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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.

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General: Block and stone can they ever mix?

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  1.  
    • CommentAuthorandrewh
    • CommentTimeMar 22nd 2008
     
    Thanks for all of your advice about my place,I have also been recommended by a builder to chop the first floor off of my old knackered stone cottage and build a new blockwork off it to support a new roof(which is falling down) . Downstairs is really poor random rubble and upstairs is a patchwork of small sections of unsupported cob(rotten lintels below) and patched modern blockwork...really ugly

    He has recommended a concrete ring beam go above downstair's rubble wall with new modern blocks with cavity that support the new roof . Is it wise ? If so could you still use a lime render over the blocks as well as the stone below?

    Ever thankfull Regards Andy:wink:
    • CommentAuthortony
    • CommentTimeMar 22nd 2008
     
    Ring beam sounds like a good idea. Then solid walls with external insulation would be better - you will need to do upstairs to regs.

    Are you going to insulate externally on the ground floor?
  3.  
    You will most likely have to insulate the lower wall as working on more than 25% of any original wall area triggers insulation upgrades to all of it under Part L1B. A perfect opportunity to insulate externally as Tony suggests.
    • CommentAuthorandrewh
    • CommentTimeMar 23rd 2008 edited
     
    Thanks I have read the previous postings on external insulation. I understood some of it but they "speak in strange tongue", It reminded me of talking to the IT bloke about computers recently, lots of hapless nodding on my behalf.If it were your cottage which type of external insulation would be your preference?
    • CommentAuthortony
    • CommentTimeMar 23rd 2008
     
    I would go for 100mm minimum' preferably 200? expanded polystyrene. Any non organic sheet insulation will do. Then paper/mesh/lime render.
    • CommentAuthorandrewh
    • CommentTimeMar 23rd 2008
     
    many thanks Andy
    •  
      CommentAuthorrogerwhit
    • CommentTimeMar 23rd 2008
     
    timberframe top floor instead!
    • CommentAuthorandrewh
    • CommentTimeMar 24th 2008
     
    thanks for the advice I like the timber frame idea.

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