Shift nearly the following shingle row, offsetting the shingles horizontally by about six inches so that the tabs are staggered. Each a few-tab shingle involves four nails, one over each tab groove. The nails must be inserted 3 to four inches through the shingle’s bottom edge, plus the nails on https://roofing-contractor25926.onesmablog.com/roofer-secrets-66931534