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18oz Fiberglass E Cloth

18oz Fiberglass E Cloth

SKU:FG-754450-01

Regular price $17.49 USD
Sale price $17.49 USD Regular price $19.44 USD
Unit price $17.49  per  yd
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Shipping calculated at checkout.

94 in stock

Width: 50"
Length: 1 Yard
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This 18oz fiberglass cloth is designed for heavy-duty use and allows for quick and efficient build-up of layers.

At 18 oz/yd2 in a plain weave, this is heavy structural cloth: one ply builds thickness fast where 6 oz would take three. Run it 50 inches wide over transoms, stringers and hull sections in epoxy, polyester or vinyl ester. Not sure which weight your job calls for? See our guide to which fiberglass cloth weight to use.

Ideal for:

- Mid-Heavyweight Marine & Auto Repairs

- boat construction and repair to reinforce hulls, stringers, and transoms.

- tooling molds used in repeat production of marine or automotive parts.

- panel repair or fabrication for RVs, trailers, and off-road vehicles

Size Options:

Available in various widths to suit your project needs.

Weight:

18oz/sqft

162oz/yard

Compatible with:

- Epoxy resin

- Polyester

- Vinyl ester resins for a flawless bond.

Medium-to-heavyweight fiberglass fabric that's widely used in marine, automotive, and structural applications where a solid balance of strength, durability, and flexibility is needed. It's more manageable than 40oz cloth but still offers significant reinforcement.

18oz Fiberglass Cloth - By The Yard

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Technical Specifications


E-GlassPlain weave (2-end cloth)Works with Epoxy, Polyester, Vinyl Ester
MaterialE-Glass
Weight18 oz/yd²
Weave / ConstructionPlain weave (2-end cloth)
Fiber Orientation0°/90° (woven)
Available Widths50"
Full Roll Length125 yd
Resin-to-Reinforcement Ratio~1:1 by weight
Compatible ResinsEpoxy, Polyester, Vinyl Ester
Best ForHeavy structural reinforcement

Compare Fabrics


Product18oz Fiberglass E Cloth18oz Fiberglass E ClothYou're viewingfrom $17.49 40oz Fiberglass E Cloth40oz Fiberglass E Clothfrom $32.44 18oz Woven Roving18oz Woven Rovingfrom $19.44 24oz Woven Roving24oz Woven Rovingfrom $22.39
MaterialE-GlassE-GlassE-GlassE-Glass
Weight18 oz/yd²40 oz/yd²18 oz/yd²24 oz/yd²
WeavePlain weave (2-end cloth)Double plain weaveWoven RovingWoven Roving
Orientation0°/90° (woven)0°/90° (woven)0°/90° (woven)0°/90° (woven)
Widths50"38"50"50"
Full Roll125 ydapprox. 70 yd125 ydapprox. 52 yd
Thread Count~5 × 4~5 × 4
Resin Ratio~1:1 by weight~1:1 by weight~1:1 by weight~1:1 by weight
ResinsEpoxy, Polyester, Vinyl EsterEpoxy, Polyester, Vinyl EsterEpoxy, Polyester, Vinyl EsterEpoxy, Polyester, Vinyl Ester
Best ForHeavy structural reinforcementVery heavy structural buildFast bulk build between mat layersHeavy bulk build between mat layers
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What To Expect When You Order Fabric Rolls

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.

Yes. With the right resin, 10 oz 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.

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.

Use sharp scissors or a utility knife. To reduce fraying, you can lightly mist the cloth with water or use tape to mark the cutting line.

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.

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.