WINDOW&DOOR FOAM SEAL 20OZ

GREAT STUFF PRO Window & Door Foam Sealant (20 oz) is a professional-grade, low-pressure polyurethane foam designed specifically to seal the gap between window or door frames and their rough openings. Engineered for controlled expansion, it helps prevent frame distortion or bowing while still creating a tight, durable air and moisture barrier. This makes it especially useful for installations where precision and structural stability are critical.

Once applied, the foam expands to conform to irregular cavities, forming a long-lasting seal that helps reduce drafts, improve energy efficiency, and limit air and water infiltration. It bonds well to common building materials such as wood, metal, masonry, glass, and most plastics, making it versatile for both new construction and retrofit projects.

The formulation is designed for professional use with a foam dispensing gun, allowing for more controlled application compared to straw-grade foams. It becomes tack-free in minutes, can be trimmed after curing, and is paintable once fully set, which helps achieve a clean, finished appearance around installed windows and doors.

Overall, this product is commonly used by contractors and experienced DIYers for improving insulation, sealing air leaks, and enhancing the energy performance of residential and commercial buildings-especially around fenestration openings where controlled expansion and reliability matter most.