1. A protective resin coating applied to the surface of fiberglass or composite materials to provide a smooth, durable finish and protect against weathering and damage.
Usage: commonly used in marine and automotive industries

1. To apply a gelcoat to a fiberglass or composite surface.
Usage: technical term used in manufacturing and repair

Examples

• The boat's hull was protected by a thick layer of gelcoat.
• The manufacturer applied a white gelcoat to the fiberglass panels.
• Scratches in the gelcoat can be repaired with touch-up paint.
• Workers carefully gelcoated the new surfboard before shipping.
• The gelcoat on the yacht had faded after years of sun exposure.
• To prevent corrosion, the composite parts were gelcoated with a UV-resistant formula.