GAF Liquid Membrane & Coating TOPCOAT® MB Plus

Description TOPCOAT® MB Plus is a water-based, low VOC, acrylic, sprayable polymeric liquid, which cures to form a seamless rubber membrane. Covers and protects most roof surfaces including modified bitumen (smooth and granulated), smooth BUR, and metal. MB Plus is an ENERGY STAR® qualified reflective product that will help to reduce building temperatures. MB Plus is listed by the Cool Roof Rating CouncilSM for solar reflectance and thermal emittance. It is highly reflective, flexible and, due to unique emulsion chemistry, resists unsightly bleed-through over asphalt substrates better than solvent-based systems. Available in white (for maximum reflectivity) and custom colors. It is non- flammable, presents minimal hazard to the applicator or the environment, and cleans up with water. Uses MB Plus is designed to protect and restore aged roofs. This product can be used on modified bitumen, BUR, Hypalon®, metal as a primer, wood, and concrete. For use with water-based sealants and top coats only. Substrate shall not pond water for a period longer than 48 hours. Surface must be free of ponding water, ice, snow, and debris prior to application. Do not apply at temperatures below 42°F. Substrate temperatures must be below 120°F when applying product.