Technically, yes, you can paint composite decking, but it’s generally not recommended. Most composite decking boards, particularly capped varieties, are engineered with a protective outer shell that resists moisture, fading, and staining. This makes paint unlikely to adhere properly and can void the manufacturer’s warranty.
Low-Maintenance by design: One of the key benefits of composite decking is that it never needs sanding, sealing, or painting, making it a true low-maintenance decking solution.
Warranty risks: Altering the board’s surface may compromise product guarantees, especially for UV and stain resistance.
For older, uncapped composite boards that have faded significantly or suffered surface damage, painting may be a last-resort option.
Ultimately, for a long-lasting and eco-friendly outdoor decking solution, it’s best to choose a composite board in a colour you’re happy with long-term, avoiding the need to paint altogether. Proper deck installation and minimal upkeep will ensure a consistent, durable finish for years to come.