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Green Building Bible, Fourth Edition
Green Building Bible, fourth edition (both books)
These two books are the perfect starting place to help you get to grips with one of the most vitally important aspects of our society - our homes and living environment.

PLEASE NOTE: A download link for Volume 1 will be sent to you by email and Volume 2 will be sent to you by post as a book.

Buy individually or both books together. Delivery is free!

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    I am considering how best to insulate the reveals to my large patio door. Wall is standard cavity construction filled with Dritherm32. The cavity closers provided by builder look fairly useless in terms of achieving a tight fit and maintaining airtightness. The hard plastic looks to be a hindrance as it will sit proud of the wall. My idea is to remove the foam inner, wedge into the cavity and tape the either side. Then attach insulated plasterboard over top. Does this sound sensible?

    The inner blockwork will be wet plastered for airtightness in the rest of the room.
    • CommentTimeJun 2nd 2021
    Airtightness: Tape to the windows, then tape or membrane to connect with the wet plaster?
    Insulation, whatever meets thermal & fire requirements.
    Would a Marmox type board work better here than insulated plasterboard? Taping yes. I have the wide Contega tape so it will almost be easier to tape 2 layers to span the gap than to install a membrane.
    • CommentAuthortony
    • CommentTimeJun 2nd 2021
    I like using insulated plasterboard fully bonded on, I stick the insulated plasterboard to the frame using acrylic sealants. Make sure the cavity is fully full of insulation. Then use wide wet plaster angle beads to cover the edge of the insulation on the main wall.
    • CommentAuthortony
    • CommentTimeJun 2nd 2021
    For the OCD foam sheet insulation in as a cavity closure perfectly in line with the block/back of the frame
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