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Summary:A multi-layered roofing shingle is described. The layers of the shingle are connected via a mechanical fastener. A method for manufacturing a multi-layered shingle is also described. The method includes aligning the layers of the shingle, and connecting the layers via at least one mechanical fastener. Further described is a multi-layered shingle having layers that are mechanically fastened by deforming one of the layers into one of the other layers.
Bibliography:Application Number: US20090474041