Gilles Guezille
New Member
Nightmare 1960 Ranch home with 4 inch cast iron vent going through new roof.
I want to replace Most of the CI with 3 inch PVC and use a 3” to 4 inch boot to connect the PVC to the stub of CI going through the roof. The CI is obviously very heavy and the toilet flange is resting on cinder blocks in the crawl space , supporting most or all the weight.
My plan was to cut the pipe in the attic as close to the roof as I can but leave enough length to later use the rubber boot. Then I start cutting chunks of CI below until it’s all gone
My concern is that the stub could fall in because of it’s own weight in and leave a hole in my new roof. Is this a legit concern? If so is there a way to prevent this?
Thank you
I want to replace Most of the CI with 3 inch PVC and use a 3” to 4 inch boot to connect the PVC to the stub of CI going through the roof. The CI is obviously very heavy and the toilet flange is resting on cinder blocks in the crawl space , supporting most or all the weight.
My plan was to cut the pipe in the attic as close to the roof as I can but leave enough length to later use the rubber boot. Then I start cutting chunks of CI below until it’s all gone
My concern is that the stub could fall in because of it’s own weight in and leave a hole in my new roof. Is this a legit concern? If so is there a way to prevent this?
Thank you