PTFE roof membrane is a special composite material designed for large-scale permanent tensile structure. The membrane is made of PTFE coated fabric, PTFE offers excellent weather, chemical UV radiation and temperature resistance, inside tensile fabric offers high strength and durability, provides a long life span up to 25 years. Surface of the material is smooth and non-adhesion, it can be easily cleaned by rainwater. 
Structure 
Specifications of PTFE Roof Membrane
| Specs | Standard Data | Test Method | ||
M900 | M700 | M500 | ||
Weight (g/m2) | DIN EN ISO 2286-2 | |||
Thickness (mm) | DIN EN ISO 2286-3 | |||
Tensile Strength (N/5cm) | 9500 | 8000 | 6000 | DIN 53354 |
Tear Strength (N) | 500 | 400 | 300 | DIN 53363 |
Translucency (%) | 10% | 12% | 15% | ASTM E 424 |
Solar Reflection (%) | 70±10 | 70±10 | 70±10 | ASTM E 424 |
Basic Cloth | Fiberglass | Fiberglass | Fiberglass | DIN 60001 |
Coating | PTFE | PTFE | PTFE | |
Color | White ( After exposure to sunlight) | |||
Weaving | Plain 1/1 | Plain 1/1 | Plain 1/1 | DIN ISO 9354 |
Fire Proof Grade | Class B | Class B | Class B | GB 8624-2006 |