Patent ID: 11946253
Assignee: TAMKO BUILDING PRODUCTS LLC
Field: Surface technology, coating (Chemistry)
Classification: CPC E  B | IPC B  E

Claim 16:
17. An impact resistant roofing shingle comprising:
an upper shingle layer having a tab portion and a headlap portion;
a lower shingle layer laminated to said upper shingle layer underneath said tab portion of said upper shingle layer;
the upper shingle layer and the lower shingle layer each comprise:
a mat;
an upper asphalt coating layer applied to an exposed side of the mat,
a lower asphalt coating layer applied to an unexposed side of the mat,
a granular coating applied to the upper asphalt coating layer opposite the mat, and
a fabric reinforcing layer applied to the lower asphalt coating layer opposite the mat;

wherein the upper shingle layer and the lower shingle layer are each a uniform thiickness, and
wherein each fabric reinforcing layer comprises a plurality of randomly arranged material strands that are fused together at a plurality of locations.