Where roofs in this county actually leak
After enough roofs you stop looking at the middle of the slope first. The recurring failure points are the same across Atlantic County, though the reason they fail differs between a bayfront street in Somers Point and a wooded lot in Mullica Township.
- Step and counter flashing where a roof plane meets a wall — common on additions, dormers and second-storey overbuilds.
- Pipe boots. The rubber collar around a plumbing vent hardens, splits and lets water straight into the deck, often within ten to fifteen years.
- Chimney flashing and the mortar crown above it.
- Valleys, where two slopes concentrate the entire catchment of both into one line.
- Skylight perimeters and curbs.
- The roof edge — eaves and rakes — where wind gets under the first course.
- Nail pops and fastener backs-out that lift the shingle above them.
