Abstract: A composition for protecting an exposed surface from the formation and growth of mildew and from other environmental soiling and from defacement by graffiti marking is provided in the form of an aqueous latex rubber solution which may also contain a bleaching agent. The composition is applied to the surface to be protected as an aqueous solution which, following application, dries and cures to form a transparent protective barrier. The barrier can be removed when desired simply by washing with soap and water.