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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.

Buy individually or both books together. Delivery is free!

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    • CommentAuthorblubb
    • CommentTimeSep 22nd 2023
    Dear Forum,

    for EWI insulation, what are the pros and cons of
    a) insulating over the externally running gas pipe after protecting it by a larger diameter steel pipe rather than
    b) extending the gas pipe to run on top of the insulation?

    My kneejerk reaction is that b) is a poor choice because the copper pipe will act as a cold bridge and because due to thermal expansion outside of the insulated envelope it is more likely to develop a leak.


    Many thanks!
    Check the gas regs. first. Over here you are not allowed to cover a gas pipe with insulation.
    • CommentAuthorrevor
    • CommentTimeSep 24th 2023
    I would think that the pipe would need to be accessible and if enclosed there is a chance a leak my creep indoors.
    I have observed gas pipes going up to say 1st floor of a building and are covered by a capping part way presumably to deter vandalism. That is what I think common sense would dictate.
    • CommentAuthorblubb
    • CommentTimeOct 5th 2023
    Thanks everyone.

    It turns out the building regs allow the gas pipe to be covered provided it is protected by a steel pipe against mechanical damage.
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