70 year old Cast Iron Boot Vent can it be reused

Discussion in 'Plumbing Forum, Professional & DIY Advice' started by spongevent, Jun 29, 2011.

  1. spongevent

    spongevent New Member

    Joined:
    Jun 29, 2011
    Location:
    Scranton PA
    I am replacing extra thin Cast iron pipe with PVC. its full of pinholes and cracks.

    The old vent pipe is 4 inch Cast Iron ; the Boot is made of cast iron;
    and the 4 inch pipe is just pushed through and sealed with tar. That's what it looks like
    the vent is probably blocked by bird droppings. We had a sever thunderstorm last night and no water dripped down the vent.
    Can I pull the cast iron out and slide the PVC through and just reseal it with Tar ?
    I heard that PVC is Sun light sensitive; can the 18 inches poking through be damaged by the sun ?
    I will screen vent cap the new vent to keep the birds off of it.
    I am dizzy; and don't want to climb up the ladder any more than I have to.:rolleyes:
     

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  2. hj

    hj Moderator & Master Plumber Staff Member

    Joined:
    Aug 31, 2004
    Occupation:
    Plumber
    Location:
    Cave Creek, Arizona
    I do not see anything that makes me think the boot is "cast iron" and IF it were it would be the only one I have ever seen. Usually they were lead around a cast iron pipe but it could be tin with tar. You put a coat of paint on the exposed part of the vent. IF you are "dizzy; and don't want to climb up the ladder any more than I have to", do NOT climb up on the ladder at all.
     
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