Metal roofing shingle, metal roofing shingle system, and method of installing

A metal roof shingle manufactured from a metal shingle blank, said shingle blank comprising:

• a) a planar segment defined by a top surface and a bottom surface;
• b) a first transverse edge segment opposite a second transverse edge segment;
• and
• c) a first longitudinal edge segment opposite a second longitudinal edge segment;
• whereby the second transverse edge segment is folded to form a double-flanged compression joint that extends beneath the bottom surface of said planar segment, said double-flanged compression joint including a compression flange that extends outward from beneath said bottom surface at an upward angle to said planar segment;
• and
• whereby the second longitudinal edge segment is folded to form a double-flanged interlock joint having a first flange that extends beneath the bottom surface of said planar segment, said double-flanged interlock joint overlapped by said folded second transverse edge segment, and said double-flanged interlock joint including a nailing hem that extends outward from beneath said bottom surface in parallel with said first flange for attachment to a roof;
• said second transverse edge segment and said second longitudinal edge segment folded to manufacture the metal roof shingle.

A metal roof shingle comprising:

• a) a planar segment defined by a top surface and a bottom surface;
• b) a first transverse edge segment;
• c) a second transverse opposite said first transverse edge segment, said second transverse edge Segment folded to form a double-flanged compression joint that extends beneath the bottom surface of said planar segment, said double-flanged compression joint including a compression flange that extends outward from beneath said bottom surface at an upward angle to said planar segment;
• d) a first longitudinal edge segment;
• and
• e) a second longitudinal edge segment opposite said first longitudinal edge segment, the second longitudinal edge segment folded to form a double-flanged interlock joint having a first flange that extends beneath the bottom surface of said planar segment, said double-flanged interlock joint overlapped by said folded second transverse edge segment, and said double-flanged interlock joint including a nailing hem that extends outward from beneath said bottom surface in parallel with said first flange for attachment to a roof

A method of installing a metal roofing shingle system, comprising:

• a) providing universal flashing including a first leg with an integral double-flanged interlock joint extending along a length thereof, and a second leg fixed to said first leg and including an integral double-flanged interlock joint extending along a length thereof, each said double-flanged interlock joint adapted to couple with metal shingles, each said double-flanged interlock joint including an outward extending nailing hem for attachment to a roof, and b) providing metal roof shingles comprising:
• i) a planar segment defined by a top surface and a bottom surface,
• ii) a first transverse edge segment opposite a second transverse edge segment, the second transverse edge segment folded to provide a double-flanged compression joint that extends beneath the bottom surface of said planar segment, said double-flanged compression joint including a compression flange that extends outward from beneath said bottom surface at an upward angle to said planar segment, and
• iii) a first longitudinal edge segment opposite a second longitudinal edge segment, the second longitudinal edge segment folded to provide a double-flanged interlock joint having a first flange that extends beneath the bottom surface of said planar segment, said double-flanged interlock joint including a nailing hem that extends outward from beneath said bottom surface in parallel with said first flange for attachment to a roof, said folded second longitudinal edge segment being overlapped by said folded transverse edge segment;
• c) attaching said universal flashing as a ridge cap by driving fasteners through said nailing hems extending along the first leg and along the second leg of said universal flashing and into the roof;
• d) installing a first course of metal roof shingles, each shingle having its first longitudinal edge segment inserted between the flanges of one of said interlock joints provided in said universal flashing attached as a ridge cap, each shingle, with the exception of a first shingle in said first course, having its first transverse edge segment inserted between the flanges of the double-flanged compression joint of an adjacent shingle, the compression flange forcibly engaging the bottom surface of said first longitudinal edge segment, each conjoined shingle fixed to the roof by driving fasteners through said nailing hem;
• e) installing a second course through a last course of metal roof shingles, each shingle having the first longitudinal edge segment inserted between the flanges of the double-flanged interlock joint provided along the folded second longitudinal edge segment of an adjacent shingle, and each shingle, with the exception of a first shingle in each second through a last course of shingles, having its first transverse edge segment inserted between the flanges of the double-flanged compression joint of an adjacent shingle, said compression flange forcibly engaging the bottom surface of said conjoined first longitudinal edge segment, each shingle in said second through a last course of shingles fixed to the roof by driving fasteners through said nailing hem.