Inspected this house today and the roof and gutters all looked good except for the staining at this one leader drain. Gutter had leaf guard attached so i couldn’t see inside. Any ideas what would cause this???
Could be a steel valley above feeding rusty water into the gutter or steel gutters or the leaf guards could be steel. .
My first thought is a hand full of nails or gutter clips left in the gutter and they are rusting?
No valley above, gutter and guards are aluminum. it would take a box of nails to make that much rust. I was looking back at my pictures and the attic A/C unit’s condensate dumps into that gutter - I’m guessing that’s the culprit.
Lol… We have a winner!!
By the way, I found a box of nails in a gutter a few months back( actually 12 sleeves for nail gun.) the gutter was overflowing . So in this business be surprised by nothing and consider everything…