When designing and installing a metal roof, choosing between fixed clips and expansion clips is crucial for ensuring the roof’s longevity and performance. These clips secure metal panels to the roof deck and accommodate thermal expansion and contraction, which is essential for preventing issues like warping or buckling.
What Are Fixed and Expansion Clips?
Clips are fastening points that secure metal roof panels while allowing the panels to handle natural movement due to temperature changes. Without proper clips, roofs are vulnerable to stress and structural damage.
- Fixed clips secure panels without allowing movement. They’re best for smaller installations or roofs where minimal movement is expected.
- Expansion clips allow for panel movement, making them ideal for larger roofs or projects in regions with significant temperature fluctuations.
Fixed Clips: Secure but Limited Movement
Fixed clips are commonly used on standing seam roofs up to 10 feet in length. For larger spans, expansion clips are necessary to accommodate more significant thermal movement.
- Best for smaller roofs or projects with minimal temperature changes.
- Over time, fixed clips may cause buckling if used on longer spans where movement is more pronounced.
Expansion Clips: Designed for Flexibility
Expansion clips allow panels to move freely as temperatures rise and fall. They are crucial for roofs longer than 10 feet or in regions with extreme climates.
- Ideal for larger roof installations and flexible materials like zinc and aluminum.
- Expansion clips prevent warping and increase the lifespan of the roofing system.
Clip Size and Material
For both fixed and expansion clips, the standard size is 1 inch. However, for zinc roofing, use 1-1/4 inch clips to account for special underlayment. All clips should be made of stainless steel to ensure corrosion resistance.
When to Use Each Clip Type
Choosing between fixed clips and expansion clips depends on the project specifics. Fixed clips can be used on standing seam panels up to 10 feet long, but beyond that, expansion clips are required. The exact placement depends on the unique factors of the building, such as roof size and climate.
If you’re unsure which clips to use for your project, reach out to us for expert guidance.
Fasteners for Clips: Ringshank Nails vs. Screws
When attaching clips, ringshank nails provide superior holding power compared to screws, making them the best option for securing both fixed and expansion clips. Learn more in our article: Ringshank Nails vs. Screws for Roofing.
Conclusion: Choosing the Right Clip System
Both fixed clips and expansion clips are essential to creating a durable and long-lasting metal roof. For larger roofs or areas with significant temperature variations, expansion clips are a must. If you need assistance choosing the right clips for your project, contact Spengler Industries for expert advice.
Learn more:
Thermal Expansion in Metals – For a deeper dive into the science of thermal expansion and contraction, click here: Thermal Expansion Explained by Britannica
Ready to ensure your metal roof stands the test of time? At Spengler Industries, we offer expert guidance on choosing the right cleat system to fit your project’s unique needs. Whether you’re looking to enhance your roof’s durability or prevent costly damage from thermal expansion, we’re here to help. Contact us today to speak with our team of specialists and explore our range of metal roofing solutions.
Call or email now and get the support you need for a long-lasting, high-performance roof!
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