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Architectural PVDF vs PTFE Coated Membranes: Biaxial Tensile Modulus, Solar Transmission, and Fire Ratings

Published: 2026-10-26 · Updated: 2026-10-29 • 9 min read • Membrane Materials Scientist, Spanbest Polymer Lab

Comprehensive laboratory testing data evaluating biaxial warp/weft tensile strength, titanium dioxide self-cleaning photocatalysis, non-combustibility Class A1 vs B1, and 25-year life cycle performance in extreme industrial environments.

Architectural PVDF vs PTFE Coated Membranes: Biaxial Tensile Modulus, Solar Transmission, and Fire Ratings

1. Mechanical Comparison: High-Tensile PVDF vs Woven PTFE

| Property | Heavy Industrial PVDF (1050 g/m²) | Architectural PTFE / Glass Fiber (1250 g/m²) | |---|---|---| | **Base Fabric** | High-Tenacity Low-Wick Polyester (1670 dtex) | Micro-Fine Woven Glass Fiber Yarn | | **Warp Tensile Strength** | **≥ 4,200 N / 5cm** | ≥ 6,000 N / 5cm | | **Weft Tensile Strength** | **≥ 4,000 N / 5cm** | ≥ 5,500 N / 5cm | | **Tear Strength (Trapezoid)** | **≥ 600 N / 550 N** | ≥ 450 N / 400 N | | **Solar Reflectance Index (SRI)** | **82 (Reduces heat absorption)** | 92 (Super reflective) | | **Fire Classification** | DIN 4102 B1 / NFPA 701 | EN 13501-1 Class A2 / Non-Combustible | | **Expected Service Life** | **20 – 25 Years** | 30 – 35+ Years |

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