Patent ID: 8512814

Claim:
A method for sound-proofing a surface, the method comprising the steps of: providing an interior surface to be coated; applying a base coat material to the surface to a thickness in the range of from 25 to 30 mil, the base coat material having a formula: 20 to 50 percent by weight of a rubber emulsion; 10 to 20 percent by weight of a carbonate filler; 3 to 10 percent by weight of a fire retardant; 3 to 10 percent by weight of a opacity filler; and 10 to 64 percent by weight of other components for affecting characteristics of the base coat material; applying a top or finish coat material to the surface over the base coat material to a thickness in the range of from 7 to 10 mil, the top or finish coat material having a formula: 40 to 80 percent by weight of a rubber emulsion; 10 to 20 percent by weight of a carbonate filler; 3 to 10 percent by weight of a fire retardant; 3 to 10 percent by weight of a opacity filler; and 0 to 44 percent by weight of other components for affecting characteristics of the top coat material; and, obtaining a sound transmission class rating of the coated interior surface.