What is the strongest expanding foam?
Best Expanding Foam Best Overall: Loctite TITE FOAM Insulating Foam Sealant. Best Kit for Large Projects: Great Stuff Pro Gaps and Cracks. Best Kit for Pests: Great Stuff Pro Kit. Best for Crafts: Smooth-On Foam-iT! ... Best Fire Block: Fire Block Polyurethane Foam Sealant. Best Value: Big Gap Filler. More items... Mar 14, 2022