Big gaps call for big seals. GREAT STUFF™ Big Gap Filler Insulating Foam Sealant fills, seals and insulates larger gaps, providing a water-resistant barrier to help minimize unwanted airflow and improve energy efficiency in high-loss areas.

• Expands to fill, seal, and insulate gaps up to 3” (76mm).
• Forms a long-lasting, airtight, weather-resistant seal