When choosing a new metal roofing for your home or business, color, material, and cost are often at the forefront of decision-making. However, there is another crucial factor that sometimes gets overlooked: how the roof is attached to your structure. The method of attachment, or fastening system, plays a significant role in both the roof’s durability and long-term performance.
When it comes to metal roofing systems, there are two primary fastening systems: standing seam (concealed fastener) and exposed fastener systems. Both of these systems come with their own set of advantages and disadvantages, and the right one for you depends on a variety of factors such as budget, design preferences, and the roof’s intended use.
At The Real Metal Roofing Company, we have over 20 years of experience working with both types of systems and aim to provide you with all the information you need to make an informed decision. This article will explore each system in detail, helping you understand the pros and cons of each, along with how they compare to other roofing materials on the market.
What is a Standing Seam Metal Roofing?
A standing seam metal roofing system consists of metal panels with raised seams or vertical legs that interlock. The metal panels are attached to the roof deck with hidden clips, and the seams are crimped over to cover the fasteners completely. This hidden fastener design gives the roof a sleek, modern look and enhances its ability to withstand weather exposure without the risk of water leaks where the fasteners are placed.
Standing seam metal roofing systems are commonly made from aluminum, steel, or zinc, and they are known for their durability, weather resistance, and long lifespan. Because the fasteners are hidden from view and shielded from the elements, the system provides superior protection from rain, snow, and wind-driven debris.
Key Features of Standing Seam Metal Roofing:
- Concealed fasteners for a sleek, modern appearance.
- Higher resistance to weather conditions and water infiltration.
- Panels can expand and contract with temperature changes.
- Ideal for low-slope roofing applications.
What is an Exposed Fastener Metal Roofing?
Exposed fastener metal roofing systems use metal panels that are fastened directly to the roof deck with screws that penetrate the surface of the metal. These fasteners remain visible, giving the system its name. Common panel types used in exposed fastener systems include corrugated panels, PBR panels, and R-panel systems.
Exposed fastener systems are often more affordable and easier to install than standing seam systems, making them popular for residential homes, agricultural buildings, barns, and even commercial applications that require a cost-effective roofing solution.
Key Features of Exposed Fastener Metal Roofing:
- Visible fasteners that penetrate the metal panels.
- A more affordable option compared to standing seam metal roofing.
- Available in a wide range of panel profiles, such as corrugated metal.
- Suitable for DIY installations due to simpler installation methods.
*Advantages of Exposed Fastener Metal Roofing
1. Affordability
One of the most significant advantages of exposed fastener metal roofing systems is their affordability. The cost of an exposed fastener roof is considerably lower than that of a standing seam system due to several factors:
- Less Expensive Metal: Exposed fastener roofs typically use thinner, lighter gauge metal panels (usually 26 or 29 gauge) than the heavier gauge (22 or 24 gauge) panels used in standing seam systems. Thinner panels mean lower material costs.
- Simpler Installation: The installation of an exposed fastener system requires fewer steps, resulting in reduced labor costs. Additionally, the installation process is easier, which means more contractors are qualified to install these systems, further driving down labor expenses.
- Fewer Accessories: Exposed fastener systems require fewer accessories, such as clips and specialty trim. For example, while a ridge cap for a standing seam roof requires multiple pieces, an exposed fastener ridge cap is a simple, one-piece system.
This cost advantage makes exposed fastener systems particularly appealing to homeowners with tight budgets or those seeking an economical solution for large structures like barns, storage facilities, or commercial buildings.
2. Simpler Installation Process
The simpler installation process of an exposed fastener roof is another significant advantage. Fewer steps are involved compared to a standing seam system, making installation faster and easier for roofing contractors or even DIY enthusiasts. This reduced complexity means less specialized skill is required, giving you access to a broader pool of contractors who are capable of installing the system correctly.
Because the fasteners are visible and installed directly through the panels, there’s no need for crimping or sealing the seams as required with a standing seam roof. In most cases, the installation process can be completed in a matter of days, depending on the size and complexity of the roof.
3. DIY-Friendly
Homeowners who are handy with tools and enjoy tackling home improvement projects may find exposed fastener metal roofing to be an excellent DIY opportunity. Since the installation process is straightforward and doesn’t require specialized equipment, DIYers can save on labor costs and complete the project at their own pace.
