Patent ID: 8240101

Claim:
A method for installing at least a first course of laminated roofing shingles and a second course of laminated roofing shingles on a roof deck, wherein the shingles include a top sheet and a backer strip; the method comprising: (a) driving a fastener through a headlap portion of the top sheet of the first course of laminated roofing shingles above a common bond portion of the shingles and into the roof deck, wherein the fastener comprises: (i) a shank element having a length dimension and a point, said shank element being adapted to enable it to be driven through at least the first course of roofing shingles and into the roof deck; (ii) a fastener head positioned in a region of the shank element distal from said point; and (iii) a spike protrusion projecting from said region of the shank element to a terminus; said spike protrusion having a length less than one half the length of the shank, measured from the point to the fastener head; wherein the spike protrusion is adapted to penetrate a depth less than the full depth of the second course of laminated roofing shingles installed above said first course; and wherein the spike protrusion is shaped to inhibit sawing through said second course of roofing shingles by said spike protrusion; and (b) installing the second course of laminated roofing shingles above the first course, wherein the spike protrusion of the fastener penetrates into the backer strip of the second course to a depth less than the full depth of the backer strip.