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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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      CommentAuthordjh
    • CommentTimeJan 14th 2021
     
    Posted By: Peter_in_HungaryWith brick slips probably north of 12 GBP /m2 plus labour the cost would not be insignificant for that side wall.

    Agreed. It's not me that sees an aesthetic necessity.
  1.  
    >>>"Chimney is internal - does EWI not just go over it or does it need some special detail ?”

    This is a problem area with retro fit EWI on gables, it doesn't join onto the loft insulation. So 'cold' flows from the loft airspace, down through the masonry of the chimney and gable wall, inbetween the loft insulation and the EWI, and down into the warm envelope. This makes a cold patch along the ceiling line of the inside of the gable wall which risks condensation.

    A previous thread on this turned out that more 'cold' would flow into the house through this cold bridge, than through the wall itself.

    Likewise it's difficult to connect the EWI to the under-floor insulation, or to any IWI on the front wall, so there are cold walls along those corners too.

    Best solution IMO is to EWI the whole house and up over the tops of the gables onto the roof, or IWI the whole house inside, but not mix/match EWI with IWI.

    We went for total IWI on our last 19thC house for reasons including heritage, DIYability, cost, reversibility, and thermal continuity, and didn't miss the minor loss of inside space in exchange for much improved comfort. On our current 19thC house we might eventually go for EWI, as it has already been rendered outside. Horses/courses.
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