Archatrak has specifically selected FRP resins, fillers and additives designed for maximum outdoor durability and fire resistance. Although there are four different types of resin systems available in the United States, only Type-I resins combined with Aluminum Hydroxide filler (not Calcium Carbonate) can provide the fire retardant and smoke suppression properties necessary for most exterior boardwalk applications.
Type-O – polyester resin system with mid-level chemical resistance. Typically used in commercial or light industrial applications, especially where moisture is prevalent.
Type-I – isophthalic resin system. Archatrak’s standard and the most popular resin system for more demanding industrial, marine and boardwalk applications. Provides long-lasting performance in areas where corrosion is an issue.
Type-V – vinyl ester resin system. Provides the highest chemical resistance and typically used in environments where FRP products are subject to frequent and direct contact with the harshest of chemicals.
Type-P – phenolic resin system. Used where fire resistance, low flame spread index, smoke suppression and low toxic fumes are critical. Typically used in offshore applications and confined spaces.
Typically, FRP gratings will be rated in accordance with ASTM-E 84 as non-combustible with a flame and smoke spread level significantly less than 25. UV absorbers such as UV9 must also be incorporated into the resin system for long-term UV protection.