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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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  1.  
    I'm renovating some old cast iron radiators. I will need to resize them, so will definitely need new gaskets. Paper gaskets seem to be more reliable than EPDM, graphite, or paste as they resist degradation caused by excess alkalinity. I've seen some, but there is a suggestion they also need to be soaked in linseed oil. Does anybody have any experience with this type of gasket?
  2.  
    Only on motor bikes where I used to grease the paper gaskets before assembly. A tip handed on by older bikers.
  3.  
    https://www.amazon.co.uk/Gasket-Paper-Radiators-25-Washers-Gripp/dp/B019GTUSNY

    See the comment in the review section.
  4.  
    Posted By: Peter_in_HungaryOnly on motor bikes where I used to grease the paper gaskets before assembly. A tip handed on by older bikers.

    Thanks @Peter. I agree, presumably the grease / oil helps protect the gaskets when being fitted, and stops the liquid from seeping through the paper.
    • CommentAuthorLF
    • CommentTimeFeb 19th 2021
     
    Sounds like you are on the right track
    How thick the paper gasket is depends on how rough and "unflat" the surface. The link was 0.5 mm which is pretty thin - but it is not a lot of pressure to seal.

    I did not know cast iron rads had gaskets - so went to google, found interesting write up.

    This says use paper type (non asbestos fibre NAF)

    https://www.castironradiators.ltd.uk/gasket-research-165-w.asp
  5.  
    Thanks @LF. Yes, I think I'll need to write to a couple of gasket companies to see what they advise. I've found a few links.

    However, in the meantime I'm struggling to get some of the old bushes off. I'm probably going to need to take it to a garage or metal worker with a proper blowtorch.
  6.  
    I've repurposed several old cast iron rads. To get the original bushes off, I've found the following solution works well:

    Step 1: Lay rad flat on floor
    Step 2: Tighten a whopping great pipe wrench onto bush, at a reasonable angle to allow you to;
    Step 3: jump on wrench
    Step 4: repeat steps 2-3, until loosened

    Worked for me anyway.:bigsmile:
  7.  
    Thanks @Chris! You're right, the pipe wrench is the best for gripping the bushes. I had not appreciated that. I quickly managed to get another one off this evening before it got dark. I used a medium sized pipe wrench and a length of scaffold pole. I now have a joining / splitting set too, though the smallest key seems slightly too large for the nipples. I'm wondering if corrosion has reduced the size of the nipples?
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