Large Span Roof Membrane PVC Fabric
Large span roof membrane PVC fabric is a high-performance architectural membrane engineered for expansive roof structures requiring column-free interior spaces. The material features a high-tenacity polyester scrim (1100-2200 dtex) with a specialized PVC coating, delivering tensile strengths up to 600 N/50mm in the warp direction. Available in thicknesses from 0.9 mm to 2.2 mm, the membrane supports spans exceeding 15 meters with appropriate cable reinforcement. The material incorporates a PVDF topcoat for superior weatherability, self-cleaning properties, and long-term aesthetic retention. The membrane meets EN 14716 and ASTM D4850 standards for tensile fabric structures.
Performance by Specification
Structural Design Data
- Minimum Curvature Radius4.0 m (synclastic), 2.5 m (anticlastic)
- Recommended Pretension1.5-3.0 kN/m
- Maximum Span (Cable-free)10-12 m
- Maximum Span (Cable-reinforced)15-20 m
- Wind Load CapacityUp to 2.0 kN/m2 (EN 1991-1-4)
- Snow Load Capacity0.6-1.2 kN/m2
- Creep Strain (1000h, 30% Load)Less than 1.5%
Large Span Applications
Main roofs, training facilities, retractable covers
Departure halls, concourses, hangar roofs
Large-span pavilions, trade fair halls
Manufacturing plants, warehouses, logistics centers
Railway stations, bus terminals, ferry terminals
Large Span Advantages
Key benefits that make this membrane ideal for large-span roof applications.
Column-Free Interiors
High tensile strength enables spans up to 20 meters with cable reinforcement, creating unobstructed interior spaces for flexible use.
Lightweight Construction
Weight of 1.5-3.0 kg/m2 reduces structural steel requirements, lowering foundation and framing costs by up to 40%.
Natural Daylighting
Translucent options with 8-20% light transmission reduce artificial lighting needs, saving energy and creating bright interiors.
Architectural Expression
Form flexibility enables iconic structural forms, creating landmark architecture with unique visual identity.
Rapid Installation
Prefabricated panels with welded seams minimize on-site work, reducing construction time by 30-50% compared to conventional roofing.
Long-Term Durability
UV-resistant coating and reinforced scrim provide 25+ years of service life with minimal maintenance requirements.
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