Uses

• Reduction of external temperature of hot surfaces as an aid to worker safety
• Reduction of heat loss for energy savings
• Stops condensation
• Stops CUI (corrosion under insulation)

Application

Although HPC™ Coating can be applied by non-professionals, SPI recommends using a SPI certified applicator.

Preparation

• Surface must be clean and completely dry, with no loose debris or particles, rust, dirt, oil, films or residues of any kind. HPC™ Coating will cover previous coatings, provided they are fully adhered to the surface and no gloss surface
• Mechanically stir, as formula will tighten and give the appearance of cake or putty. Stirring loosens and relaxes the consistency.

Application methods

• Graco Texspray RTX 1500 using 2mm nozzle
• Over hot surfaces apply a 50 wet mil (1.25 mm) primer coat to allow a steaming-off and cooling of surface to avoid bubbles, and then increase thickness with additional coats as needed

Applied rate

• 80 sq. ft./gal. (7.4 sq.m./gal.) as primer
• 2.4 - 9.6 sq. ft./gal. (0.22 – 0.9 sq.m./gal.) with build coats (125 mils - 500 mils dry per coat)

Film thickness

• 50 mil wet (1.25 mm) as primer
• 125 - 800 mils dry (3 – 20 mm) with build coats depending on need to control different ranges of heat
• Fire Control System 800 mils - 1600 mils (20 mm - 40 mm) as the primer before Omega Fire™ top coat.

Dry times

• 10 minutes as primer over hot surface, then increase thickness as needed.
• 24 hours to set

Precautions

• Do not use for exterior applications unless top coated with Super Therm® for long term durabilit

Limitations

• Do not use for underwater applications.
• HPC™ Coating is light yellow in color and rough in texture
• Not recommended as the only fire protection material to be used in residential or industrial construction
• Do not use as floor coating
• Not UV protected. For external use overcoat with Super Therm®