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re: Water heater exhaust to the roof is leaking

Posted on 12/30/22 at 9:26 am to
Posted by weadjust
Member since Aug 2012
15173 posts
Posted on 12/30/22 at 9:26 am to
Water heater and furnace roof vents are usually all metal. I use leak stopper roof sealant in caulk gun tube. Put a bead around the storm collar and where the flashing cone meets the vent pipe. Your picture looks like the visible light is coming from where the flashing cone meets the pipe.



quote:

Do new water heaters come with new exhaust?


No. The roof vent pipe and collar is usually not replaced until it's rusted out. Mine is probably 50 years old.
This post was edited on 12/30/22 at 9:30 am
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