The longevity of your commecial roof is dependent on many factors, from weather conditions to roof type.
Here are the averages for common roof types:
1. Spray Polyurethane Foam: 30 - 50 years
2. Single-Ply Membrane TPO: 15 - 20 years
3. Single-Ply Membrane EPDM: 20 -25 years
4. Metal: 30 - 45 years
5. Built-Up: 10 - 15 years