Signs It's Time for Replacement
- Age: 20+ years on architectural shingles in Maryland's climate
- Widespread granule loss: Bald spots, granules filling gutters
- Curling or cupping: Shingle edges turning up across large areas
- Multiple leaks: More than one or two isolated spots
- Daylight in the attic: Visible light through the roof deck
- Sagging: Any dip or sag in the roofline (structural — address urgently)
When Repair Makes Sense
Isolated damage on a relatively young roof: a few blown-off shingles, one flashing leak, minor hail on one slope. If the rest of the roof is healthy, targeted repair is smarter than full replacement.
The Gray Zone
Roof at 18 years with some wear but no leaks? You have options: replace proactively, or monitor and plan for replacement in a few years. A free inspection gives you the data to decide.