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.

Related Industries:

Application Methods:

  • Spray

Available Packaging:

  • Drum

Product Details

  • Product Color: Standard color available is neutral. For additional premium colors or color matching services contact Volatile Free, Inc.
  • UV Stability: This product is NOT UV color stable and has no long-term UV testing. For additional information contact Volatile Free, Inc.
  • Coverage/Thickness Requirement: Contact Volatile Free, Inc. for thickness requirements and specifications.
  • Storage Stability/Shelf Life: 12-month shelf life from date of manufacture when stored and sealed in unopened containers between 40°F - 75°F. Opened containers may be resealed with a nitrogen purge, but shelf life will be significantly shortened. Material should be brought to a minimum temperature of 65°F before use.
  • Equipment: For instructions and equipment requirements, contact Volatile Free, Inc.
  • Surface Preparation: All surfaces should be cleaned, prepped and free of any oils, dirt or debris. Contact Volatile Free Inc. with any additional questions.
  • Mixing: Pre-mixing Poly (B) components until uniform is required before injecting or spraying. Mix times may vary depending on volume and mixing method, please contact Volatile Free, Inc. for more information on any specific mixing questions and requirements.
  • Material Application: Temperature should be between 50°F and 100°F when the product is being used. The pot life will shorten with any increases in temperature beyond 72°F. Contact Volatile Free, Inc. for more information on recommended release agents or sealants.
  • Primers: Contact Volatile Free, Inc. on any primer questions.
  • Cleanup: Preferred clean-up solvent is xylene or MEK. Please contact Volatile Free, Inc. for more information on clean-up of equipment and tools.
  • Thinning: Do not thin prior to application.
  • Precautions: This product contains a chemical blowing agent and should be kept out of direct sunlight to prevent the buildup of pressure. Release bungs slowly before use to relieve any built-up pressure within the container. Contains isocyanate that may be irritating to the skin and is toxic if inhaled as particulate matter. See Safety Data Sheet for complete safety data. Do not add any foreign material to this product. Avoid prolonged breathing of vapors and prolonged or repeated skin contact. Use only with adequate ventilation. This product is NOT APPROVED for use in the states of California, New Jersey, Washington, and Vermont. Contact Volatile Free, Inc. for additional information.

VFI®-735 HFO Spray Polyurethane Foam Physical Properties

  • Tensile Strenth (ASTM D-412): 75 psi
  • Solid Material Density : 2.75 PCF
  • Closed Cell Content (ASTM D-2856): 91%
  • Thermal Resistance (ASTM C-518): 6.9
  • Water Vapor Permeability (ASTM E96): 1.1 perm
  • Water Absorption (ASTM D2842): 0

VFI®-735 HFO Spray Polyurethane Foam Liquid Properties

  • Liquid Density A Side (ASTM D 2939): 10.18 lbs/gal
  • Liquid Density B Side (ASTM D 2939): 9.73 lbs/gal
  • Mixed Liquid Density (ASTM D 2939): 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 (ASTM D2196): 175 cps
  • Viscosity B Side (ASTM D2196): 1200 cps
  • Cream Time: 10 seconds
  • Rise Time: 40 seconds
  • Tack Free: 29 seconds

Systems Used In



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Product Data Sheets