3.5oz 25" Bi-Axial Cloth

$7.70 - $550.00 (Inc. GST)
$7.00 - $500.00 (Ex. GST)
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Width: 63.5cm | 25”
Colour: Plan/Clear (No Colour Trace)

Double Bias Cloth

The construction of Double Bias weaves comprises multiple layer of E-Cloth twined on a 45 degree angle (cross weave), as well of E-Cloth twine on a 90 and 180 degree angles. This construction offers the highest levels of structural lamination, with the maximum strength-weight ratio and stiffness-weight ratio.

The Double Bias cloth properties included highest levels of Impact Resistance, Fatigue Resistance and Structural Durability. For these reasons the Double Axel Cloth is commonly use with stringerless EPS surfboards to improve the core strength of the foam and improve the structural sturdiness. The Double Bias cloth is also used for strengthening the rails and tail area of surfboards, the area’s most affected by high impact and back foot pressure.

This unique construction of the Double Bias cloth creates an X pattern on the deck of the board from rail to rail. Which is one of the reason it offers the structural properties, but this also integrates both rails of the board so you gain the advantages of rails connection. This includes a livelier feel, quicker rocker rebound flex and maximum rail control. As the board has fibers running rail to rail and nose to tail, offering a constant flex over the whole board. 

The X pattern construction of the Double Bias creates a unique flex pattern that optimising a kinetic flex memory; which amasses energy and then releases it, delivering extra acceleration and drive during transitions (in and out of turns). 

Industry Uses:

Back Rails Manufactures place Carbon Double Bias Tapes on the back rail of surfboards to prevent the tails from shattering and strengthening the deck from foot compressions.

Bottom of the board The Double Bias Tapes are also used on the bottom of the surfboards to create additional spring or pop out of the board. This is know as a kinetic flex, as the board is place under pressure while in transition, during or out of a turn the board springs back to its natural curvature and delivers additional speed.

Full Rail of the board The Double Bias Tapes are often used along the full length of the surfboard rail with stringerless surfboards. This is to add additional strength or to replace the strength that a timber stringer would provide, therefore creating a Parabolic Frame. The Parabolic Frame helps prevents the board from twisting which increases the liveliness/responsiveness, this also creates a parabolic flex pattern that allows to board to deliver more drive, speed and power.

Lay-ups: The Carbon Double Bias is used during the lamination process. The tapes are place on the foam before the cloth is laminated. Most manufactures mark the area they wish to place the Carbon Double Bias Tapes, and brush a small amount of resin on the foam (to prevent to the Carbon Hybrid Tapes from moving). The Double Bias Tapes are then placed on the resin (making sure the resin has soaked through) and then continue to lay the cloth over the board and laminate as normal. 

Resin Compatibility:

The Double Bias Tape are compatible with both Epoxy and Polyester Resin.


Superior weight-to-strength ratio

When laminating rails the cloth bends to curved edges and will not fold or kink when wrapping

Carbon Double Bias cloth also uses a unique blend of E-Cloth to ensure minimal amount of resin absorption

Suitable for hand lay-ups, vacuum bagging, vacuum injection and other RTM-processes

Superior flex memory properties

Advanced strength, durability, compression and impact properties

Common Glassing Construction Methods for Top/Deck Layers 

(please note: These are suggestions and guidelines only)

PU Competition Boards: 1 Layer of Shapers 4Oz Carbon Double Bias Cloth
Insert / Shapers 2Oz Surfboard Cloth

PU Standard Weight Boards: Layer of Carbon Double Bias Cloth Insert / 1 Layer of Shapers 4Oz Surfboard Cloth

PU Big Wave Boards: 1 (or 2) Layer of Shapers Carbon Double Bias Cloth Insert / 1 (or 2) Layer of Shapers 4Oz Surfboard Cloth

EPS Comp-Light Boards: 1 Layer of Shapers Carbon Double Bias Cloth Insert / 1 (or 2) Layer of Shapers 4Oz Surfboard Cloth

EPS Standards Boards: 1 Layer of Shapers Carbon Double Bias Cloth Insert / 1 Layer of 6Oz Surfboard Cloth (and or) 1 Layer of 4Oz Surfboard Cloth 


Please note that the fibers running vertically stay visual