Foam & Fill® Large Gaps & Cracks

This 8 oz. expanding polyurethane sealant fills large gaps and cracks, forming an airtight, waterproof bond. It is suitable for interior and exterior use on various surfaces and prevents drafts and pests.

• The description claims that the sealant is fish and plant safe.
• The description claims that the cured foam can be sanded, painted, or stained.
• The description claims that the sealant adheres to painted and unpainted wood, concrete, cinder block, aluminum, masonry, and fiberglass.