How many nails per roll of 30 pound felt?

A standard roll of 30-pound felt typically requires about 3 to 4 nails per square foot for proper installation, depending on the specific application and local building codes. Since a roll usually covers around 400 square feet, you would need approximately 1,200 to 1,600 nails for the entire roll. Always check manufacturer guidelines and local regulations for the most accurate requirements.