PremiumCoat® Butter Grade Flashing

PremiumCoat® Butter Grade Flashing

Why HydroStop® PremiumCoat® Butter Grade Flashing?

HydroStop® PremiumCoat® Butter Grade Flashing is manufactured from an acrylic resin specifically designed to provide increased tensile strength and elongation in “level out” low-lying roof areas. Its lightweight, spreadable consistency is permanently flexible and contains no plasticizers.


  • Lightweight, spreadable consistency
  • Permanently flexible, contains no plasticizers 100% acrylic, -35° flexibility
  • Extra high film build, over 1/8th up to 3/16th inch (3 – 5 mm)
  • Bonds to most surfaces and all common roofing materials
  • Meets VOC emissions and regulations to eliminate facility downtime during installation


HydroStop® PremiumCoat® Butter Grade Flashing adheres to a variety of substrates including asphaltic roofing, metal, concrete, wood, Hypalon®, and SPF. It can be used to “level out” low-lying roof areas less than/equal to ¼" in depth, bridge small gaps between plywood seams, and fill small voids on metal roofs. Its thick, buttery consistency allows it to easily be worked into heavily alligatored areas in weathered built-up roofing.


Product Properties

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