How to Mix Epoxy Resin Carefully for Gelcoats

Proper mixing of epoxy resin is vital for achieving a smooth, durable gelcoat. This step sets the foundation for clarity, strength, and lasting results—whether your project is practical or purely decorative.

Get the Mixing Ratio Right

Epoxy resins rely on precise ratios for the reaction to work correctly. For example, Art Pro uses a 3:2 mix by weight, while “One-2-One” simplifies things with a 1:1 ratio by volume. Always consult the instructions and measure accurately. Using too much or too little hardener can leave your gelcoat sticky or brittle, so double-check before you begin.

Thorough Mixing Makes All the Difference

Poorly mixed resin can result in cloudy patches or weak spots in your gelcoat. Pour the measured resin and hardener into a clean container and stir them together, scraping the sides and bottom for two to three minutes. For larger batches, consider transferring to a second container and mixing again to ensure consistency throughout. Work slowly and steadily to minimise air bubbles while blending.

When This Matters

Projects where visual clarity is crucial, such as coasters, trays, and wall art
Applications requiring strong, even protection like kitchen or bathroom surfaces
Fast-curing jobs, where an incorrect mix can spoil the finish before you have time to work

Related guides

How To Make An Epoxy Gelcoat

Taking care during the mixing stage helps you achieve a flawless epoxy gelcoat, setting a solid foundation for your project. Explore more expert advice and creative ideas in our main guide on how to make an epoxy gelcoat.