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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.
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Products: Knauf DriTherm 32 or Isover Hi Cav 32

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    • CommentAuthorwoodgnome
    • CommentTimeSep 30th 2013
     
    Supplier asked to supply Isover Hi Cav 32 instead of Knauf Earthwool DriTherm 32 cavity insulation.
    Both same U values, both approved for full fill cavity in all exposure zones etc,, but the Knauf has a 50 yr guarantee. I won't be around in 50 years, but Knauf obviously have faith in the product.
    Anyone used the Isover stuff?
    Waiting for prices at the minute.
    Thanks.
    • CommentAuthorowlman
    • CommentTimeSep 30th 2013
     
    Posted By: woodgnome..................., but the Knauf has a 50 yr guarantee. I won't be around in 50 years .

    Probably neither will most of us on this forum, maybe Knauf too. Maybe that's why they can give this great?? guarantee.
    Sorry, that's just the cynic in me.:wink:
    • CommentAuthorwoodgnome
    • CommentTimeOct 1st 2013
     
    Owlman...i agree with you.
    But wondering what may happen if i get some water ingress in 10 years time...
    Isover will save me about £750 compared to the DriTherm.
    Waiting for some more prices later today.
  4.  
    used both , no obvious difference I'm aware of . Isover felt denser, brickie prefered as they didn't push light weight blocks out as much when laying.
    • CommentAuthorwoodgnome
    • CommentTimeOct 4th 2013 edited
     
    Thanks, i can get the Isover £2.15 m2 cheaper than the DriTherm 32.

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