Where Roof Leaks in Rochester Actually Start

The stain you can see may not be directly below where the water actually got in. If you’re looking at one on your ceiling right now, this is where we’d actually look first, and what’s worth doing before anyone gets on a ladder.

Water doesn’t drop straight down the moment it gets past a shingle. It runs along the underside of the roof deck or along a rafter until something gives it a place to let go: a joist, a nail, a seam in the insulation. That’s why a stain over a bedroom can trace back to a leak near the chimney, or a valley, several feet away. The stain tells you water got in. It doesn’t tell you where.

In a Rochester winter specifically, the eaves are a common source on their own. An ice dam backs meltwater up under the shingles at the roof’s edge, a different mechanism from a flashing leak, but it shows up the same way: as a stain inside the house. We’ve written that one up separately in full, including what actually prevents it, so we won’t repeat it here.

Tell us where it is in the room, when you first noticed it, and whether it’s changed since: bigger, smaller, gone after the rain stopped and back after the next storm. That’s genuinely useful before we ever set foot on the roof, and it’s the same conversation we’d start with on-site. Call, or ask us directly. We’d rather talk through what you’re seeing than have you guess.