What are common types of Metal Roof Fasteners & Rivets?

Metal roof fasteners and rivets play a crucial role in ensuring the stability, durability, and performance of metal roofing systems. These components secure metal panels in place, preventing them from dislodging or shifting due to wind, thermal expansion, and other environmental factors. Properly selected and installed fasteners better maintain the structural integrity of the roof, contributing to its longevity and resistance to leaks. In this blog, we will cover several factors you should consider when choosing metal roof fasteners to achieve optimal results, such as type, material, cost, and application.

One of the most common types of fasteners for metal roofs are screws. These fasteners are designed to penetrate the metal panels and underlying substrate, providing a secure attachment. Screws come in various forms, a popular choice for this particular application being hex head screws due to their ease of installation and strong holding power. The cost of screws can vary depending on their type and material, with high-quality, corrosion-resistant screws made from materials like galvanized steel or stainless steel being more expensive while offering greater longevity and performance.

Another notable type of metal roof fastener are rivets, which are used to join two metal panels together by creating a permanent bond. They are especially useful in areas where screws might not be practical, particularly for interlocking metal panels where a smooth, continuous surface is desired. Installation generally requires utilizing a rivet gun, which adds to the initial cost, but the rivets themselves are relatively inexpensive and the resulting bond is incredibly strong and resistant to vibrations and movement. Rivets are typically made from aluminum or steel and are known for their high shear strength and durability, promoting their common use.

Furthermore, hex nuts are a type of fastener frequently used in roofing, particularly for securing metal panels to a framework or substrate. It must be noted that hex nuts are used in conjunction with bolts and washers to create a strong and adjustable connection. This type of fastener is advantageous in situations where panels need to be frequently adjusted or removed, and as the cost of hex nuts is relatively low, they are an economical choice for many roofing projects.

When selecting metal roof fasteners, it is essential to consider the specific requirements of the roofing system, including the type of metal panels present, environmental conditions, and the expected lifespan of the roof. Durability and corrosion resistance are also key factors, especially in areas with harsh weather conditions or high humidity. The cost of fasteners should be weighed against their performance and longevity, as investing in high-quality fasteners can prevent costly repairs and maintenance in the long run.

Moreover, be mindful of the performance testing and standards that these fasteners adhere to. While tests may vary depending on the manufacturer, there are common standards that most fasteners and their coatings are rated for. For example, pullout value tests measure the amount of force required to pull the fastener straight out from a specific material, a critical value in determining the fastener's ability to securely hold metal panels in place under various conditions. Furthermore, tensile strength tests evaluate the maximum amount of force that can be applied to the fastener before it breaks, while torsional value tests measure the amount of torque that can be applied to the fastener before it fails. Additionally, shear strength tests measure the force required to rip the fastener head off when force is applied downward, indicating the fastener's ability to resist forces that might try to shear it off, such as heavy snow or ice sliding down the roof. Such metrics are important for assessing the fastener's ability to be installed without breaking, which is especially relevant for fasteners that need to be driven into dense materials like metal.

Beyond individual fastener tests, it is also crucial to consider that fasteners are part of a larger engineered assembly within a metal roofing system. This means that the testing applies not only to the fasteners themselves, but also to the spacing of clips for panel attachment, sizing, type, and quantity of fasteners used in the system. Properly engineered systems ensure that all components work together to provide optimal performance, enhancing the overall strength and durability of the roof.

In summary, the types of metal roof fasteners and rivets each offer unique advantages and considerations, and making informed decisions about which to use can ensure the success and longevity of metal roofing systems. Here on Buy Aviation Parts, you can find countless fasteners that are eligible for competitive pricing and rapid shipping times. Have full confidence in the caliber of our products knowing that we always go above and beyond industry standards for quality control through practices like vetting each manufacturer we work with as necessary and abiding by a strict NO CHINA SOURCING pledge. Keeping this in mind, do not hesitate to request quotes on any items of interest with our online RFQ forms. We offer rapid responses to quote requests after reviewing them, always providing customers with procurement options that cater to their unique specifications. To learn more about what we promise as a dependable partner in procurement, get in contact with us at any time.


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December 9, 2021

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