Move up to another shingle row, offsetting the shingles horizontally by about six inches so the tabs are staggered. Each three-tab shingle necessitates four nails, one higher than Every tab groove. The nails ought to be inserted three to four inches in the shingle’s base edge, along with the nails https://cesarkrkym.uzblog.net/little-known-facts-about-roofer-40959538