Painting & finishing
In general, Exel Composites are resistant to both weathering and chemicals and so do not require paint for protection.
However, if a composite surface is exposed through sanding or cutting, then it will need a protective coat of paint or resin. Any shape or profile will always have at least two exposed ends where it has been cut to the desired length.
Coatings can also extend the life of a composites’ surface appearance by shielding it from ultraviolet light. Without a coating, surface fading will occur much faster.
If you want to apply a decorative coating, we recommend you use epoxy or urethane paints.
Polyurethane paint provides good protection from ultraviolet light as well as good seal.
Epoxy/urethane coatings or catalyzed polyester resin can also be used for sealing composites’ surfaces.
For decorative finishes, epoxy and urethane paints are recommended. Acrylic lacquer, vinyls and oil-based paints can also be used effectively.
A composite’s surface may require light sanding and cleaning before painting, but this depends on the paint and the release agent used in the composites’ manufacture. Refer to the manufacturer’s advice for your selected paint. If you are unsure about your composites’ release agent, talk to your Exel representative.
To eliminate the risk of surface corrosion. Epoxy/urethane paint or catalyzed polyester resin can be used for an effective protective coating.