Originally Posted By: Ben Gromicko
This post was automatically imported from our archived forum.
On a few Type B Gas vent pipes, I have seen rust. Surface rust. On the vent pipe, near the cap. What is this rust from? Water? Condensation? Hydrocarbons? Is this a normal thing. Monitoring recommended is a bad comment, since you have to climb the roof to get to the vent pipe (unlikely by most home owners).
Image of rust on a Type B Gas vent pipe.
This image is of the storm collar around the Type B gas vent pipe. The manufacturer's state that the storm collar should be sealed with a non-hardening mastic sealant. What if the sealant is cracked open or weathered, and needs to be improved? Can you get this stuff at Home Depot?
Thanks for the help.
Benjamin John Gromicko
NACHI & ASHI Member