When you find a gap or crack that's a real monster, GREAT STUFF big gap filler is the stuff. GREAT STUFF big gap filler insulating foam sealant is a ready-to-use, expanding polyurethane insulating foam sealant that fills, seals and insulates gaps up to 3".

Forms a long-lasting, weather-tight seal to reduce drafts for greater comfort and lower energy bills
Adheres to wood, drywall, metal, masonry, glass and most plastics
Has elasticity that allows for movement and shifting within a structure Interior or exterior use
All direction dispensing
Tack-free in 5 to 15 min
Rigid after it cures and can be trimmed in 60 min
Paintable, stainable and sandable
Cream-colored, so you can see it