlonglast


    BryanF, that seems to be what he's planning, but as the tape covers so much of the window frame he said most people put on the drylining board also to cover the tape.

    So I was looking for another option instead of using the drylining board to cover the tape.
    I will look into the new tape mentioned in the last post.
    Thanks


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