8 Oz. Jar of Flamex PA Paint Additive


Rosco Laboratories' Flamex PA is a clear, un-pigmented additive for creating a flame retardant paint layer.  Add one full jar of Flamex PA to a US gallon (3.79 liters metric) of water-based paint to make your paint coating flame retardant.  Flamex PA is compatible in most latex or vinyl acrylic paints but always test with your specific paint choice.  Do NOT use Flamex PA with metallic paints as the metal pigments may react and tarnish or corrode.  Flamex PA 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.

Rosco Flamex PA has been pre-measured and should be added to a single US Gallon (3.79L) of paint.  Once combined, the paint/Flamex mixture can be diluted as desired but the dry paint film must be no less than 4 mil in thickness.  The effectiveness of a fire retardant barrier is dependent on both the fire retardant additive and the thickness of the coating.  Flamex PA is not intended to be used in place of other Flamex products.  Where possible, always treat the substrate material using the appropriate Flamex product.

NOTE: When using Flamex PA in Rosco Supersaturated paint, add one 8 oz. jar to one quart of undiluted Supersaturated and then dilute this mixture at least 1:1 with water.  Mix thoroughly before using.

  • 8 oz. of Flamex PA mixed into one gallon of paint will treat approximately 300 square feet (28 square meters) of material as per paint manufacturer's guidelines.
  • Apply treated paint by brush, roller or sprayer asper the paint manufacturer's instructions. Regardless of the method of application, it is vital that a complete paint film is formed and that the dry film thickness of the finished coating is not less than 4 mil. Paint filmsthat are incomplete, or are too thin, will not provide a barrier against the spread of fire.
  • Flamex PA has been approved for use by the California and New York City Fire Marshall and has been tested according to ASTM E84Class A.
  • Store Flamex products in non-metallic containers. When metal sprayers areused, they should be thoroughly cleaned immediately after use, includingnozzles and accessories. Avoid use of metal buckets or paint containers when possible.

Disclaimer: Read carefully the instructions supplied with any Flamex product. Rosco offers these products in good faith, but without guarantee of any type, since materials treated and methods of application are beyond the control of the manufacturer. You should determine suitability of the Flamex product for the intended use and always test before using

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