Acoustiblok – The Science
Mass law and stiffness are the backbone of Acoustiblok. Mass law, the principle concept used in the evaluation of engineering solutions to combat sound transmission in buildings, has been used for decades by industry contractors. Unfortunately mass law is subject to the law of diminishing returns. The initial doubling of density yields the most improvement. Each successive doubling produces proportionally less STC improvement, resulting in an increase in cost per STC increase.
Stiffness, or rather an absence thereof, is a huge contributor to how well a barrier can attenuate sound/noise at specific frequencies. The less stiff the material, the more internal damping (energy loss from internal friction) it possesses. Acoustiblok employs the best of both.
At 1/8″ thick, and 1 pound per square foot, Acoustiblok is the right balance of mass and flexibility. Acoustical energy is efficiently converted to frictional energy and dissipated within the material. Given the fact that Acoustiblok is air tight, the sound has difficulty passing through the membrane. This minimizes the amount of acoustical energy that can pass through a construction assembly incorporating Acoustiblok.