Gelcoat: What It Is, How It’s Used, and How to Repair It Gelcoat is the outermost protective and cosmetic layer used on fiberglass parts. Understanding how gelcoat works — and how to apply or repair it correctly — is critical to achieving long-lasting performance and professional results. What Is Gelcoat? Gelcoat is a pigmented polyester or vinyl ester resin applied to the surface of fiberglass parts. It creates a smooth, high-gloss finish while protecting the underlying laminate from wat...
Hullgard Extra Epoxy Primer Application Guide How and Why to Use Hullgard Extra Hullgard Extra Epoxy Primer is a high-build, anticorrosive substrate primer designed to create a stable foundation for fairing compounds and finishing systems. It is commonly used after corrosion primers like Max Cor CF to build film thickness, improve adhesion, and prepare surfaces for Awlfair and topcoat systems. This primer is ideal for aluminum, steel, and fiberglass substrates where long-term durab...
Polyester Resin Guide: How to Use It, Types, and What You Need Short Answer Polyester resin is the most widely used material for fiberglass repair, boat building, and composite construction. It is affordable, fast-curing, and ideal for laminating fiberglass cloth, mat, and structural parts. --- What is Polyester Resin? Polyester resin is a thermosetting resin used in fiberglass applications to create strong, durable composite structures. It is activated using MEKP catalyst and cures throug...
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