When it comes to roofing, one of the most important decisions you will make is choosing the right shingles for your home. Shingles not only protect your roof from harsh weather elements but also contribute to the overall aesthetics of your property. One of the common features found in modern shingles is a self-sealing strip. This strip is designed to adhere to the shingle above it, creating a tight seal that helps to prevent water infiltration. However, homeowners often wonder if it is possible to drive a nail through this self-sealing strip. In this article, we will explore the impact of driving a nail through the self-sealing strip and discuss the reasons why it is generally not recommended.
Understanding the Self-Sealing Strip
Before we delve into the issue of driving a nail through the self-sealing strip, it is important to understand what this strip actually is and what purpose it serves. The self-sealing strip is a narrow adhesive strip located on the backside of each shingle. It is typically made of a durable asphalt-based material that activates when exposed to heat. During installation, when the shingles are exposed to sunlight and warmth, this strip gradually bonds with the shingle above it, creating a watertight seal.
Impact of Driving a Nail Through the Self-Sealing Strip
While it may seem tempting to drive a nail through the self-sealing strip to secure the shingles more firmly, doing so can have negative consequences. This action compromises the integrity of the strip and can lead to issues such as leaks, damaged shingles, and reduced durability. Here are the main reasons why it is generally not recommended to drive a nail through the self-sealing strip:
- Compromised seal: When a nail is driven through the self-sealing strip, it creates a hole in the strip. This can cause water to infiltrate through the hole and seep into the underlying layers of the roofing system. Over time, this water intrusion can lead to leaks and water damage, potentially requiring costly repairs.
- Reduced shingle lifespan: The self-sealing strip plays a crucial role in enhancing the longevity of the shingles. By driving a nail through this strip, you disrupt the adhesion process and compromise the shingle’s ability to form a strong bond. This can result in premature shingle failure, decreasing the lifespan of your roof.
- Weakened shingle structure: Driving a nail through the self-sealing strip weakens the shingle’s structure at the pierced location. This weakened area is more vulnerable to wind uplift, making it easier for shingles to be blown off during storms. This can leave your roof exposed to further damage.
Alternative Methods for Securing Shingles
If you require additional fastening for your shingles, there are alternative methods you can employ without damaging the self-sealing strip. These methods include:
- Utilizing roofing cement: Roofing cement, also known as roofing adhesive, can be used to secure shingles without compromising the self-sealing strip. Apply a small amount of roofing cement to the backside of the shingle, near the corners and edges. This will help provide extra adhesion, particularly in high-wind areas.
- Using designated nail zones: Instead of driving nails through the self-sealing strip, opt for designated nail zones. The manufacturer’s instructions will typically indicate where these zones are located. By following these guidelines, you can ensure proper securing of the shingles while maintaining the integrity of the self-sealing strips.
While it may be tempting to drive a nail through the self-sealing strip of your shingles for added security, it is generally not recommended. Doing so can compromise the seal, reduce the shingle’s lifespan, and weaken the overall structure. Instead, consider alternative methods such as using roofing cement or following designated nail zones to ensure proper installation. By avoiding the damage to the self-sealing strip, you can protect your roof, prevent leaks, and extend the durability of your shingles. Always consult with a professional roofer for best practices and expert advice before making any decisions related to your roofing system.