Many metal roofing suppliers, including home improvement stores, offer corrugated or PBR panels that are easy to transport and install. Just be sure to do thorough research on proper installation techniques, including how to handle fasteners and flashing, to ensure your roof is secure and weatherproof.
4. Readily Available
Exposed fastener metal roofing panels are widely available at home improvement stores and through metal roofingmanufacturers. Because these panels are mass-produced in standard profiles and colors, you’ll have no trouble finding the materials you need for your project.
For those looking for a more specific color or finish, purchasing directly from a manufacturer like The Real Metal Roofing Company will offer a wider range of options, including custom colors and specialty finishes. This availability makes exposed fastener systems an attractive choice for those who want a quick and cost-effective solution.
*Disadvantages of Exposed Fastener Metal Roofing
1. More Maintenance Required
Although metal roofing is known for its durability and long lifespan, exposed fastener systems require more maintenance than standing seam systems. The primary reason for this is the visible fasteners, which are exposed to the elements and can loosen over time.
During routine roof inspections, you’ll need to check that the fasteners are still securely in place and that none have come loose or backed out of the panels. Additionally, the rubber washers that seal the fasteners may degrade over time and need to be replaced to prevent water infiltration.
2. Greater Risk of Leaks
Because the fasteners penetrate the panels, each screw hole creates a potential entry point for moisture. If the fasteners become loose or the rubber washers deteriorate, water can seep through the holes and into the roof deck. This is especially concerning in areas with heavy rainfall, snow, or ice.
To minimize the risk of leaks, it’s essential to perform regular maintenance and ensure that all fasteners remain tightly secured and in good condition. This extra layer of maintenance may not appeal to homeowners looking for a low-maintenance roofing solution.
*Advantages of Standing Seam Metal Roofing
1. Fewer Fastener Replacements
Unlike exposed fastener systems, standing seam systems use hidden clips or concealed fasteners to attach the panels to the roof deck. These fasteners are protected from exposure to the elements, which reduces the risk of corrosion and wear over time. As a result, standing seam roofs typically require fewer fastener replacements or adjustments, making them a more low-maintenance option.
2. Superior Weather Resistance
One of the most significant advantages of standing seam metal roofing is its ability to withstand harsh weather conditions. Because the fasteners are hidden and there are no exposed screw holes, standing seam roofs provide excellent protection against water infiltration. The interlocking seams also create a continuous barrier against wind, rain, and snow, making this system particularly well-suited for areas prone to severe weather.
Standing seam metal roofs are highly durable and can last 40 to 70 years or more with minimal maintenance, making them a wise investment for homeowners looking for long-term protection.
3. Accommodates Expansion and Contraction
Metal expands and contracts with temperature fluctuations, and a roofing system needs to account for this movement to prevent damage to the panels or fasteners. Standing seam systems are designed to accommodate the natural expansion and contraction of metal, reducing the risk of warping, buckling, or fastener loosening over time.
This feature makes standing seam roofs ideal for regions with extreme temperature changes, where the metal can expand significantly during the day and contract at night. The hidden clip system used in standing seam roofs allows the panels to “float” over the roof deck, absorbing these movements without compromising the roof’s integrity.
4. Sleek, Modern Appearance
Aesthetics are subjective, but many homeowners prefer the clean, modern look of standing seam metal roofing. The concealed fasteners and continuous vertical lines create a sleek, minimalist appearance that complements a wide range of architectural styles, from contemporary homes to traditional buildings.
In addition to their visual appeal, standing seam roofs are available in a variety of colors and finishes, allowing homeowners to customize the look of their roof to match their home’s exterior design.
5. Ideal for Low-Slope Roofs
Another significant advantage of standing seam metal roofing is its suitability for low-slope roofing applications. Because the seams are raised and the fasteners are hidden, standing seam roofs are better suited for low-slope roofs compared to exposed fastener systems. In fact, standing seam roofs can be installed on roofs with slopes as low as 1:12, meaning the roof rises one inch for every twelve inches of horizontal distance. This makes them an excellent option for modern architectural designs with low-pitched roofs that still need reliable water protection.
