Gaps & Cracks (Fireblock)
Great Stuff Pro™ Gaps & Cracks
GREAT STUFF PRO™ Gaps & Cracks closed-cell, insulating foam sealant is the first foam sealant recognized as a fireblock. It fills and seals gaps up to 3" and expands to take the shape of cracks and voids forming an airtight and water resistant bond to wood, metal, masonry, glass and most plastics. Gaps & Cracks is paintable and sandable, one 24oz can is equivalent up to 22 quart tubes of caulk and yields up to 970 linear feet.