About 5 years ago I noticed the paint chipping on the ceiling around the chimney that vent my furnace and water heater so I hired a guy to replace the flashing around the chimney.
Since then I've noticed further damage and paint peeling in the same area, so I went up in the attic and monitored the roof during 2 rain storms. I observed no water leaks and the chimney, sheathing, and tar paper around the chimney were bone dry.
I also looked for leaks along any of the sheathing and observed no leaks.
I'm very stumped as to what is happening.
Some background information on the house:
-Built 1930 -No insulation around the brick chimney -Chimney liner is original as far as I know -Area below the damaged ceiling is a stove with no range hood
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