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American Gilsonite Company provides GILSONITE® uintaite, exclusively produced from natural (renewable) hydrocarbon resin and  is used in many industrial applications including asphalt modification.

HMA Modifier

The GILSONITE® uintaite  product is versatile, cost-effective and adds a new dimension of strength to asphalt.


GILSONITE®  is a naturally occurring hydrocarbon resin that adds tremendous strength, durability and longevity to asphalt roads. It is a cost-effective additive with unmatched performance.


No other additive can match all the benefits of GILSONITE®:


  • High strength and fatigue resistance > Reduced temperature susceptibility

  • Superior deformation resistance > Increased resistance to water stripping

  • Reduced pavement thickness > Safe and environmentally responsible

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