Patent ID: 8211528
Filing Date: 2012-07-03
Classification: D06N,E04D,Y02A,Y02B,Y10T

Abstract:
1. An asphalt-based roofing material comprising: a mat saturated and coated with an asphalt-based coating, the coating including a top portion covering the top of the mat, a mat portion saturating the mat, and a bottom portion covering the bottom of the mat; wherein the top portion of the coating comprises a mixture of asphalt and a filler, the filler comprising rock particles selected from the group consisting of igneous rock particles, metamorphic rock particles, and mixtures thereof; and wherein the mat portion of the coating comprises a mixture of asphalt and filler, the filler containing no more than about 10% rock particles selected from the group consisting of igneous rock particles, metamorphic rock particles, and mixtures thereof, by weight of the filler.