Move as many as the next shingle row, offsetting the shingles horizontally by about six inches so which the tabs are staggered. Every single a few-tab shingle needs 4 nails, one particular above Every single tab groove. The nails should be inserted 3 to four inches from the shingle’s bottom https://excellentopolis.com/roofing-hail-navigating-insurance-claims-for-a-hassle-free-experience/