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!

  • Styrene Thinner

    General Purpose Styrene
    5 star rating
    Styrene is the recommended thinner when using polyester and vinyl ester resins and gel coats. All polyester and...
  • Styrene Wax

    Get a Complete Cure for Polyester Resins
    4.5 star rating
    Add Styrene Wax to non-waxed polyester resin and gel coat to prevent the prolonged tackiness associated with thin...
  • Non-Skid Rubber Additive

    Safe for Gel Coats and Paint
    5 star rating
    Fibre Glast's Non-Skid Rubber Additives are ideal for creating a durable, safe, non-skid surfaces. These...
  • Gel Coat Thickness Gauge

    Simple, Precise Measure for Gel Coat Thickness
    5 star rating
    Our gel coat thickness gauge is the perfect tool for measuring wet mil thickness as you apply your gel coat. It...
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  • 1 Liter High-Pressure Gel Coat Spray Gun

    The Capacity and Customization Needed For Any Project
    5 star rating
    The #134-A 1 Liter High Pressure Gel Coat Spray Gun is ideal for larger repairs and small to medium projects, with a...
  • 0.6 Liter Gel Coat Touch-Up Spray Gun

    Customize your Spray Pattern for Heavy-Duty Jobs
    5 star rating
    Not every spray application is the same. Why not have one gun that allows you to adjust spray width and volume? Our...
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  • Gel Coat Cup Gun

    Efficient & Affordable: Unique Gel Coat Spray Gun
    3.5 star rating
    You no longer have to invest in high-cost catalyst injector systems to produce high-quality parts. This unique Gel...
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  • Acetone

    Industry Standard for Dissolving Resin
    5 star rating
    Acetone is a powerful solvent, used in the composite industry as the standard for cleaning and degreasing. It will...
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#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 and extremely durable parts.

Want to learn more about Polyester Resins? Fibre Glast has a free Learning Center with helpful white papers, including: About Resins, Mold Construction, Molding Fiberglass, and Fundamentals of Fiberglass. You can also compare 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 the common problems to avoid.

You can place your order right here on our website or, if you have any questions, call 1.800.838.8984 | 8 a.m. - 5 p.m. EST Mon-Fri.

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