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Standing Seam vs. Through-Fastened Metal Roofing: What’s the Difference?
- Mason Buchette
- Jun 24
- 3 min read
Metal roofing is a popular choice for its durability, longevity, and aesthetic appeal. However, not all metal roofs are created equal. Two of the most common types of metal roofing systems are standing seam (concealed fastened) and through-fastened (also called exposed fastener) roofs. Understanding the differences between these systems can help you make the best choice for your home or project.
What is Standing Seam Metal Roofing?
Standing seam metal roofing is a premium roofing system characterized by raised seams that run vertically along the roof panels. These seams conceal the fasteners, giving the roof a sleek and modern appearance while providing superior protection against leaks and weather damage.
Key Features of Standing Seam Metal Roofing:
Concealed Fasteners: Fasteners are hidden beneath the panels and special trims, protecting them from exposure to weather and reducing the risk of leaks.
Durability: This system is highly resistant to water penetration and wind uplift, making it ideal for harsh weather conditions. Standing Seam roofs are usually a thicker gauge material than through fastened systems.
Aesthetics: The clean, uninterrupted lines of standing seam roofing are popular for use in modern and high-end designs.
Longevity: With proper installation, standing seam roofs can last 70 years or more.
Flexibility: Standing seam systems can accommodate thermal expansion and contraction, reducing stress on the panels and fasteners over time.
What is Through-Fastened Metal Roofing?
Through-fastened metal roofing, also known as exposed fastener roofing, features panels that are fastened directly to the roof deck with screws. The fasteners remain visible on the surface of the roof, which is a key distinction from standing seam systems.
Key Features of Through-Fastened Metal Roofing:
Visible Fasteners: The screws and washers are exposed, creating a more industrial or rustic appearance.
Cost-Effective: This system is generally less expensive than standing seam roofing, making it an attractive option for budget-conscious projects.
Easier Installation: The simpler installation process can reduce labor costs and time.
Longevity: While durable, through-fastened roofs typically last 40 to 50 years, depending on maintenance and environmental factors.
Limited Flexibility: The panels are more rigid, which can lead to stress at the fastener points due to thermal expansion and contraction.
Comparing Standing Seam and Through-Fastened Metal Roofing
Here’s a side-by-side comparison of the two systems:
Feature | Standing Seam | Through-Fastened |
Fastener Visibility | Concealed | Exposed |
Cost | Higher | Lower |
Lifespan | 40-70+ years | 40–50 years |
Weather Resistance | Excellent | Moderate |
Thermal Expansion | Accommodates expansion | Limited flexibility |
Aesthetics | Sleek, modern | Rustic, industrial |
Installation Complexity | Requires skilled labor | Easier to install |
Maintenance | Minimal Maintenance | Moderate Maintenance |
Choosing the Right System for Your Project
The choice between standing seam and through-fastened metal roofing depends on your priorities, budget, and the specific requirements of your project. Here are some factors to consider:
Budget: If you’re working within a tight budget, through-fastened roofing is a more cost-effective option. However, for long-term savings and minimal maintenance, standing seam may be a better investment.
Aesthetics: Standing seam roofs are ideal for modern or high-end homes, while through-fastened roofs suit rustic, agricultural, or industrial designs.
Climate: If you live in an area with extreme weather, the superior weather resistance of standing seam roofing may be worth the additional cost.
Longevity: For a roof that lasts decades with minimal maintenance, standing seam is the clear winner.
Conclusion
Both standing seam and through-fastened metal roofing systems have their advantages, and the right choice depends on your specific needs and preferences. Standing seam roofs offer unparalleled durability, weather resistance, and sleek aesthetics, while through-fastened systems provide a more affordable and rustic alternative.
Consult with a pro at True Metal Supply to discuss your goals and determine which system is the best fit for your project. No matter which option you choose, a metal roof is a durable and attractive solution that can add value and protection to your property.
Want to see a quote for a metal roof on your project? Get in contact with a True Service Representative by clicking here or calling 888-455-8783.
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