How many roofing nails do you need to cover 16 squares?

To cover 16 squares of roofing, you typically need about 2 to 3 bundles of shingles per square, depending on the type of shingles used. Each bundle usually requires around 30 to 40 roofing nails. Therefore, for 16 squares, you would need approximately 960 to 1,920 roofing nails, assuming an average of 60 to 120 nails per bundle. Always check the manufacturer's specifications for exact requirements.