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