North Carolina Building Contractor License Practice Exam

Which type of nails is acceptable for fastening asphalt shingles?

1. Plastic roofing nails

2. Wooden roofing nails

3. Galvanized, stainless steel, aluminum, or copper roofing nails

4. Brass roofing nails

The correct answer is: Galvanized, stainless steel, aluminum, or copper roofing nails

Fastening asphalt shingles properly is crucial for ensuring their durability and effectiveness as a roofing system. The correct choice of roofing nails plays a significant role in this process. Galvanized, stainless steel, aluminum, or copper roofing nails are specifically designed to withstand various environmental conditions, including moisture, which can cause corrosion. The use of these materials helps to prevent rust and deterioration over time, ensuring that the shingles remain securely attached to the roof. Each of these materials has unique properties: galvanized nails are treated to resist rust; stainless steel offers high corrosion resistance; aluminum is lightweight and resistant to rust; and copper, known for its longevity, also provides anti-corrosive properties. In contrast, nails made from plastic, wood, or brass do not provide the same level of protection. Plastic roofing nails may not offer sufficient holding power and can become brittle in extreme temperatures. Wooden roofing nails lack the durability required for long-term stability and are susceptible to rot and insect damage. Brass nails, while they do have some resistance to corrosion, do not have the structural integrity or compatibility with asphalt shingles compared to the recommended metals. Using the correct type of nail is essential not only for the performance of the roofing material but also for complying with building codes and standards, which