Sheet metal shingle

DETAILED DESCRIPTION The present invention is directed to a sheet metal shingle for application on a roof beginning at a ridge and proceeding downwardly, and which has resilient sealing material for sealing against adjacent shingles wound the entire perimeter of the shingle.
The shingle has a male portion along one edge thereof which will be the upper edge when installed on a roof, and has a female portion adjacent the opposite edge.
A bead of resiliently compressible material such as nitrogen foamed urethane or nitrogen foamed silicon is adhered to the male edge of the shingle for sealing against the inside of the female portion on the adjacent shingle.
The shingle has a nailing flange below the female portion of the shingle.
The shingle further has an inwardly turned hook along one end (vertical edge when installed) and an outwardly turned hook along the other end for interengagement or interlocking of vertical edges of adjacent shingles.
A non-hardening sealant material such as butyl caulking compound is disposed in one or both of the turned flanges to provide a seal between the vertical edges of adjacent shingles.
Shingles of this invention ware adapted to effectively resist water penetration when installed on roofs having relatively low slopes.
The water seal provided by this invention is superior to the prior art shingles.
Other objects and advantages of this invention will be more fully understood and appreciated with reference to the following description and the drawings.