Patent ID: 11959281
Assignee: BMIC LLC
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 24:
25. A roofing system, comprising:
a roof deck; and
a roofing shingle installed above the roof deck,
wherein the roofing shingle comprises:
a first shingle layer;
a second shingle layer,
wherein the first shingle layer and the second shingle layer overlap to form a common bond area;

an attachment between the first shingle layer and the second shingle layer,
wherein the attachment is in the common bond area,
wherein the attachment comprises a indentation in the first shingle layer,
wherein the indentation comprises a round bar shape,
wherein a depth of the indentation is at most 90% of a thickness of the common bond area,
wherein a radius of the indentation is about 1/16 inch,
wherein a width of the indentation is about ¼ inch.