Fan Favorite WEST SYSTEM Biaxial Fabric 50″ x 20 Yards #737-20

WEST SYSTEM 737-20 Fiberglass & Repair

This high-performance biaxial fiberglass fabric is engineered for applications demanding exceptional multi-directional strength, impact resistance, and structural integrity. The 50-inch width and 20-yard length provide substantial coverage for large-scale professional marine construction and repair projects where superior strength-to-weight performance is critical.

Advanced Biaxial Construction:

Unlike traditional woven fabrics, where fibers cross over and under each other, biaxial fabric features two layers of fibers oriented at ±45° angles, held together by light stitching. This non-crimped construction keeps fibers straight and flat, resulting in higher strength, superior stiffness, and significantly reduced print-through compared to woven materials.

Multi-Directional Strength:

The ±45° fiber orientation provides outstanding strength in multiple directions, making biaxial fabric ideal for structural applications where loads come from various angles. This configuration delivers excellent resistance to torsional stress, impact, and flexing—critical performance characteristics for hull bottoms, high-stress panels, and structural components subjected to real-world marine conditions.

Superior Surface Quality:

The flat, non-crimped fibers create laminates with minimal surface texture and reduced print-through. This means less fairing and finishing work compared to traditional woven fabrics, saving time and labor while producing a smoother, more professional surface ready for gelcoat, paint, or secondary bonding operations.

Key Benefits:

• Exceptional Strength: Non-crimped fibers deliver higher strength than woven fabrics
• Multi-Directional Performance: ±45° orientation provides strength in multiple directions
• Superior Stiffness: Straight fibers create stiffer laminates for structural applications
• Reduced Print-Through: Flat construction minimizes surface texture
• Excellent Impact Resistance: Absorbs shock and flexing without delamination
• Wide Coverage: 50-inch width minimizes seams on large panels

Common Applications:

• Hull bottom construction and reinforcement
• High-performance structural laminates
• Deck and cabin top construction
• Major structural repairs requiring maximum strength
• Building composite panels for racing or performance boats
• Applications requiring superior strength-to-weight ratios
• Structural components subject to multi-directional loads

This 20-yard roll provides substantial material for professional boatyards and large-scale projects. When you need the ultimate in structural performance, impact resistance, and surface quality, biaxial fabric delivers proven results that outperform traditional woven materials.

Part Number: 737-20
UPC Code: 811343011864