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Fiberglass Tapes


Please note that only fiberglass is listed here and that kevlar and carbon are listed in their own sections. These tapes have no adhesive backing and according to their description can have a a clean selvage edge or can be sliced from a wider roll. We have a commercial slicing machine and in certain cases, if not listed here, we can slice wide rolls of cloth into narrower widths. Example : A 50" wide to your specification can be sliced into two 25" rolls and one of the 25" can be sliced into narrower widths. In most cases you have to take the entire 50" as we don't want to be stuck with non standard sizes. Call to discuss.

Stitched Non-Woven Biaxial and Triaxial

The axial fabrics listed below are different than woven fabrics in that the yarn layers are layed flat on top of each other and lightly stitched together. Woven fabrics have the strands of glass going over and under like a normal piece of cloth. The axials are generally stronger and stiffer than woven products for any given weight and usually offer the best value. They are compatible for both polyester and epoxy resins unless stated differently.

Most biaxials are listed as having a layer of chopped strand mat on them or no layer of mat. Mat will give a smooth surface to one side. Example 17 oz. x 50" wide has no mat and simply weights 17 oz. per sq. yard. The same material with a thin layer of 8 oz. of mat would be called 1708 for a total weight of 25 oz. per sq. yard.


Biaxial is 2 layers, Triaxial is 3 and Quadaxial is 4. The different layers will run in different directions according to a certain specification. 0 degrees means one layer is running longitudinal (length wise or warp direction). +45 and -45 means that there are 2 layers running off 45 degrees on each side of the warp direction. 90 degrees means that there is a layer running at 90 degrees (horizontal, weft or fill direction) to the warp direction.

Here are some examples: +45 degrees and -45 degrees biaxial is a common biaxial looking like this in the warp a ...x... in the warp direction. 0 degrees and 90 degrees would be like a cross hair (+) if viewed in the warp direction. +45 degrees, 0 degrees and -45 degrees would be a triaxial like the previous biaxial except the third layer is running 0 degrees or 100 % in the length direction. Triaxials can also have the third layer running in the weft or 90 degree direction.

A quadaxial would have 4 layers -45, + 45, 0 and 90 degrees. Quadaxials are selected for the greatest stiffness and nearly equal strength in all directions.



Some axials come with a layer of chopped mat. This is an extra layer that is either stitched or stuck on to one face. Mat terminology can be confusing because it can be specified in ounces per sq. foot or ounces per sq. yard. Example: 1708 is a very common biaxial. 17 is the weight in ounces of the 2 layers of glass and the 08 means a third layer of mat at 8 ounces per sq. yard to give you a total weight of 25 ounces per sq. yard.

1710 would have 10 ounces of mat and 1715 would have 15 ounces. Note that many manufacturers round off the weights and 1708 may be the same as 1808 and the 08 may be closer to 7 ounces.

(Stitched Axial Type) Description  Price Per Lineal Yard  
Please specify the tape weight when ordering.

Tight weave (T) sliced from a wide roll (no selvage edge) 6" wide. 2/3 of the yarn and strength is in the cross/weft/or fill direction where you need it most. This tape is very smooth and thin and is stronger than normal 6 oz. in the weft direction. Excellent for draping around sharp corners but more care must be taken to wet out.

Sliced from a wide roll. Will have loose, no hard, salvage edge.

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