Rustoleum Launches Coldclimate Epoxy Coating for Water Tanks

Ensuring the safety and purity of drinking water is a critical responsibility for municipalities and water treatment facilities. One of the most vulnerable components in this system is the storage tanks that hold potable water. These tanks must be protected from corrosion, especially during harsh winter conditions, to prevent contamination and maintain water quality. The RUST-OLEUM® 9200 System has been specifically engineered to meet this challenge.

The RUST-OLEUM® 9200 System is a high-performance, two-component phenolic amine epoxy coating designed to provide superior protection for potable water storage tanks and other maintenance coating applications requiring low-temperature curing. This system is certified to ANSI/NSF Std. 61, making it suitable for use in potable water tanks with capacities of 3,000 gallons or more. Its unique formulation allows for reliable application even in temperatures as low as 20°F (-7°C), ensuring year-round protection for critical water infrastructure.

• Direct-to-Metal (DTM) High-Build Epoxy: Eliminates the need for separate primer application, simplifying the coating process and reducing costs.
• Superior Corrosion Protection: Provides long-term protection that extends the service life of water storage facilities.
• Excellent Surface Wetting: Ensures complete contact with substrate for maximum adhesion.
• Early Moisture Resistance: Allows for faster curing in humid conditions, reducing downtime.
• Rapid Drying: Shortens project timelines and improves efficiency.
• Low VOC and HAPs Content: Complies with environmental regulations while minimizing health risks.
• ANSI/NSF Std. 61 Certified: Approved for use in potable water tanks of 3,000 gallons or more capacity.

Note: Base and activator components must be ordered separately. 5-gallon pails are slightly underfilled to allow addition of 1-gallon activator. Mixed capacity equals 5 gallons.

All Surfaces: Remove all dirt, grease, oil, salts, and chemical contaminants using Krud Kutter® Cleaner/Degreaser, commercial cleaners, or other suitable cleaning agents. Mold and mildew must be treated with chlorine-based cleaners or bleach solutions. Rinse thoroughly with clean water and allow to dry completely for optimal results.

Steel (Immersion Service): Prepare by abrasive blasting to minimum SSPC-SP-10 Near-White Metal (NACE 2) with a 1½-3 mil (40-75 micron) profile. Remove all weld slag and smooth rough welds by grinding. Sharpe edges should be rounded.

Concrete (Immersion Service): Prepare by hand or power tool cleaning to remove all loose or unsound concrete, masonry, or previous coatings. Very dense, non-porous concrete should be acid-etched or abrasive blasted to remove laitance and create a 1½-3 mil (40-75 micron) profile. New concrete should cure for 30 days before coating.

The mixing ratio is 4:1 (base:activator by volume). Pre-mix base and activator components separately before combining. The 316836 activator may require additional scraping of container sides to ensure complete reincorporation. Apply only when air temperatures are between 20°F (-7°C) and 100°F (38°C), with surface temperature not exceeding 120°F (49°C). Relative humidity should not exceed 85%.

For immersion service, apply a minimum of two coats, each within the recommended dry film thickness range. Alternating colors between coats is recommended. Best results are achieved through airless or conventional spray application, though brush and roller methods may be used with additional coats potentially required to achieve proper film build and coverage.

For potable water immersion applications, the coating must cure for 7 days at 75°F (24°C) before being placed in service. Thinner applications may require extended curing times to achieve full chemical resistance.

The RUST-OLEUM® 9200 System represents a significant advancement in protective coatings for potable water storage, particularly in challenging environmental conditions. Its ability to cure at low temperatures while maintaining NSF/ANSI 61 certification makes it an ideal solution for municipalities and water treatment facilities seeking reliable, long-term protection for their critical water storage infrastructure.