Thermo-Bond waterproof finish seals in grouting around the tub so that fading, discoloration and moldy grout will not be a problem in the years to come. Thermo-Bond is 100% mold and mildew resistant. A bathtub or tile refinishing is done in one day. All work is done with no harm to surrounding areas; and there is no mess to clean up! Your new Thermo-Bond surface is ready to be used in 24 hours. Choose Thermo-Bond: Professional quality guarantee.