SprayFilm WB3 is a water based intumescent coating consisting of polyvinyl acetate resins and fillers for the fire protection of structural steel.

SprayFilm WB3 is preferably spray applied with airless paint equipment for speed and quality of finish. Brush and roller application is also possible.

SprayFilm WB3 is applied directly to the contour of primed I & H section columns and beams, and hollow sections, to provide fire protection for up to 120 minutes. In a fire, a chemical reaction takes place, causing the SprayFilm WB3 to expand and form an insulating layer which prevents the temperature of the steel rising to a critical level. SprayFilm WB3 can be sealed and protected with a decorative topcoat.

The advantages of using WB3 include-
· Up to 120 minutes fire resistance to AS/NZS
· Up to 3 hours fire resistance to ASTM
· Durable and decorative finish
· Steelwork may be left exposed to view
· Chemical and abuse resistant
· Can be top coated to match surroundings
· Easy application and clean up with water
· Fast drying time