VFI®-630 Acrylic Flashing Grade

VFI®-630 Acrylic Flashing Grade is a water based acrylic elastomeric mastic that can cure in high builds. VFI-630 provides strength and flexibility to waterproof seals without cracking and ultraviolet stability to prevent degradation. This acrylic flashing grade has excellent adhesion to most surfaces and can be recoated with many different types of coatings and paints. VFI-630 was specifically engineered to create an easy to use, extremely low VOC water-based product.

Acrylic flashing grade that allows for high builds in areas to provide leak proof seals and is paintable.

Features & Benefits

  • Water-Based Acrylic Elastomeric Mastic
  • High Build Cures up to ½ inch with a Single Coat
  • Superior Flexibility, Build Up, and Adhesion
  • Resistant to Oxidation and High Temperatures
  • Lower VOC Compliant Content Measuring <50 g/L
  • Exceptional Durability from a Trusted Manufacturer
  • Formulated for Use Over: Metal, Mod/Bit, BUR, Single-Ply, Concrete, Spray Foam

Application Methods:

  • Chip Brush
  • Brush
  • Trowel

Available Packaging:

  • 5 Gallon
  • 2 Gallon
  • 1 Gallon

Physical Properties

  • Tensile Strength: 350 psi +/- 50
  • Elongation: 2
  • Flexibility @ 15°F Mandrel (Pass/Fail): Pass
  • Reflectance: 79
  • Accelerated Weatherability @1000hr: Pass
  • Fungi Resistance: Pass
  • Firm Set and Resistance to Water: Pass

Liquid Properties

  • Solids by Weight: 70.00%
  • Solids by Volume: 58.00%
  • Liquid Density: 10.6 lbs/gal
  • Specific Gravity: 1.20 g/ml
  • Viscosity: >50000 cps
  • Flash Point: >212° F
  • VOC: <50 g/L

Material Calculator


  • Miami Dade
  • FHBA

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