Armacell - Armaflex WB Finish is a white water-based latex enamel supplied in gallon or quart containers for use over all forms of Armaflex Insulations. It provides a protective finish suitable to both indoor and outdoor applications. It is now formulated for greater durability and cold weather flexibility to resist cracking. Armaflex WB Finish is provided in handy plastic tubs, and brushes or rolls on easily. The water-based formulation makes it fast-drying without solvent fumes. Clean up with soap and warm water.