The lifespan of a roofing system depends on the type of membrane, the quality of its installation, the maintenance performed, and its exposure to weather conditions.

As a general rule, the average lifespan of roofing membranes with a proper preventive maintenance program is as follows:

Elastomeric membranes: Approximately 25 years, depending on maintenance, exposure to weather conditions, and activities performed on the roof.

Built-up roofing (asphalt and gravel): Approximately 20 years, depending on maintenance, exposure to weather conditions, and activities performed on the roof.

Single-ply membranes (monolithic, EPDM, TPO, and PVC): Approximately 25 years, depending on maintenance, exposure to weather conditions, and activities performed on the roof.