Over 698,000 strictly plumbing related posts
Plumbing education, information, advice, help and suggestions are provided by some of the most experienced plumbers who wish to "give back" to society. Since 1996 we have been the best online (strictly) PLUMBING advice site. If you have questions about plumbing, toilets, sinks, faucets, drains, sewers, water filters, venting, water heating, showers, pumps, and other strictly PLUMBING related issues then you've come to the right place. Please refrain from asking or discussing legal questions, or pricing, or where to purchase products, or any business issues, or for contractor referrals, or any other questions or issues not specifically related to plumbing. Keep all posts positive and absolutely no advertising. Our site is completely free, without ads or pop-ups and we don't tract you. We absolutely do not sell your personal information. We are made possible by:
Author:
new2plum (NY)
Hello: Please help me figure out this leak. It happens during medium to heavy rain. No leak during sink or tub use. I have a flat roof on a brownstone and a get about a 6 inch diameter water stain on my drop ceiling in the first floor. The top floor shows no leak. The leak is right below the bottom of the waster stack/ vent stack. There is no twisting of these pipes, ( the leak appears directly in line with the vent on roof. ) There is also an old metal rusted skylight about one foot away. A few days ago i got on the roof, tarmaked the skylight and vent. I also cemented some suspect seams. it is an asphalt roof about 10 yrs old and everything including the vent has been silvercoated to protect from the Sun. Today it rained and the leak reappeared. The vent is cast iron 1930s and the flange area is "built up" a few times it looks so Im not sure if its worth it to cut out all the way to the flashing. Should i just slip a rubber gasket on top and silicone? Is it possible that water getting inside the vent it self and the inner pipe is cracked. I went up again briefly today and seen the skylight is rather jagged in area with metal or a hard plastic type gasket attached the the glass, so i shave them down with a blade and mesh taped it and applied more tarmak for a smoother and hopefully tighter seal. I just want to cover my bases before calling in a roofer. once done, leak fixed or not, im gonna silvercoat all the repairs and add a bed of silicone to the skylight.
i have pics if needed thank you guys!
|
Post Reply
|
Author:
Pipe runner (AZ)
how close is the nearest joint either in the vertical or horizontal to the vent penetration? is that joint leaking?
yes to add pic/s of the situation.
this maybe a roofer's repair....a different forum.
Edited 1 times.
|
Post Reply
|
Author:
new2plum (NY)
thanks for the reply. Its hard to see the nearest connection since i don't have an attic. the leak reappeared during the heavy NY snow today and ironically it stopped at the end of the storm, which makes me continue to wonder if the leak is caused by a joint or pipe. downstaits i had the drop ceiling down and could see two drops every five seconds coming down each side of the pipe. it appeared to originate above the bottom joint (about 5 feet up, near the sink). Of note last year i had a plumber snake the upstairs sink with an electric heavy duty type and he was having difficulty with the clog. is it possible he snaked up the vent by mistake and damaged the vent stack?
when i go up next week with my roofer is one gallon of water enough to pour down vent or do i need to buy a longer hose. thanks so much
|
Post Reply
|
Please note:
- Inappropriate messages or blatant advertising will be deleted. We cannot be held responsible for bad or inadequate advice.
- Plbg.com has no control over external content that may be linked to from messages posted here. Please follow external links with caution.
- Plbg.com is strictly for the exchange of plumbing related advice and NOT to ask about pricing/costs, nor where to find a product (try Google), nor how to operate or promote a business, nor for ethics (law) and the like questions.
- Plbg.com is also not a place to ask radiant heating (try HeatingHelp.com), electrical or even general construction type questions. We are exclusively for plumbing questions.
Search for plumbing parts on our sponsor's site:
Special thanks to our sponsor:
|