Loctite TITE FOAM Big Gaps is a new generation of polyurethane-based insulating foam sealant that expands to fill, seal, and effectively insulate gaps and cracks up to 3 in. in size, inside and out! Loctite TITE FOAM Big Gaps is a bright white color and offers premium durability with its high density, flexibility, strong adhesion and UV resistance. Use to seal out air, moisture and pests in basements or crawlspaces, attic hatches and plumbing.