Loctite TITEFOAM Big Gaps is a new generation of polyurethane-based insulating foam sealant. It expands to fill, seal, and effectively insulate gaps and cracks up to 3 inches in size, inside and out! Loctite TITEFOAM 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, HVAC or electrical penetrations. Quick and convenient to use and apply TITEFOAM Big Gaps offers an easy insulating spray foam option. It is recommended for use in both interior and exterior environments and is sandable and paintable.