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Dow FROTH-PAK Foam Sealant is a two-component, quick-cure polyurethane spray foam that fills cavities, penetrations and cracks. FROTH-PAK Foam Sealant is a chemically cured foam, significantly reducing curing time. It dispenses, expands and becomes tack-free in seconds. The product will skin over in 30-40 seconds and will cure in minutes.


  • A professional use, 2-component polyurethane spray foam system typically used as a foam-insulating sealant to fill cavities, wall and floor penetrations, cracks, and expansion joints
  • Chemical curing allows 2-part polyurethane foam to be dispensed, expand, and become tack-free in seconds
  • It will skin over in 30-40 seconds and be completely cured in under 1 minute
  • Froth-Pak 12 Spray Foam Sealant System includes: Iso (A) can, Polyol (B) can, thumb-controlled spray dispenser with hoses, shoulder strap assembly, 2 cone white spray nozzles (187918)
  • Froth-Pak 12 is great for small jobs; yield is 12 board ft at 1 inch thickness

Basic Use
FROTH-PAK Foam Sealant can be used in interior or exterior commercial, residential, agricultural, industrial and institutional settings. If used in an exterior setting, a coating must be applied for ultraviolet (UV) protection. Typical commercial applications include spray polyurethane foam roof repair and sealing roof perimeters and parapet walls.

Residential uses include:

  • Roof and wall junctions
  • Wall and attic penetrations
  • E lectrical, mechanical and plumbing penetrations
  • Other gaps, cracks or crevices in the building envelope

Property Test Methods Value
Basis - Two component polyurethane foam
UL Classifi ed (Class 1) MSHA 25/350
Percent Closed Cell Content ASTM D-2856 92
Thermal Resistance (R Value) ASTM C-518 6.99/in
Open Time N/A 15 sec
Compressive Strength ASTM D-1621 22 psi
Tensile Strength ASTM D-1623 40.1 psi
Shear Strength ASTM C-273 23.9 psi
Elongation at Break No Data No Data
Water Vapor Transmission ASTM E-96 3
Max Service Temperature of Foam - 240F
Shelf Life 18 months when stored upright
Yield Froth-Pak 12: 12 board ft, 1 cu ft


Froth-Pak 12:
Kit Includes Iso (A) can,
Polyol (B) can,
thumbcontrolled spray dispenser with hoses,
shoulder strap assembly,
two cone white spray nozzles (187918).
Part Code W-FRPK12 (Case of 12 Kits)
W-1FRPK12 (Single Kit)