# US 2014/0193604 A1 · Roofing shingle with enhanced shadowline appearance > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0193604 A1 - Document ID: US20140193604A1 - Status: Published application - Kind: A1 - Application number: 14/136,542 - Filed: 2013-12-20 - Published: 2014-07-10 - Earliest claimed: 2013-01-04 - Assignees: CertainTeed Corporation - Applicants: CertainTeed Corporation - Inventors: Robert L. JENKINS; Gregory F. JACOBS - Web page: https://patentgrep.com/patent/US20140193604A1 ## CPC - E04D 1/26: Strip-shaped roofing elements {simulating a repetitive pattern, e.g.} appearing as a row of shingles - E04D 1/12: Roofing elements shaped as plain tiles or shingles, i.e. with flat outer surface (E04D1/28, E04D1/30 take precedence) - E04D 1/22: of specified materials {not covered by any one of groups E04D1/14 - E04D1/205}, or of combinations of materials, {where at least one is} not covered by any one of groups E04D1/14 - E04D1/205 - E04D: ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS (coverings of outer walls by plaster or other porous material E04F13/00) ## Abstract A roofing shingle may include a shingle body having a buttlap portion with a butt edge and a headlap portion. An exposure zone may extend from the butt edge toward the headlap portion and may be configured to be exposed to the environment when the roofing shingle is installed on a roof. The butt edge may be variegated and may include at least one tab. A first shadowline may be on at least a portion of the at least one tab. A second shadowline may be in the exposure zone. The first and second shadowlines may differ from each other in at least one aspect. ## Claims ### Claim 1 A roofing shingle, comprising: a shingle body having a buttlap portion with a butt edge, a headlap portion, an exposure zone extending from the butt edge toward the headlap portion that is configured to be exposed to the environment when the roofing shingle is installed on a roof; wherein the butt edge is variegated and includes at least one tab; a first shadowline on at least a portion of the at least one tab; a second shadowline in the exposure zone; and the first and second shadowlines differ from each other in at least one aspect. ### Claim 2 (depends on 1) The roofing shingle of claim 1, wherein the at least one aspect is color variation. ### Claim 3 (depends on 1) The roofing shingle of claim 1, wherein the first and second shadowlines differ from each other in color by at least about 2 L* CIE color units and not greater than about 50 L*CIE color units. ### Claim at position 4 4-5. (canceled) ### Claim 6 (depends on 1) The roofing shingle of claim 1, wherein the second shadowline comprises a plurality of second shadowlines in the exposure zone, each of which varies in at least one aspect with respect to the other second shadowlines. ### Claim at position 6 7-8. (canceled) ### Claim 9 (depends on 1) The roofing shingle of claim 1, wherein the variegated butt edge is discontinuous and is not dragon toothed. ### Claim 10 (depends on 1) The roofing shingle of claim 1, wherein the variegated butt edge has a width that is less than a width of the exposure zone, and the variegated butt edge does not extend to a fastening zone in the headlap portion. ### Claim 11 (depends on 1) The roofing shingle of claim 1, wherein the variegated butt edge varies in width by at least about 2%, and not greater than about 25%. ### Claim at position 10 12-16. (canceled) ### Claim 17 (depends on 1) The roofing shingle of claim 1, wherein the at least one tab comprises a plurality of tabs with varying widths that are configured to at least partially cover the second shadowline of a previous course of roofing shingle by different amounts. ### Claim at position 12 18-19. (canceled) ### Claim 20 (depends on 1) The roofing shingle of claim 1, wherein at least a portion of at least one shadowline is interrupted at the variegated butt edge of an adjacent course of roofing shingle. ### Claim at position 14 21-23. (canceled) ### Claim 24 (depends on 1) The roofing shingle of claim 1, wherein one or more of the shadowlines is continuous and oscillates or varies in width in a length direction for at least one roof shingle in a course of more than one roofing shingle. ### Claim 25 (canceled) ### Claim 26 (depends on 1) The roofing shingle of claim 1, wherein more than one shadowline varies in color and goes from darker to lighter, or lighter to darker, in a width direction. ### Claim 27 (depends on 1) The roofing shingle of claim 1, wherein the exposure zone comprises a primary shingle color that is of a blend of two or more different colored blend drops or tones, with or without a mix or a single granule color tone or two or more mixed individual granule colors; and the second shadowline is located at an upper end of the exposure zone adjacent the primary shingle color. ### Claim 28 An array of roofing shingles having a first course underlying a second course on a roof, each roofing shingle comprising: a shingle body having a buttlap portion with a butt edge, a headlap portion, an exposure zone extending from the butt edge toward the headlap portion that is exposed to the environment; wherein the butt edge is variegated and includes at least one tab; a first shadowline on at least a portion of the at least one tab; a second shadowline in the exposure zone; the first and second shadowlines differ from each other in color; and the second shadowline of the first course at least partially underlies the at least one tab of the second course, such that the second shadowline is at least partially exposed even when at least partially covered by the at least one tab of the second course. ### Claim 29 (depends on 28) The array of claim 28, wherein the first and second shadowlines differ from each other by at least about 2 L* CIE color units and not greater than about 50 L*CIE color units. ### Claim 30 (depends on 28) The array of claim 28, wherein the first shadowline comprises a plurality of first shadowlines on the at least one tab, each of which varies in color with respect to the other first shadowlines. ### Claim 31 (depends on 28) The array of claim 28, wherein the second shadowline comprises a plurality of second shadowlines in the exposure zone, each of which varies in color with respect to the other second shadowlines. ### Claim at position 23 32-35. (canceled) ### Claim 36 (depends on 28) The array of claim 28, wherein the variegated butt edge varies in width by at least about 2% and not greater than about 25%. ### Claim at position 25 37-38. (canceled) ### Claim 39 (depends on 28) The array of claim 28, wherein the shingle body is formed from a material that is bituminous, thermoplastic, thermoset polymer, metallic, recycled material or a combination thereof. ### Claim at position 27 40-41. (canceled) ### Claim 42 (depends on 28) The array of claim 28, wherein the at least one tab comprises a plurality of tabs with varying widths that at least partially cover the second shadowlines of the first course by different amounts. ### Claim at position 29 43-49. (canceled) ### Claim 50 (depends on 28) The array of claim 28, wherein a same shadowline tone or color is repeated with either a darker or lighter color tone as a separation therebetween in a length direction. ### Claim 51 (depends on 28) The array of claim 28, wherein more than one shadowline varies in color and goes from darker to lighter, or lighter to darker, in a width direction. ### Claim 52 (canceled) ### Claim 53 (depends on 1) The roofing shingle of claim 1, wherein the second shadowline is located in the headlap portion. ### Claim at position 34 54-56. (canceled) ### Claim 57 (depends on 28) The array of claim 28, wherein at least one of the roofing shingles of the second course has a cut out, and the second shadowline on the first course is visible through the cut out.