Patent ID: 8210310
Filing Date: 2012-07-03
Classification: B32B,C04B,E04B,E04F,Y02W,Y10T

Abstract:
1. A method of installing an acoustical finishing system to a substrate that provides a desired sound attenuation to an occupied space, said method comprising: attaching an acoustical panel to a substrate of the occupied space, said panel having a first density, a first porosity and a first void volume; selecting components for a first finishing layer comprising a first plurality of non-close packing first particles, a first binder, a first rheological modifier and a first portion of water; combining the components for the first finishing layer to make the first finishing layer; applying the first finishing layer to the substrate; allowing the first finishing layer to dry, wherein following said allowing step the density of the dried first finishing layer is the first density, the porosity of the dried first finishing layer is the first porosity and the void volume of the dried first finishing layer is the first void volume, and wherein the combination of the acoustical panel and the dried first finishing layer produces the first desired sound attenuation in the occupied space; changing the first desired sound attenuation to a second desired sound attenuation; selecting components for a second finishing layer comprising a second plurality of non-close packing second particles, a second binder, a second rheological modifier and a second portion of water; combining the components for the second finishing layer to make the second finishing layer; applying the second finishing layer to the first finishing layer; and allowing the second finishing layer to dry, wherein following said second finishing step, the dried second finishing layer has a second density, a second void volume and a second porosity and wherein the combination of the substrate, the first finishing layer and the second finishing layer produces the second desired sound attenuation in the occupied space; and wherein if the second desired sound attenuation is greater than the first desired sound attenuation, the second density is less than or equal to the first density and if the second desired sound attenuation is less than the first desired sound attenuation, the second density is greater than the first density.