Acoustic Sealant is the “necessary” to stopping leakage in wall systems. It is essential for achieving high STC value for sound control. Leaving either a 1/4” or 3/8” bead at the drywall joints will increase the overall wall system performance by 12%. 29oz. tube – 1/4" bead: 86 lin.ft. per tube – 3.8” bead: 38 lin. Ft. per tube