Move as many as the subsequent shingle row, offsetting the shingles horizontally by about 6 inches so that the tabs are staggered. Each individual three-tab shingle requires 4 nails, one particular over each tab groove. The nails need to be inserted three to four inches from your shingle’s bottom edge, https://brookszofwk.ziblogs.com/26862583/roofing-no-further-a-mystery