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Does the vent pipe need to go through the eaves?

Discussion in 'Plumbing and Central Heating' started by Darren9571, 2 Jul 2021.

  1. Darren9571

    Darren9571

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    Hi all

    My vent pipe currently goes through the roof and is held in place by lead. The lead is cracked and the vent pipe is leaning. I don't know why it was installed like this rather than as a single pipe

    Does the vent pipe need to go this high or could I cut it below the eaves and put an air admittance valve on? I have read that I can, but other web sites say it has to by 900mm above the eaves as its within 3m of an opening window. Not sure whether I have to fix what is there or whether I can take a different approach.

    Thanks

    IMG_1448.JPG IMG_1449.JPG IMG_1450.JPG
     
    Last edited: 2 Jul 2021
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  3. cdbe

    cdbe

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    Go left a bit and finish under eaves.
     
  4. Darren9571

    Darren9571

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    Do you mean put in an angled piece to dog-leg further from the window?
     
  5. cdbe

    cdbe

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    Yes, if you need to to meet the regs.
     
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  6. ^woody^

    ^woody^

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    Ask the plumbers in their forum
     
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  8. JohnD

    JohnD

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    The window to the right is higher than the eaves.

    It seems odd to me that it doesn't have a dog-leg. Perhaps the upstairs bathroom is a later addition.

    The existing roof detail is very poor.
     
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  9. Darren9571

    Darren9571

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    Thanks all.

    The room was originally a bedroom and converted to a bathroom long before we bought it, but the vent pipe would have been put in at that point as we have an unused cast iron one around the other side of the house where the original bathroom was. Having measured today, I think I might struggle to get the dog-leg in and finish below the eaves as the vent top would need to be 2m further left and I only have 1.5m between where the soil pipe joins and the eaves so it would need to finish roughly above the apex of the outhouse roof to the left.

    The design of having opening windows set higher than the eaves is quite common around here (Bournville in Birmingham), I think it was to save bricks! The upstairs walls slope in from around 6ft above the floor.

    I will re-post in the plumbers forum and see if they have further suggestions.

    JohnD - Many things I discover in this house are very poor - and I am ever grateful to all of you for helping me out!
     
  10. JohnD

    JohnD

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    if you have a dog-leg, you can place it to project outside and above the eaves.
     
  11. Madrab

    Madrab

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    It's set at that hight specifically because of the opening window I would think. Why it's up through the roof and not up and around the gutter is a bit of a mystery though, maybe to allow it to be supported properly.

    Given it's just a vent then I don't see any reason it cant be doglegged left (as you look at the pic) and then up and around the gutter further away from the window, apart from aesthetics.
     
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