This is a B vent for a Coleman furnace that had been converted from natural gas to propane. It has lots of rust on the cap and rust on the shingles below indicating that it was dripping. I wrote up that it was most liking condensation from possibly an over-sized vent. Is there anything else I should have looked at with regards to the rust on the Chimney vent?
Really you think so? Is that vent located in an area that may receive rainfall?
2 Likes
I would not write up the drip cap of the vent. I would write up the improper installed roof slashing.
the top 2 courses of shingles should go over the flange, not just the top course.
1 Like
Yes, it gets rain there. There were some dents on the rain cap that could hold puddles of water. I did write that it had dents. I was wondering because he converted from natural gas to propane if that could cause more condensation. Would propane burn hotter?
Sean I just wouldn’t put anything in the report that the source of the corrosion is from an oversized flue pipe. Unless you’re in the business and a licensed contractor and you’ve done the calculations. I would just called out the corrosion in need of repair.
2 Likes
There is little to no rust at the B vent pipe
1 Like
Ok, thanks
Now looking at it there is a dent on the cap that allows water to pool.