7/8 coil roofing nails are a specialized fastener designed for roofing applications, offering fast, consistent driven performance with a coiled strip that feeds through pneumatic nailers. These nails are commonly used in asphalt shingle installations, fixing felt, and securing lightweight roofing materials. Understanding their size, material, and compatibility helps contractors choose the right nail for durable, weather-resistant results. This guide explains what 7/8 coil roofing nails are, how they differ from standard nails, and how to select and use them effectively in modern roofing projects.
What Are 7/8 Coil Roofing Nails
7/8 coil roofing nails are small-diameter, smooth or ring-shank fasteners connected by a continuous coil. The 7/8 inch refers to the shank length exposed during installation, which is optimized for roofing materials while minimizing nail head intrusion. The coil format allows roofing nailers to feed nails rapidly, improving installation speed without sacrificing drive depth. Common materials include galvanized steel for corrosion resistance and stainless steel for extreme moisture exposure. They are specifically designed to hold asphalt shingles, underlayment, and lightweight roof components securely in place.
Key Specifications To Consider
When selecting 7/8 coil roofing nails, consider these specifications to ensure compatibility and performance:
- Shank length: 7/8 inch for typical asphalt shingles and underlayment.
- Gauge: Most common gauges are 0.120 inches to 0.131 inches; higher gauges offer greater shear strength.
- Coil type: Coil nails in a smooth or ring-shank configuration; ring-shank provides better holding power in soft or deteriorated surfaces.
- Material: Galvanized steel for general use, stainless steel for coastal or wet environments.
- Coil pitch and nail count: Affects nailer performance and strip flexibility; higher coil counts reduce reloading frequency.
- Head style: Cupped or smooth heads; some heads are designed to minimize shingle splitting.
Materials And Corrosion Resistance
Material choice influences longevity and performance. Galvanized steel provides durable corrosion resistance suitable for typical residential roofing. Stainless steel offers superior corrosion resistance in harsh environments, such as coastal regions or areas with salt exposure. For tear-resistant applications or high-wind zones, consider copper-coated or specialty coatings that resist rust while maintaining drive depth. The coating type also affects friction in the nailer chamber, so ensure compatibility with the tool manufacturer’s recommendations.
Applications And Best Practices
7/8 coil roofing nails are versatile for several roofing tasks beyond asphalt shingles. They can secure roofing felt, lightweight underlayment, edge metal, and drip edge components. To maximize performance:
- Use a compatible pneumatic nailer designed for coil nails to ensure proper drive depth and nail seating.
- Set the nailer’s depth adjustment to achieve flush or slightly countersunk nail heads, preventing shingle damage.
- Avoid overdriving; excess penetration can compromise shingle integrity and water seal.
- Choose ring-shank nails in soft or worn substrates for improved hold, especially on wind-prone roofs.
- Store nails in a dry, clean area to prevent corrosion and jamming in the coil.
Installation Tips And Troubleshooting
Effective installation of 7/8 coil roofing nails requires attention to tool settings and material condition. Ensure nails feed smoothly from the coil and that the nail gun’s driver blade seals properly to prevent jams. If nails exhibit inconsistent driving or burrs near the head, recheck the nail type against the tool’s compatibility. For heavy or older shingles, a slightly deeper drive may be necessary, but avoid penetrating through the shingle backside. In dusty or windy conditions, use protective eyewear and maintain steady stance to prevent misfires.
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Choosing The Right 7/8 Coil Roofing Nails
Choosing the right 7/8 coil roofing nails involves aligning project demands with material properties and climate conditions. Factors include roof substrate, shingle type, anticipated wind loads, and exposure to moisture or salt. For typical residential roofs with asphalt shingles, galvanized steel 0.120–0.125 inch gauge, 7/8 inch shanks, and smooth or ring-shank configurations offer reliable performance. In coastal or corrosive environments, stainless steel nails provide longevity despite higher cost. Always verify compatibility with the roofing nailer and manufacturer installation guidelines.
Storage, Safety And Quality Assurance
Proper storage preserves nail integrity and performance. Keep coils in a dry, temperature-controlled area to prevent corrosion and deterioration of coating. Handle coils to avoid bending, which can cause jams during firing. Safety considerations include wearing eye protection, ensuring the nailer is in good working order, and following local building codes for fastener types and installation methods. High-quality nails from reputable manufacturers reduce the risk of corrosion, misfires, and compromised roof seals.
Cost And Availability
7/8 coil roofing nails balance cost and performance. Price varies by material, coating, and supplier. Galvanized coils are typically the most economical option, with stainless steel offerings at premium pricing due to superior corrosion resistance. Availability is generally strong through roofing supply houses and hardware retailers. For large projects, buying in bulk may reduce costs per coil and ensure a consistent supply of the correct nail type for all installations.