Foster® 30-80AF™ Vapor-Safe® Coating AF has the water resistance and low water vapor permeance normally found in only solvent-based products. It can be used in high humidity environments, and greatly retards water vapor permeation. It is non-flammable in the wet state.

Vapor-Safe Coating AF is formulated for both indoor and light duty commercial outdoor use. It is U.V. resistant. It has a mild latex “paint type” odor, and is designed for use on pipes, vessels, ducts, and equipment operating below ambient temperatures.

Vapor-Safe Coating AF is ideal for vapor sealing ASJ, FRK, and FSK jackets and board facings at joints, laps and over staple and weld pin punctures. It is an excellent duct board closure sealant. Do not exceed 1/8” (3.2mm) wet film thickness.