Epoxy MS403 – Marine Proof is a high-performance, two-component, isocyanate-cured epoxy coating specifically developed for coastal, marine, and high-corrosion environments.
This self-priming epoxy system offers excellent resistance to chemicals, UV exposure, salt air, and harsh weather conditions. Designed for metal substrates, Epoxy MS403 delivers outstanding durability, corrosion protection, and a high-gloss finish, making it ideal for demanding exterior and marine applications.
Application Areas:
- Interior and exterior applications
- Coastal and marine environments
- Metal substrates
- Industrial and decorative applications
Product Features:
- Two-component epoxy system
- Self-priming – no separate primer required
- Excellent corrosion and rust inhibition
- UV resistant
- Acid resistant
- Hard-wearing and scratch-resistant
- High-gloss protective finish
- Easy application by brush, roller, or spray
- Designed for harsh coastal and marine conditions
Application Details:
For Brush or Roller Application:
- Apply 1 coat of Epoxy MS403 – Marine Proof to achieve proper penetration
- Allow 4 hours drying time between coats
- In cold or wet conditions, allow an additional 6 hours
- Porous surfaces may require a second coat to prevent colour patching
For Compressor Spray Gun Application:
- Thin with Xylene if required (Max 20%)
- Apply 1 coat with a 4-hour drying time between coats
- In cold or wet conditions, allow an additional 6 hours
- Porous surfaces may require a second coat for uniform colour and protection





