When asphalt shingles are installed on a roof with 5/8 inch sheathing, how far should the nails penetrate?

When installing asphalt shingles on a roof, it's essential for the nails to penetrate adequately to ensure a strong, weather-resistant attachment. For 5/8 inch sheathing, the goal is for the nails to completely go through the sheathing and into the underlying structure, which is typically the roof trusses or rafters. This ensures that the shingles are securely fastened and can withstand various weather conditions, such as wind and rain.

Complete penetration helps prevent lifting or movement of the shingles that could lead to leaks or shingle failure over time. It also guarantees that the fasteners engage with the solid structure below, providing optimal stability. Thus, ensuring that the nails go all the way through the sheathing is a crucial aspect of proper roofing installation.