800-374 Nomaco K-FLEX 374 Protective Coating - Gallon K-FLEX 374 Protective Coating is a water-based coating specially formulated for application to elastomeric insulation surfaces. Fast drying and white in color, this protective coating offers UV resistance and is ideal for indoor and outdoor applications. K-FLEX 374 Protective Coating is available in gallon containers. INDOOR APPLICATIONK-FLEX 374 Protective Coating offers a tough, cleanable surface for indoor applications. The decorative coating can be tinted with common pigment pastes used for tinting latex paint. Pigments should be added at the rate of less than 4.3 oz/gal. The coating is free of any solvent odors. OUTDOOR APPLICATIONSK-FLEX 374 Protective Coating offers protection from the harmful effects of UV rays when applied to insulation outdoors. It should not be confused as a waterproof mastic, and should not be used in areas where water ponding could occur.