Henry? 900 flashing and construction sealant - gray is a single component, moisture-curing compound formulated for use as a general-purpose construction sealant. When fully cured, Henry? 900 flashing and construction sealant - gray forms a tough, durable bond. Henry? 900 flashing and construction sealant - gray aggressively adheres to most common building materials and is paintable when fully cured.
