Abstract: A roofing system includes a roofing substrate, a starter course of starter roofing shingles adhered to the roofing substrate, and a first course of roofing shingles vertically adjacent to the starter course. At least one starter roofing shingle of the starter course includes a first sealant line disposed on the front surface of the at least one starter roofing shingle that extends substantially across the length of the front surface of the at least one starter roofing shingle, and a second sealant line disposed on the back surface of the at least one starter roofing shingle that extends substantially across the length of the back surface of the at least one starter roofing shingle. The first sealant line is positioned opposite to the second sealant line at substantially the same distance along the width of the at least one starter roofing shingle.

Abstract: A roofing system includes a roofing substrate, a starter course of starter roofing shingles adhered to the roofing substrate, and a first course of roofing shingles vertically adjacent to the starter course. At least one starter roofing shingle of the starter course includes a first sealant line disposed on the front surface of the at least one starter roofing shingle that extends substantially across the length of the front surface of the at least one starter roofing shingle, and a second sealant line disposed on the back surface of the at least one starter roofing shingle that extends substantially across the length of the back surface of the at least one starter roofing shingle. The first sealant line is positioned opposite to the second sealant line at substantially the same distance along the width of the at least one starter roofing shingle.

Abstract: A roofing system includes a roofing substrate, a starter course of starter roofing shingles adhered to the roofing substrate, and a first course of roofing shingles vertically adjacent to the starter course. At least one starter roofing shingle of the starter course includes a first sealant line disposed on the front surface of the at least one starter roofing shingle that extends substantially across the length of the front surface of the at least one starter roofing shingle, and a second sealant line disposed on the back surface of the at least one starter roofing shingle that extends substantially across the length of the back surface of the at least one starter roofing shingle. The first sealant line is positioned opposite to the second sealant line at substantially the same distance along the width of the at least one starter roofing shingle.

Abstract: A bundle of roofing shingles includes at least a first, second, third, and fourth shingle layer, where the first layer includes a first roofing shingle having a first length; the second layer includes a second roofing shingle having a second length and a third roofing shingle having a third length, where the second length is less than the third length, where a sum of the second and third lengths is substantially equal to the first length; the third layer includes a fourth roofing shingle having a fourth length and a fifth roofing shingle having a fifth length, where the fourth length is less than the fifth length, where a sum of the fourth and the fifth lengths is substantially equal to the first length; the fourth layer includes a sixth roofing shingle having a sixth length and a seventh roofing shingle having a seventh length, where the sixth length is less than the seventh length, where a sum of the sixth and seventh lengths is substantially equal to the first length; where each of the first, second, third

Abstract: A bundle of roofing shingles includes at least a first, second, third, and fourth shingle layer, where the first layer includes a first roofing shingle having a first length; the second layer includes a second roofing shingle having a second length and a third roofing shingle having a third length, where the second length is less than the third length, where a sum of the second and third lengths is substantially equal to the first length; the third layer includes a fourth roofing shingle having a fourth length and a fifth roofing shingle having a fifth length, where the fourth length is less than the fifth length, where a sum of the fourth and the fifth lengths is substantially equal to the first length; the fourth layer includes a sixth roofing shingle having a sixth length and a seventh roofing shingle having a seventh length, where the sixth length is less than the seventh length, where a sum of the sixth and seventh lengths is substantially equal to the first length; where each of the first, second, third