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HydroStop® Flashing Brush 4 inch

In stock

4" Chip brush used for cutting in smaller areas, trim work and test areas.

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.


Benefits of HydroStop® PremiumCoat® Butter Grade Flashing include:
  • 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
Specifications (All Dimensions are Nominal)
Solids by Volume66% (±2)
VOC<50 g/L
Tensile Strength325 psi (±25) [ASTM D412]
Solids by Volume: 66% (±2)
VOC: <50 g/L
Tensile Strength: 325 psi (±25) [ASTM D412]
FBCState of Florida approved
Miami-Dade CountyMiami-Dade County Product Control approved
FBC: State of Florida approved
Miami-Dade County: Miami-Dade County Product Control approved
Testing Methods & Applicable Standards
ASTM D412Yes
ASTM D412: Yes
Shipping and Packaging
Bucket2-gallon (7.6 liter)
Pail5-gallon (18.9 liter)
Shelf Life18 months 50°F – 90°F (10°C – 32°C)
Bucket: 2-gallon (7.6 liter)
Pail: 5-gallon (18.9 liter)
Shelf Life: 18 months 50°F – 90°F (10°C – 32°C)



Data Sheets

Details (By Roof Area)

Safety Data Sheets (SDS)


Technical Bulletins

Technical Information

Warranty - Guarantee

  • Applying Liquid Membrane HydroStop | GAF VR
    Be on the roof with the contractors as they install our HydroStop Liquid Membrane system. Learn more at: