A high-performance sound damping compound for use between layers of drywall or other building materials. * Apply at a rate of 2 tubes per 4x8 sheet of drywall. * QuietGlue Pro is less expensive than competing products, and at this point performance between QuietGlue Pro and competitor products is too close to declare a winner. * Easy to use * Lab tested in accordance with ASTM D3273 and E90