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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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    • CommentAuthormichaelf
    • CommentTimeDec 8th 2021
     
    I have recently moved into an 1800s house with solid brick built ground floor and a timber stud frame first floor walls that are tile hung.

    The lath and plaster is blown in places and I have done some initial investigations and the current structure appears to be as follows (from the outside) - Tiles, bitumen felt, mineral wool, lath and plaster, skim coat. The studs are 140mm deep.

    The tiles are in good order and so removing them to replace the bitumen felt, etc. would be costly prohibitive so I was planning to tackle this from the inside. My plan at this stage is to remove the lath and plaster, fix timber stop battens, install 90mm Kooltherm K112 (or similar) to leave a 50mm air gap to the felt/tiles and cover with insulated plasterboard with an integrated VCL.

    Does this sound like a sensible solution or am I potentially introducing issues with the timber structure? Is there a better/more cost effective way to do it?
    • CommentAuthormichaelf
    • CommentTimeDec 8th 2021 edited
     
    Here are a couple of pictures to give an idea of existing:

    Structure - https://ibb.co/8cTjDG2

    Insulation - https://ibb.co/d4Bv6tv
    • CommentAuthortony
    • CommentTimeDec 8th 2021
     
    There is no need to leave an air gap between the felt and the insulation for a wall, why it is different for a roof mystifies me.

    I would fully fill the void with quilt, tricky to well with sheet insulation then add a nice thickness of sheet insulation, an airtightness layer and plasterboard linings inside that. All joined up to roof/ceiling insulation, and down i between the floor void to downstairs.
    • CommentAuthormichaelf
    • CommentTimeDec 9th 2021
     
    Thanks for the response.

    Is there a particular quilt that you would recommend? Should I look for a breathable option?
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