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  1. #1
    Join Date
    Oct 2013
    Location
    West Midlands, England
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    Sealing pipe entry into wall



    Hi,

    Thanks to the chaps on here I am just finishing off after having a unit installed.

    Daft question - is the common approach to just use some PU foam to seal the pipe entry through an external wall. Aesthetics won't be an issue as the pipes are in trunking outside, just need something to close the air gap.

    Many thanks,

    Damian



  2. #2
    Join Date
    Feb 2007
    Location
    UK
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    Re: Sealing pipe entry into wall

    Yes,
    Self expanding foam would be the most common way for larger gaps, silicone sealant for smaller ones or even to seal the foam with.


  3. #3
    Join Date
    Oct 2007
    Location
    manchester
    Age
    50
    Posts
    5,707
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    45

    Re: Sealing pipe entry into wall

    as said expanding foam will be sufficient- as cement can compress the lagging and the lime can rot any exposed copper

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