Biaxial +/-45° with CSM – Combi 900 (1708) – 50" Wide

This 1708 combi fiberglass reinforcement combines a stitched +/-45° biaxial fabric with an 8 oz chopped strand mat backing, delivering excellent multi-directional strength, laminate buildup, and bonding performance. The biaxial fibers provide reinforcement in two directions, while the mat layer helps increase thickness and improve adhesion between laminate layers.

The designation 1708 refers to the fabric construction:

• 17 oz/yd² stitched biaxial fiberglass (+45°/-45°)

• 8 oz/yd² chopped strand mat backing

Together, these layers create a heavy-duty reinforcement widely used in marine, industrial, wind energy, transportation, and composite repair applications.

Unlike woven fiberglass fabrics, the stitched fibers remain straight and uncrimped, allowing loads to be carried more efficiently and helping maximize laminate strength. The fabric drapes well over contours while providing rapid thickness build-up for structural laminates.

Key Features

• 50" wide roll format

• 17 oz stitched biaxial fiberglass (+45°/-45°)

• 8 oz chopped strand mat backing

• Approximately 25 oz/yd² (850–900 g/m²) total weight

• Excellent multi-directional strength

• Rapid laminate thickness build-up

• Good drape and handling characteristics

• Compatible with polyester and vinyl ester resin systems

• Ideal for structural laminates, repairs, and reinforcement

Common Applications

• Marine construction and repair

• Wind turbine blade repairs - LM, TPI, Tecsis

• Composite panel manufacturing

• Structural reinforcement

• Tooling and mold construction

• Fiberglass repairs and modifications

• Heavy-duty industrial composites

Whether building new composite structures or performing structural repairs, 1708 biaxial fabric provides a proven combination of strength, thickness, and durability for demanding fiberglass applications.