4oz Fiberglass S Cloth - Style 6522

3.6 oz actual0°/90°27" or 30" wide

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Boat Suppliers

4oz Fiberglass S Cloth - Style 6522

SKU:FG-C0427S

$15.45 USD

$15.45 USD ~~USD~~

$15.45 yd

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Shipping calculated at checkout.

In stock

Width: 27"

27" 30"

Length: 1 Yard

1 Yard 3 Yard Pack 5 Yard Pack 10 Yard Roll 25 Yard Roll Full Roll (125 Yards)

Quantity

Key Specs

Weight: approx. 3.6 oz/yd² (123 g/m²), sold as 4 oz
Fiber Angle: 0°/90° (woven)
Widths: 27 in, 30 in
Compatible Resins: Epoxy, Polyester, Vinyl Ester
Resin Needed: About 4 oz per yard at 27 in wide, waste included
Ships: Folded under 10 yd, rolled from 10 yd

Order several sizes at once width by length, one add to cart

Width	1 Yard	3 Yard Pack	5 Yard Pack	10 Yard Roll	25 Yard Roll	Full Roll (125 Yards)
27"	27" 1 Yard $15.45	27" 3 Yard Pack $37.86	27" 5 Yard Pack $61.95	27" 10 Yard Roll $122.54	27" 25 Yard Roll $288.40	27" Full Roll (125 Yards) $1,399.99
30"	30" 1 Yard $13.99	30" 3 Yard Pack $40.57	30" 5 Yard Pack $66.95	30" 10 Yard Roll $131.30	30" 25 Yard Roll $309	30" Full Roll (125 Yards) $1,499.99

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Style 6522 is a 4 oz/yd² (136 g/m²) plain weave woven from S-2 glass, the high-strength fiber that gives roughly 25 to 30 percent more breaking strength than E-glass at the same weight. 0.0058" (0.15 mm) thick, in 27" and 30" widths.

Use it where every ounce counts: surfboard and SUP skins, kayak and canoe laminates, RC and drone parts, and light skins that still need to take a hit. It wets out clear like 4 oz E-glass. Works with epoxy, polyester or vinyl ester; pair it with epoxy to get the most out of the fiber.

See how to pick a cloth weight for the full comparison.

Specifications

Ideal for:

Surfboard and SUP skins, kayak and canoe laminates, RC and drone parts.

Size Options:

27", 30" wide, by the yard or 125 yd full roll.

Compatible with:

Epoxy, polyester and vinyl ester resins.

Weight:

4 oz per square yard

Style 6522 S-2 glass plain weave. Roughly 25 to 30 percent more breaking strength than 4 oz E-glass at the same weight.

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Technical Specifications

S-2 GlassPlain weaveWorks with Epoxy, Polyester, Vinyl EsterWoven in the USA

MaterialS-2 Glass

Industry Style #Style 6522

Weightapprox. 3.6 oz/yd² (123 g/m²), sold as 4 oz

Weave / ConstructionPlain weave

Fiber Orientation0°/90° (woven)

Thickness0.0058"

Available Widths27", 30"

Full Roll Length125 yd

Thread Count24 × 22

Tensile / Breaking Strength200 / 180 lb/in (warp / fill, greige)

Resin-to-Reinforcement Ratio~1:1 by weight

Compatible ResinsEpoxy, Polyester, Vinyl Ester

Best ForHigh-strength lightweight skins (S-glass)

Compare Fabrics

Product	4oz Fiberglass S Cloth - Style 6522You're viewingfrom $13.99	4oz Fiberglass E Clothfrom $7.95	6oz Fiberglass S Cloth - Style 6533from $18.45	8.9oz Fiberglass S Cloth - Style 6781 Satin Weavefrom $27.99
Material	S-2 Glass	E-Glass	S-2 Glass	S-2 Glass
Style	Style 6522	Style 1522	Style 6533	Style 6781
Weight	approx. 3.6 oz/yd² (123 g/m²), sold as 4 oz	approx. 3.6 oz/yd² (122 g/m²), sold as 4 oz	approx. 5.8 oz/yd² (197 g/m²), sold as 6 oz	8.9 oz/yd² (302 g/m²)
Weave	Plain weave	Plain weave	Plain weave	8-Harness Satin
Orientation	0°/90° (woven)	0°/90° (woven)	0°/90° (woven)	0°/90° (woven)
Thickness	0.0058"	0.0059"	0.008"	0.0095"
Widths	27", 30"	30", 50"	27", 30"	38"
Full Roll	125 yd	125 yd	125 yd	125 yd
Thread Count	24 × 22	24 × 22	18 × 18	58 × 54
Tensile Strength	200 / 180 lb/in (warp / fill, greige)	200 / 185 lb/in (warp / fill, greige)	≥260 / ≥235 lb/in (warp / fill, greige)	≥425 / ≥400 lb/in (warp / fill, greige)
Resin Ratio	~1:1 by weight	~1:1 by weight	~1:1 by weight	~1:1 by weight
Resins	Epoxy, Polyester, Vinyl Ester	Epoxy, Polyester, Vinyl Ester	Epoxy, Polyester, Vinyl Ester	Epoxy, Polyester, Vinyl Ester
Best For	High-strength lightweight skins (S-glass)	Lightweight repairs and surfboard work	Higher-strength general layup (S-glass)	Strong, drapable structural skins (S-glass)
	Selected	View	View	View

What To Expect When You Order Fabric Rolls

Can epoxy resin be used with fiberglass cloth?

Yes, epoxy resin is ideal for wetting out fiberglass cloth and other reinforcements like carbon fiber and Kevlar. It saturates the fabric well and cures into a strong, durable laminate.

Can fiberglass cloth be used on wood or metal?

Yes. With the right resin, fiberglass cloth bonds to wood, metal, foam, and cured fiberglass. Use epoxy for wood and metal, since it grips those substrates far better than polyester. Prep matters more than the cloth: sand to clean, bare material, remove all dust and oil, and wet out the surface before laying the cloth down.

What does the weight (oz) of fiberglass cloth mean?

The weight refers to ounces per square yard. Lighter cloth (e.g., 4oz) is more flexible and used for fine finishing; heavier cloth (e.g., 10oz) provides more strength and bulk.

How do I cut fiberglass cloth?

Use sharp scissors or a rotary cutter on a clean surface. To reduce fraying, run masking tape along the cut line and cut through the middle of the tape, and handle cut edges gently. Keep the cloth dry before layup, since moisture on the glass weakens the resin bond.

What is fiberglass cloth used for?

Fiberglass cloth is used to reinforce composite materials in applications like boat building, surfboard repairs, auto bodywork, and structural laminates. It’s combined with resin to form a strong, lightweight composite.

What’s the difference between fiberglass cloth and chopped mat?

Fiberglass cloth is woven for strength in specific directions, while chopped strand mat is made of randomly oriented fibers and is better for building bulk.