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Yellowing is a common concern with epoxy gelcoats, particularly when clarity and shine are important in artistic or decorative projects. With the right approach and materials, you can keep your work looking crystal clear for longer.
Choose a Resin with UV Protection
Ultraviolet (UV) light is a primary reason for yellowing in most epoxy systems. Opting for an epoxy resin specifically formulated with a UV filter or stabiliser is the most effective way to minimise this risk. Products such as “Art Pro” – Clear Epoxy Resin for Artists and Surface Coating are designed with UV protection in mind, making them ideal for surfaces where clarity must last.
Application Tips for Lasting Clarity
Proper application is just as important as resin selection. Mix your epoxy thoroughly, according to the manufacturer’s instructions, to ensure an even cure and consistent protection. Apply in recommended layer thickness, usually between 1 and 10 mm for art resins, to create a robust, clear finish that’s less prone to discolouration.
- Apply in a dust-free, well-ventilated area away from direct sunlight.
- Avoid exceeding the suggested pour depth for your chosen product.
- Allow each coat to fully cure before using or displaying the item.
Care and Maintenance
Even with premium, UV-stabilised resins, exposure to strong sunlight can gradually cause yellowing. Store finished gelcoated surfaces out of direct sunlight whenever possible, and regularly wipe your surfaces clean with gentle, non-abrasive cloths. For items regularly exposed to light, such as trays or coasters, consider rotating or storing them when not in use to further protect their clarity.
When This Matters
Preventing yellowing is crucial for projects meant to showcase transparency or bright colours, like artistic trays, wall panels, and resin surfaces that act as decorative centrepieces. If your gelcoat will be regularly visible, prioritising UV protection will help preserve its beauty.
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Proactive steps and mindful resin selection can ensure your epoxy gelcoat projects retain their clarity and appeal. For more tips on working with epoxy gelcoats, visit our complete guide on how to make an epoxy gelcoat.