Top down trap lock two-ply shingle system for roofs

A building exterior roof system for protecting the roof from rain and other deleterious weather elements, said roof system being comprised of a plurality of individual shingles interlocked and fastened to the exterior roof surface, each of said individual shingles comprising:

• a bottom layer of a pre-determined length measured from the bottom edge to the top edge;
• a top layer attached to the upper edge of said bottom layer permanently and having an upper edge area sized in length to fit in a pocket formed between said top layer and said bottom layer wherein shingles in different rows can be interlocked together with the upper layer of a lower row shingle being interlocked in said pocket formed between the middle and bottom layer of an upper row shingle;
• and
• wherein said top layer and said bottom layer are hinged together defining a hinge joint comprising flexible webbing bonded to a bottom portion of said top layer and bonded to a top portion of said bottom layer.

A roofing shingle system that is fastened to a roof for protecting the roof from water intrusion comprising:

• an array of individual shingles each shingle having a top layer and a bottom layer, said bottom layer extending below said top layer providing a fastening area, wherein said top layer and said bottom layer are hinged together defining a hinge joint comprising flexible webbing bonded to a bottom portion of said top layer and bonded to a top portion of said bottom layer, and said shingles laid in rows and interlocked in a top down fashion from row to row comprising:
• a roof;
• a first row of shingles fastened to said roof within said fastening area along the lower edge of said shingles;
• a lower row of shingles each of which is interlocked along its upper edge with the above row of shingles between at least two layers on said upper shingle and fastened along its lower edge in said fastener area so that subsequent rows from top down are all interlocked together and the fasteners covered by the lower rows of shingles.