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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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  1.  
    Chased the walls out for my 10mm plastic pipe runs and the plasterer just went ahead and bonded straight over without the trunking I had ready.

    He has now skimmed over it...

    Will it crack?? Any ways to prevent it doing so?

    As you can imagine I'm a bit annoyed but will be a lot of mess to try and get at them now...
    • CommentAuthorMarkyP
    • CommentTimeNov 3rd 2017
     
    would have helped to have scrimmed over the bonding over the pipe runs before the finish skimming. Better still to have capped the chases before basecoat, and then scrimmed over the base along those runs. If it does crack, try using wide scrim tape then two passes of joint filling compound feathered out and sanded.
  2.  
    Okay, I'll keep an eye on it. How long to dry out roughly before I can apply the heating?
    •  
      CommentAuthordjh
    • CommentTimeNov 3rd 2017
     
    With plastic pipe, make sure you know exactly where they are in the wall. It would be all too easily to hammer a nail in or drill a hole in a few years. Not that copper pipes are immune to nails mind you.
    • CommentAuthortony
    • CommentTimeNov 3rd 2017
     
    lining paper if it cracks which is unlikely
    •  
      CommentAuthorfostertom
    • CommentTimeNov 3rd 2017
     
    Posted By: VictorianecoChased the walls out for my 10mm plastic pipe runs
    Are these a zigzag of wall-heating pipes? My guess is you'd soon see some kind of regular pattern, whether cracks or discolouration, unless the pipes were mechanically isolated from the plaster. On the other hand, the pipes need embedment rather than air-surround, in order to conduct heat into the wall.
  3.  
    No zig sags. Just the drops for my rads...
    • CommentAuthorMike1
    • CommentTimeNov 3rd 2017
     
    Posted By: djhWith plastic pipe, make sure you know exactly where they are in the wall. It would be all too easily to hammer a nail in or drill a hole in a few years. Not that copper pipes are immune to nails mind you.

    FWIW, NHBC require concealed plastic pipes to be marked with metallic tape for detection in the future, preferably fixed to the wall behind the pipes - and only adhesive fixed if the tape is supplied by the pipe manufacturer and compatible with the pipe.
    •  
      CommentAuthordjh
    • CommentTimeNov 3rd 2017
     
    Posted By: Mike1
    Posted By: djhWith plastic pipe, make sure you know exactly where they are in the wall. It would be all too easily to hammer a nail in or drill a hole in a few years. Not that copper pipes are immune to nails mind you.

    FWIW, NHBC require concealed plastic pipes to be marked with metallic tape for detection in the future, preferably fixed to the wall behind the pipes - and only adhesive fixed if the tape is supplied by the pipe manufacturer and compatible with the pipe.

    Just as well NHBC isn't a legal requirement in the present situation then! Personally I'd go for expanded metal in the plaster above the pipe to protect it a bit as well as identify it and help stop the plaster cracking.
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