VFI®-735 HFO Spray Polyurethane Foam

VFI®-735 HFO Spray Polyurethane Foam is a 3 pounds per cubic foot density, HFO blown roofing foam that provides roofing insulation and is designed to be top coated. With excellent adhesion to most substrates, VFI-735 can be applied to almost any type of roof. Different speed variations are available (Summer, Fall, and Winter) that provide an easy to spray, smooth foam, in any condition. When used with a VFI approved top coat, VFI-735 will create a seamless monolithic roof that is fully waterproofed and insulated. This product is approved for use in the states of California, New Jersey, Washington, and Vermont.

Two-part 3 PCF polyurethane HFO roofing spray foam that provides seamless coverage for uniform insulation.

Features & Benefits

  • 3 PCF Polyurethane Roofing Insulation Foam
  • Self-Flashing to Create Seamless Monolithic Surface
  • Absolute Sustainability with Proper Maintenance
  • Unparalleled Energy Efficiency Controls Utility Costs
  • 3 Reactivity Grades – Regular (R), Winter (W), Summer (S)
  • Exceptional Durability from a Trusted Manufacturer
  • Formulated for Use Over: Metal, Mod/Bit, BUR, Single-Ply, Concrete
  • Approved for use in the states of California, New Jersey, Washington, and Vermont.

Application Methods:

  • Spray

Available Packaging:

  • Drum

Physical Properties

  • Tensile Strength: 75 psi
  • Solid Material Density: 2.75 PCF
  • Closed Cell Content: 91%
  • Thermal Resistance: 6.9
  • Water Vapor Permeability: 1.1 perm
  • Water Absorption: 0

Liquid Properties

  • Liquid Density A Side: 10.18 lbs/gal
  • Liquid Density B Side: 9.73 lbs/gal
  • Mixed Liquid Density: 9.96 lbs/gal
  • Specific Gravity A Side: 1.22 g/ml
  • Specific Gravity B Side: 1.16 g/ml
  • Specific Gravity Mixed: 1.19 g/ml
  • Ratio by Volume (A:B): 1A:1B
  • Viscosity A Side: 175 cps
  • Viscosity B Side: 1200 cps
  • Cream Time: 10 seconds
  • Rise Time: 40 seconds
  • Tack Free: 29 seconds

Material Calculator


  • UL

Related Products