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Home / Home Improvement / Hardware / Weather Proofing & Tarps / Fill & Seal Triple Expanding Foam Sealant 12 Oz.

12Oz Triple Exp Foam Sealant
12Oz Triple Exp Foam Sealant

DOW® Fill & Seal Triple Expanding Foam Sealant 12 Oz.



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• Used primarily for sealing penetrations and air leaks in the building envelope
• Fills cracks, gaps and holes
• Not recommended for use around doors and windows
• Permanent, rigid, non-shrinking, waterproof/water resistant
• Sandable, paintable, moldable
• Straw applicator allows for rapid, yet precise, controlled flow
• Adheres to wood, masonry, glass and most plastics

Manufacturer's Part Number: #157859

Big R SKU: #7498500018

• Can be dispensed at any angle
• Closed cell for blocking radon gas and air infiltration
• Expands approximately 60-percent during cure
• 15 minute tack-free time; 1 hour cure time
• Flammable during dispensing
• U.L. Listed
• For outside applications paint when cured to protect against UV discoloration
• 240 degrees Fahrenheit max temperature for cured foam
• 12 oz. yields 275 linear feet in 3/8" bead; 20oz. yields 460 linear feet in 3/8" bead

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