Rosco Flamex PA Paint Additive is a clear, un-pigmented additive for creating a flame retardant paint layer. Add one full jar to a US gallon (3.79L) of water based paint to make your paint coating flame retardant. Compatible in most latex or vinyl acrylic paints but always test with your specific paint choice. Do not use with metallic paints. Does NOT alter the flammability of the substrate being painted but only adds a retardant treatment that slows the spread of fire along the surface.8 oz jar. Click here for MSDS