Rolled roofing, also known as mineral-surfaced roofing (MSR), is a cost-effective and straightforward roofing solution used on low-slope or flat roofs. It’s a practical choice for various structures like sheds, garages, and porches. One critical aspect of installing rolled roofing is selecting the right nails for the job. In this article, we will provide a concise and clear technical overview of the nails used for rolled roofing, ensuring that both technical experts and novices can understand the essentials.

Rolled Roofing Nails: Key Considerations

1. Material

Rolled roofing nails are typically made from galvanized steel or aluminum. These materials offer corrosion resistance, which is essential to ensure the long-term durability of the roofing system.

2. Shank Type

The shank of rolled roofing nails can be smooth or ring-shanked. Ring-shanked nails have small ridges on the shaft, providing better holding power. For rolled roofing, ring-shanked nails are often recommended because they grip the roofing material more securely, reducing the risk of wind damage.

3. Length

The length of the nail is a crucial factor. Rolled roofing materials are relatively thin, so the nails need to be long enough to penetrate through the material and into the roof deck beneath. Typically, nails for rolled roofing range from 1 to 1.5 inches in length.

4. Head Type

Nails for rolled roofing usually have a broad, flat head. The flat head helps secure the roofing material effectively, preventing it from lifting or curling at the edges, which can lead to leaks.

Installation Guidelines

1. Nail Spacing

Proper nail spacing is essential to secure the rolled roofing material. Typically, nails should be spaced every 3 to 4 inches along the overlap seams. At the edges, nails should be placed about 1 inch from the edge to prevent tearing. Refer to the manufacturer’s guidelines for precise nail spacing recommendations for your specific rolled roofing product.

2. Overlap

Rolled roofing materials are typically installed in overlapping layers. Nails should be placed through the overlapping portion to secure both layers effectively. This prevents water from infiltrating the seams and causing leaks.

3. Angle

When driving the nails, ensure they are angled slightly downward to encourage water runoff. This helps prevent water from pooling and potentially damaging the roofing material.

Tools Required

• Hammer: A standard roofing hammer with a flat head is commonly used for driving rolled roofing nails. Alternatively, a nail gun designed for roofing applications can expedite the process.

Common Mistakes to Avoid

• Underdriving Nails: Ensure the nails penetrate through the rolled roofing material and into the roof deck. Underdriven nails can lead to loose roofing material and leaks.

• Overdriving Nails: Overdriven nails can damage the roofing material or the deck below. The nail heads should sit flush with the material surface.

• Incorrect Nail Length: Using nails that are too long may penetrate the roof deck and cause damage. Conversely, using nails that are too short may not securely hold the roofing material.

Conclusion

Selecting and installing the right nails for rolled roofing is a critical aspect of ensuring the longevity and effectiveness of your roofing system. Pay close attention to the type, length, and head design of the nails to prevent leaks, wind damage, and other issues.

By following the recommended guidelines and avoiding common installation mistakes, you can confidently undertake your rolled roofing project, whether you’re a seasoned professional or a DIY enthusiast. Choosing the correct nails and installing them properly is a fundamental step in achieving a reliable and long-lasting rolled roofing solution.