GulfCoat™Ultramarine Blue

GulfCoat™Ultramarine Clear

Spray Applied Corrosion Resistant Coating

GulfCoat™ Contractor Series Coil Coating is new from Modine Coatings. GulfCoat Ultramarine Blue and Ultramarine Clear were developed in response to customer demand for a protective coating to be applied on small jobs and or in remote areas. This aerosol product will provide coverage for 6 to 8 Square Feet of coil face area, depending on users spray technique.

GulfCoat Ultramarine coatings provide a HVAC COIL coating system for added corrosion protection on aluminum and copper finned RTPF and MCHX coils. GulfCoat coatings help to reduce the accelerated corrosion of HVAC coils. By following the coating and maintenance instructions, end users should expect extended life cycles and keep the energy consumption to a nominal level.


Surface must be free of grease, rust and wax. Prior to coating, follow these steps:

  1. Clean coils with appropriate cleaner- use GulfCoat Surface Prep
  2. Rinse with clean water
  3. Allow coil to thoroughly dry
  4. Mask off or protect areas from overspray.
  5. Allow product can to warm to room temperature.

Mask off or protect areas from overspray. Allow can to warm to room temperature. Shake until mixing ball rattles, then continue to shake for two minutes. Move can with light to medium strokes. Let paint become tacky between coats. After use, invert can and spray to clear valve.

Product Description

GulfCoat Ultramarine Blue and Ultramarine Clear corrosion resistant coating is specifically designed for the protection of HVAC coils and components. GulfCoat Ultramarine Blue is formulated to improve adhesion, moisture resistance, UV protection and corrosion resistance. The product can be applied on-site or at your premises after HVAC units have been manufactured and installed.


HVAC coil and components shall have GulfCoat Ultramarine Blue and Ultramarine Clear spray applied with no runs or sags. The spray coating process should ensure a uniform dry film thickness of 10-36 μm (0.4 -1.4 mils) and meet 5B rating for crosshatch adhesion per ASTM D3359-09. Corrosion durability shall be confirmed through testing to no less than 3, 000 hours salt spray resistance per DIN 53167 (ASTM B117-11) using aluminum test coupons.

Applications Ideally Suited for GulfCoat Ultramarine Blue

  • Heat Exchanger Coils (water, condenser, evaporator, DX)
  • Mini-Splits
  • Packaged Rooftops
  • Condensing Units
  • Modular Air-Handlers
  • Air-Cooled Chillers

Resistance to:

Corrosion Resistance

GulfCoat Ultramarine Blue and Ultramarine Clear Blue has a robust synthetic multi-polymer resin backbone that is suitable for most environments and will maintain its appearance after many years exposure to the elements.

UV Degradation

Built in enhanced UV inhibitors form a protective barrier throughout the paint film. As a result, UV degradation of individual polymer molecules are reduced and the film integrity maintained.

Gloss Retention

A high gloss finish is applied that is smooth, limits dirt and debris buildup and allows for easy equipment cleaning.