The table below summarizes the typical design life for common membrane materials:
Material
Typical Design Life
Key Characteristics
PTFE-coated Fiberglass
30+ years (proven exceeding 35 years)
Extremely durable, weather-resistant, UV-stable, chemically inert
PVC-coated Polyester
15–20 years (10–15 years in high-UV regions)
Cost-effective, flexible, available in multiple colors
ETFE Film
25–30+ years
Lightweight, UV-resistant, does not degrade in extreme conditions
The longevity of a membrane structure depends not only on the material but also on design quality, fabrication precision, environmental conditions, and maintenance practice.
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