West System Brand Not Qualified for Free Shipping West System Biaxial Fabric with Mat 50" x 20 Yards #738-20

WEST SYSTEM Biaxial Fabric with Mat 50" x 20 Yards #738-20

$1,047.12 $1,372.46 -24% OFF

WEST SYSTEM Biaxial Fabric with Mat 50" x 20 Yards #738-20

$1,047.12 $1,372.46 -24% OFF

WEST SYSTEM Biaxial Fabric with Mat 50" x 20 Yards #738-20

$1,047.12 $1,372.46 -24% OFF

SKU: WSB-738-20

UPC: 811343011871

More about this item

WEST SYSTEM 738-20 Fiberglass & Repair

This advanced composite fabric combines the structural strength of biaxial fiberglass with the surface quality and secondary bonding properties of chopped strand mat, creating a versatile, high-performance material for demanding marine construction and repair applications. The 50-inch width and 20-yard length provide substantial coverage for large-scale professional projects.

Dual-Layer Construction:

This engineered fabric features biaxial fiberglass reinforcement (fibers oriented at ±45°) combined with a layer of chopped strand mat. The biaxial layer provides exceptional multi-directional strength and impact resistance, while the mat layer creates a smooth surface finish and excellent secondary bonding characteristics. Together, they create a laminate that's stronger, smoother, and more versatile than either material alone.

Superior Strength and Stiffness:

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

Excellent Surface Quality:

The integrated chopped strand mat layer creates a smoother outer surface with reduced print-through compared to biaxial fabric alone. This means less fairing work and a better foundation for gelcoat, paint, or secondary bonding operations. The mat also improves interlaminar bonding between layers in multi-ply laminates.

Key Benefits:

  • Multi-Directional Strength: Biaxial construction provides strength in multiple directions
  • Smooth Surface Finish: Mat layer reduces print-through and fairing work
  • Excellent Impact Resistance: ±45° fiber orientation absorbs shock and flexing
  • Superior Bonding: Mat layer enhances secondary bonding and interlaminar adhesion
  • Efficient Layup: Combines two materials in one fabric for faster construction
  • Wide Coverage: 50-inch width minimizes seams on large panels

Common Applications:

  • Hull bottom construction and reinforcement
  • High-stress structural panels and components
  • Deck and cabin top laminating
  • Major structural repairs requiring strength and finish quality
  • Building composite panels with smooth outer surfaces
  • Applications requiring multi-directional strength and impact resistance

This 20-yard roll provides substantial material for professional boatyards and large-scale projects. When you need the structural performance of biaxial fabric combined with the surface quality and bonding properties of mat, this engineered composite delivers both in a single, efficient material.

Part Number: 738-20
UPC Code: 811343011871

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