Material is only one factor
Asphalt shingles, torch-on membranes & other roof systems have different expected service patterns, but product alone does not determine performance.
- Installation quality
- Slope & drainage
- Sun & wind exposure
- Tree debris & organic growth
Details often fail before the field material
Flashing, penetrations, edges, drains, valleys & roof-to-wall transitions experience concentrated water & movement.
- Sealant condition
- Ventilation balance
- Drainage blockages
- Mechanical or trade penetrations
Maintenance helps extend serviceable life
Regular visual review & prompt attention to small conditions can reduce avoidable deterioration. Maintenance cannot restore failed roofing or rotten decking.