Sigmacover 246 / 410 / 430 / 620 by PPG is a range of two-component, polyamide-cured high-build epoxy primers/buildcoats designed for the durable protection of steel structures under atmospheric exposure. Formulated with zinc phosphate, this general-purpose epoxy coating is an essential component in protective coating systems across industrial and marine applications.
These versatile primers provide strong adhesion to steel, including over zinc silicate primers, and offer excellent flow and wetting characteristics for reliable, even coverage. They are easy to apply using airless spray and can cure in low temperatures down to 5°C (41°F)—making them ideal for year-round maintenance and new construction projects.
Key Features:
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High-build, polyamide epoxy primer/buildcoat
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Contains zinc phosphate for enhanced anti-corrosion performance
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Excellent adhesion to steel and zinc silicate primers
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Good wetting and flow properties for uniform application
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Cures at low temperatures (≥5°C / 41°F)
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Airless spray application for ease and efficiency
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Suitable for industrial, infrastructure, and marine environments
Recommended Uses:
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Steel structures exposed to atmospheric conditions
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General industrial and infrastructure projects
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Protective systems in marine and offshore applications
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Compatible primer layer under epoxy and polyurethane topcoats
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Ideal for maintenance and new construction coatings
