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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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General: Wot no DPM?

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  1.  
    • CommentAuthorcc64
    • CommentTimeApr 16th 2023
     
    Wot no DPM?
    Regular visitors here may have noted my travails to fix a failure of screen inside my entrance door, which broke over the fulcrum provided by an embedded mains gas pipe lying direct on the blocks of the beam & block ground floor.

    While cutting some XPS to reinstate some insulation I (suddenly, belatedly) realised I'd come across no DPM anywhere within this floor assembly. I was under the impression BC would insist on a DPM being in place. Am I mistaken?

    It doesn't seem to be a problem. The ground floor has been a (cheap) engineered wood for ages and no sign of damp has been seen
  2.  
    Beam and block floors here are suspended floors. If the floor is not suspended there is no need for beam and block and a solid concrete floor is used (often including rebar). So if your beam and block floor is suspended (which I suspect) then no need for a DPC.
    • CommentAuthorcc64
    • CommentTimeApr 16th 2023
     
    @PiH
    Yup, you're right - suspended.
    • CommentAuthortony
    • CommentTimeApr 16th 2023
     
    It might even be better without one as moisture could could condense on the warm side of a dpm especially if it is sat on something cold

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