Reflective insulating fire-retardant coating for waterproof roll, and preparation method and use thereof

The invention relates to a reflective insulating fire-retardant coating for a waterproof roll, and a preparation method and use thereof. The coating comprises the following material formulas by weight percent of 20-25% of styrene-ethylene-butene-styrene butadiene styrene block copolymer, 8-15% of terpene resin, 5-10% of acrylic resin, 10-15% of n-butyl acetate, 10-15% of titanium dioxide, 1-8% of hollow microsphere, 5-8% of halogen-free flame retardant phosphate, 5-10% of antimonous oxide, 5-15% of talcum powder, 0.5-1% of antioxidant, 0.3-0.8% of defoamer, and 20-35% of 200# solvent oil, wherein the sum of weight percents of all materials is 100%. The coating disclosed by the invention can be directly matched with the waterproof roll, has an excellent insulating fire-retardant property, and can be used for effectively improving the fire security and the thermal insulating property of the rolled roofing material.