Double Bias E-Glass Cloth ±45° – 400gsm – Full roll

400gsm Double Bias Fibreglass ±45° – 415gsm | Full Roll | Marine Fibreglass Reinforcement

400gsm Double Bias Fibreglass | Hull Lamination | Torsional Reinforcement | Marine Panel Fabrication | Keel & Rudder Repair

The 400gsm Double Bias Fibreglass cloth full roll is the smart buy for professional boatbuilders and marine fabricators who regularly work with torsionally loaded structures. Because fibres run at +45° and -45°, it delivers superior shear strength and diagonal load resistance across every metre of the roll — making it the consistent choice for hull skins, rudders, and curved marine panel fabrication at production scale.

For smaller or one-off jobs, this fabric is also available per metre with no minimum order.

Marine Applications

Purpose-built for hull skins, rudders, keels, and torsionally loaded marine structures where shear and diagonal load resistance are critical. Because fibres run at ±45°, it also conforms readily to compound curves — making it well suited to curved hull sections and complex marine panel fabrication. For a complete structural laminate schedule, combine with 0°/90° biaxial to achieve full four-direction coverage.

Key Properties

• ±45° fibre orientation delivers superior torsional stiffness and shear strength
• Uncrimped fibres lie flat, resulting in clean wet-out and consistent mechanical performance
• Conforms readily to compound curves due to natural bias stretch
• Compatible with epoxy, polyester, vinyl ester, and urethane-acrylate resin systems
• Suitable for hand layup, vacuum bagging, and resin infusion
• Full roll supply ensures consistent material from the same production batch throughout your project

Processing Note

Because fibres run diagonally, this cloth conforms readily to compound curves. However, take care when handling to avoid distorting the fibre orientation before wet-out.

Technical Specifications

FAQs

Is this the same fabric as the per metre listing? Yes — identical specification. The 400gsm Double Bias Fibreglass full roll simply offers better value per metre for ongoing or production work.

Can I get a sample before committing to a full roll? Yes — order a metre from our per metre listing first before purchasing the roll.

Frequently Bought Together

1200gsm or 800gsm 0°/90° biaxial for complementary structural plies, 200gsm or 450gsm CSM for interleaving layers, laminating rollers and squeegees, vacuum bagging film and consumables.