MATERIAL: 29 oz. tube S.T.O.P. Noise Acoustical Sealant. COVERAGE: 1/4″ Bead 89 Linear ft. per Tube, 3/8″ Bead 40 Linear ft. per Tube. FEATURES: Essential for achieving high STC value for sound isolation APPLICATIONS: Wall/floor junctions to seal cracks and voids per laboratory test data, heating and A/C ducts, cold air returns, exposed joints, electrical and utility outlet boxes. COLOR: White FLAMMABILITY: ASTM E-84 – 76, Class A
Chart shows reduction in STC sound isolation of wall assembly due to sound leakage as a percentage of total wall surface.