Great Stuff Window & Door Insulating Foam Sealant 20 oz.

Give your home lasting protection against drafts, moisture and energy loss with Great Stuff Window & Door Insulating Foam Sealant. This 20 oz can of low-pressure, minimal-expanding polyurethane foam is specially formulated to seal gaps between window or door frames and their rough openings. In just minutes, it forms an airtight, water-resistant barrier that helps reduce heating and cooling costs while withstanding temperature changes and weather extremes.

Thanks to its user-friendly straw applicator and tack-free cure in about 8 minutes, you’ll get pinpoint control and a clean finish every time. Once fully cured, the foam remains flexible, durable and UL classified—ideal for both indoor and outdoor sealing projects.

Key Features

• Precision straw dispenser for controlled application
• Low-pressure, minimal-expanding formula
• Tack-free in approximately 8 minutes
• Forms airtight, water-resistant seals
• Helps lower energy bills by preventing air and moisture infiltration
• UL Classified for safety and performance
• Durable flexibility adapts to movement and temperature changes