Sigmadur 188 / 520 / 550 by PPG is a two-component, aliphatic acrylic polyurethane finish coating engineered for exceptional durability and weather resistance. Designed for protective and decorative applications across a wide range of environments, this topcoat delivers long-lasting gloss and color retention, even under harsh atmospheric exposure.
Ideal for both industrial and marine structures, the Sigmadur range offers excellent recoatability—even after prolonged exposure—making it highly versatile for maintenance and repair projects. It cures at temperatures as low as -5°C (23°F) and resists splashes from a variety of oils and mild chemicals, ensuring long-term surface protection.
Unlimited recoatability – perfect for long-term maintenance cycles
Excellent resistance to UV, weather, and atmospheric exposure
Retains gloss and color over time
Cures in low temperatures down to -5°C (23°F)
Resistant to splashes of mineral/vegetable oils, paraffins, and mild chemicals
Smooth application and finish
Versatile for multiple environments
Structural steel and equipment in industrial environments
Offshore platforms and marine infrastructure
Chemical and petrochemical plants
Refineries and power plants
Facilities requiring extended aesthetic and corrosion protection
