Sweet Composites, 6211 Ridge Drive, Bethesda, MD 20816-2641 USA
301-229-2201  –  9:00 a.m. to 5:00 p.m. Eastern, Mon.-Fri.

Last Update: 1 May 2013


Polyester, nylon, dynel, glass mat


Auromat, Spherecore, Spheretex Core Materials


Please note that all fabrics we sell are designed for laminating with resin. They are not suitable for sewing into clothing, tents, backpacks, or any other sort of soft gear.   We do not sell yarn of any type.

When we reach the end of a roll while filling a fabric order we must start a new roll and the order will be in two pieces. If it is essential for your project that you have a continuous piece of material you must tell us that when you order. Orders for five yards or less will always be continuous. For fabric orders over five yards there will be an upcharge of 5% to guarantee continuous material. This does not apply to fiberglass mat, for which continuity is never an issue.

Polyester Fabric

Polyester fabric is primarily used as a cheaper substitute for Kevlar® to impart toughness to a laminate but it does not provide as much stiffness as does Kevlar. Style 29019 is a 20x19, 1000 denier, 5 oz plain weave, available only in 47" width at this time.

Polyester1-4 Yd5-19 Yd>20 YdSm RollLg Roll500 Yd1000 Yd
29019-47"7.006.505.604.704.304.003.75


Nylon Fabric

This light-weight nylon fabric is typically used as a peel ply. Style 28325 is a 40x40, 210 denier, 2 oz plain weave. We now have 44" width nylon peel ply. This is a peel-ply fabric for laminating – not a sewing fabric!!

Nylon1-4 Yd5-19 Yd>20 YdSm RollLg Roll500 Yd1000 Yd
28325-44"9.758.507.806.606.155.855.55


Dynel Fabric

Dynel fabric has very high abrasion resistance but swells in the resin such that it works better if vacuum bagged or pressure molded. The most common uses of dynel are for wear patches on boats, edgings on paddles, and the like. It has also been used as a deck covering on wooden sailboats. It seems to be a good choice anywhere that abrasion is a major issue. (This material is similar in its abrasion resistance to the original Dynel made by Union Carbide, which has been unavailable for many years, but it may be chemically different and have different properties in aspects other than abrasion.) Please note that it retains a milky appearance when saturated rather than turning clear in the resin like fiberglass. Hence it is not a good choice if one desires to see the underlying wood, as on a strip canoe. Style 90285 is a 30x30, 660 denier 2-ply twisted yarn, 5 oz plain weave.

Dynel1-4 Yd5-19 Yd>20 YdSm RollLg Roll500 Yd1000 Yd
90285-54"9.608.407.806.506.105.855.65


Dynel Sleeve & Cord

Dynel sleeve is a knitted material used for covering paddle shafts. It comes in a standard weight and light weight. Dynel cord is used for reinforcing edges and tips on foam-core paddles. It is about 3/8" diameter with a hollow core so that it will flatten out when pressed. The cord and standard sleeve yield about 23 yd/lb. The light-weight sleeve yields about 45 yd/lb. All three products are the same price — be sure to specify which you want when you order. They can also be made up in colors at higher cost. Generally colors must be special ordered but some may be in stock. The sleeve is put up on variable-size rolls, typically between one and two lb. For the cord only, the 10-49 lb price applies to a full carton, with 12-15 lb in a typical carton, and the over-50-lb price applies to a full case, with four cartons making up a case.

Dynel sleeve & cord1-9 Yd>10 Yd2-9 Lb10-49 Lb>50 Lb
Standard, Light, or Cord1.101.0019.0016.5015.00


Core Materials

Auromat is a non-woven fabric designed with a micro-cellular structure that provides volume with very low weight and voids that allow easy incorporation of resin. It is used as a core material in FRP composites to form stiff, lightweight laminates. It is 1m (39 in) wide and 4mm thick. A roll is 40m (44 yd).

Spherecore SP is a material made of non-woven polyester fabric, volumized through the embedding of thermoplastic microspheres. It is effective at preventing print-through and allows the manufacture of particularly high-quality laminate surfaces. The Spherecore SP micro-cellular structure provides volume with very low weight and voids that allow easy incorporation of resin. It is used as a core material in FRP composites to form stiff, lightweight laminates. It is 1m (39 in) wide and 2mm thick. A roll is 70m (76.5 yd).

Spheretex is a material made of woven E-glass fabric, volumized through the embedding of thermoplastic microspheres. The Spheretex micro-cellular structure provides volume with very low weight and high strength. It is used as a core material in FRP composites to form stiff, lightweight laminates. Spheretex provides a very strong light sandwich core, and is best utilized with a vacuum-bagging process. It is 1.25m (49 in) wide and 2mm thick. Weight is 5 oz/square yard. A roll is 70m (76.5 yd).

We can order other Spheretex thicknesses, and other Spheretex styles are available in carbon, aramid, and polyester.

Core Materials1-4 Yd5-19 Yd>20 YdFull Roll
Auromat, 4mm x 39"  9.00  7.50  6.50250.00
Spherecore, 2mm x 39"  6.50  5.50  5.00345.00
Spheretex, 2mm x 49"18.5016.5013.50930.00


Fiberglass Mat

Chopped-strand glass mat is made in several different weights and is measured by the square foot rather than the square yard like woven goods. We normally offer only one weight, which is 1 oz/ft². Rolls are typically 90 to 100 pounds (115-130 yd) and are sold by the pound. Please note: Glass mat must be used with polyester or vinylester resin; it is not compatible with epoxy. The glass mat has a binder that is soluble in styrene. Epoxy has no styrene. The binder needs to dissolve for the fabric to conform.

Fiberglass matLarge Roll Only
1 oz x 50"2.98/ lb




Please contact us for more information.