Abstract: The present disclosure provides a method for producing detectable warnings (16) on substrate surfaces (14), which includes providing a mat (30) with a top surface (38) and a bottom surface (36) and a pattern of mat through holes (34) extending through the mat (30). The through holes (34) comprise a lower portion (44) defining a lower mat opening (33) and an upper portion (32) defining an upper mat opening (35), wherein the upper mat opening (35) is larger in transverse dimension than the lower mat opening (33). The method further includes placing the mat (30) on a substrate surface (14), wherein the bottom surface (36) of the mat (30) is adjacent the substrate surface (14), and injecting into the mat through holes (34) a viscous substance (40) having the ability to cure into a solid. The method further includes removing the mat (30) at the appropriate time to form raised detectable warnings (16) on the substrate surface (14).

Abstract: The present disclosure provides a method for producing detectable warnings (16) on substrate surfaces (14), which includes providing a mat (30) with a top surface (38) and a bottom surface (36) and a pattern of mat through holes (34) extending through the mat (30). The through holes (34) comprise a lower portion (44) defining a lower mat opening (33) and an upper portion (32) defining an upper mat opening (35), wherein the upper mat opening (35) is larger in transverse dimension than the lower mat opening (33). The method further includes placing the mat (30) on a substrate surface (14), wherein the bottom surface (36) of the mat (30) is adjacent the substrate surface (14), and injecting into the mat through holes (34) a viscous substance (40) having the ability to cure into a solid. The method further includes removing the mat (30) at the appropriate time to form raised detectable warnings (16) on the substrate surface (14).

Abstract: The present invention is characterized as methods for fixedly depositing solidified protrusions on to a surface, and products thereof so as to create a detectible warning whereby the tactile and visual characteristics of the detectible warnings contrast with the tactile and visual characteristics of surrounding surfaces. To create such a detectible warning, a mask in the form of a resilient mat perforated with a plurality of apertures so as to form a repeating pattern. Each aperture acts as a mold of a protrusion having predetermined dimensions. To enhance the functionality of the protrusions, each protrusion has a generally inclined peripheral surface and rounded peripheral surface to substrate and peripheral surface to upper surface interfaces. The mat is placed in contact with the substrate on which a detectible warning is desired. A blend is created from a curable viscous substance and one or more of the following: reinforcing elements, reflective elements, pigments, or abrasives.