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Polyester Resins are the most widely used resins in the composites industry. Sometimes referred to as Fiberglass Resins, Polyester Resins are less expensive, offer some corrosion resistance, and are more forgiving than epoxies. The majority of all fiberglass parts are constructed using Polyester Resins because they are easy to use, fast curing, and tolerant of temperature and catalyst extremes.

Premium polyester gel coat delivers superior cosmetics and durability for parts and molds. Choose from traditional gel coats such as white, neutral, and clear, as well as orange or black tooling gel coats. All of our gel coats resist UV degradation and water absorption. To learn more about gel coat please visit our Learning Center articles "Gel Coat Application Guide" and "Gel Coat Troubleshooting Guide".

Shop our selection of polyester resins, gel coats, spray guns, and supplies below!

Polyester Molding Resin

Polyester Molding Resin

General Purpose Resin for Part/Mold Fabrication
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Isophthalic Polyester Resin

Isophthalic Polyester Resin

Build Strength and Stability for Tough Parts
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White Gel Coat

White Gel Coat

Durable, Lasting Protection for Boats and Molds
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Clear Gel Coat

Clear Gel Coat

Get a Crystal-Clear, High-Gloss, Protective Finish
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Neutral Gel Coat

Neutral Gel Coat

Designed to Deliver Superior Color Qualities
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Orange Tooling Gel Coat

Orange Tooling Gel Coat

High Gloss and Superior Hardness for Molds
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Black Tooling Gel Coat

Black Tooling Gel Coat

Build Lasting Durability for Molds

MEKP Hardener

MEKP Hardener

Industry Standard Catalyst
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Styrene Thinner

Styrene Thinner

General Purpose Styrene
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Styrene Wax

Styrene Wax

Get a Complete Cure for Polyester Resins
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Custom Color Gel Coat

Custom Color Gel Coat

Get Vibrant, Durable Color and Resist Damage

Non-Skid Rubber Additive

Non-Skid Rubber Additive

Safe for Gel Coats and Paint
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Gel Coat Thickness Gauge

Gel Coat Thickness Gauge

Simple, Precise Measure for Gel Coat Thickness

1 Liter High-Pressure Gel Coat Spray Gun

1 Liter High-Pressure Gel Coat Spray Gun

The Capacity and Customization Needed For Any Project

0.6 Liter Gel Coat Touch-Up Spray Gun

0.6 Liter Gel Coat Touch-Up Spray Gun

Customize your Spray Pattern for Heavy-Duty Jobs
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Gel Coat Cup Gun

Gel Coat Cup Gun

Efficient & Affordable: Unique Gel Coat Spray Gun
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Acetone

Acetone

Industry Standard for Dissolving Resin

Acetone Dispenser

Acetone Dispenser

The Safest Way to Keep Acetone at the Ready

Latex Gloves

Latex Gloves

Protect Hands for Most Lamination Projects

Nitrile Gloves

Nitrile Gloves

Excellent for General Use

Safety Goggles

Safety Goggles

Impact Resistant and Ventilated for Comfort

Two Strap Dust and Mist Mask (Box of 20)

Two Strap Dust and Mist Mask (Box of 20)

A Simple Measure for Safety

Organic Vapor Respirator

Organic Vapor Respirator

Stay Safe, Stay Comfortable

Disposable Lab Coat

Disposable Lab Coat

Comfortable, Safe Coverage, Easy Clean-Up

Disposable Pants

Disposable Pants

Slide-on, Slide-off Protection

Disposable Boot Cover

Disposable Boot Cover

Protect Footwear and Keep Floors Clean

Disposable Body Suit

Disposable Body Suit

Full-Body Protection in One Piece

#77 Polyester Molding Resin is a wax-free, general purpose fiberglass resin. This resin is a great choice for building low-cost molds, or for general fiberglass part fabrication. #90 Isophthalic Polyester Resin is a durable, dimensionally stable, corrosion resistant resin. The 225°F service temperature and low shrinkage properties of this resin are ideal for making dimensionally stable molds or extremely durable parts.

Want to learn more about Polyester Resins? Fibre Glast has a free Learning Center with helpful white papers like: About Resins, Mold Construction, Molding Fiberglass, and Fundamentals of Fiberglass. You can also contrast Polyester Resin with Epoxy Resin and Vinyl Ester Resin in the Fibre Glast blog article, Choosing the Right Resin.

Proper gel coat application can be a challenge for professionals and is probably the most common problem area for those new to composite work. Save yourself some wasted time and material. Before starting your gel coat project, read through the Gel Coat Troubleshooting Guide in our free online Learning Center, to learn what common problems to avoid.

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