By contrast, exposed fastener roofs are generally not recommended for roofs with a slope lower than 3:12, as the screw penetrations increase the likelihood of water infiltration on low-slope applications.
6. Compatible with Solar Panels and Other Roof Additions
If you’re planning to add solar panels or other rooftop accessories, such as snow retention systems, a standing seam metal roof provides a significant advantage. The raised seams of the standing seam system make it easy to attach solar panel mounting systems without drilling into the metal or compromising the integrity of the roof.
Solar panel brackets (such as the popular S-5 clamps) are specifically designed to attach to the standing seams, ensuring a secure connection without penetrating the panels. This means you can install solar panels without worrying about leaks or damaging the roof, making it a great eco-friendly option for homeowners looking to go green.
*Disadvantages of Standing Seam Metal Roofing
1. Higher Cost
The most significant drawback of standing seam metal roofing is its higher cost compared to exposed fastener systems. Standing seam roofs are typically more expensive due to the thicker, more durable materials used, the complexity of the installation, and the hidden fastener system that requires additional accessories such as clips.
While the cost of a standing seam roof can vary depending on factors like material, roof size, and location, it’s not uncommon for standing seam roofs to cost 1.5 to 3 times as much as an exposed fastener roof. For homeowners on a tight budget, this higher upfront investment may be a dealbreaker.
However, it’s essential to consider the long-term savings associated with a standing seam roof, such as reduced maintenance costs, fewer repairs, and an extended lifespan. In many cases, the higher initial investment pays off over time, making standing seam metal roofing a smart choice for those who plan to stay in their homes for the long term.
2. More Complex Installation
Installing a standing seam metal roof requires specialized skills and equipment, making it a more complex and time-consuming process compared to exposed fastener systems. The panels must be crimped together at the seams, and the hidden fasteners or clips need to be carefully aligned to ensure a secure connection.
This complexity not only increases labor costs but also limits the number of contractors who are qualified to install standing seam roofs. It’s crucial to hire a contractor with experience in metal roofing installation to avoid mistakes that could lead to leaks, oil canning, or other issues down the line.
Additionally, repairs on a standing seam roof can be more complicated and time-consuming, as individual panels may need to be removed and replaced without damaging the surrounding panels. This can add to the overall maintenance cost, although repairs are typically infrequent due to the durability of the system.
*Choosing Between Standing Seam and Exposed Fastener Metal Roofing
Both standing seam and exposed fastener metal roofing systems offer distinct advantages, and the right choice for you will depend on your specific needs, budget, and aesthetic preferences. Here are some key considerations to help guide your decision:
Choose Standing Seam if You:
- Have a flexible budget and are willing to invest more upfront for long-term durability.
- Want a sleek, modern appearance with concealed fasteners.
- Live in an area prone to extreme weather conditions or temperature fluctuations.
- Have a low-slope roof that requires a watertight system.
- Plan to install solar panels or other rooftop additions in the future.
- Prefer a low-maintenance metal roof that requires fewer fastener replacements over time.
Choose Exposed Fastener if You:
- Are on a tight budget and need an affordable metal roofing option.
- Don’t mind the appearance of visible fasteners and prefer a more industrial or rustic look.
- Want a simpler installation process that can be completed quickly or as a DIY project.
- Have a steeper roof slope (3:12 or higher) where water infiltration is less of a concern.
- Are installing the roof on a non-residential structure like a barn, shed, or agricultural building.
- Are willing to perform more frequent maintenance checks on the fasteners and sealants.
*Final Thoughts on Standing Seam vs. Exposed Fastener Metal Roofing
When choosing between standing seam and exposed fastener metal roofing systems, it’s essential to weigh the pros and cons of each based on your specific needs and preferences. Both systems offer the durability and longevity that metal roofing is known for, but they differ in terms of cost, appearance, and maintenance requirements.
Standing seam metal roofs are ideal for homeowners seeking a sleek, modern look and superior weather resistance, especially in areas with extreme weather conditions. They provide excellent protection against water infiltration and require less maintenance over time, making them a long-term investment worth considering.
On the other hand, exposed fastener metal roofing systems offer an affordable, DIY-friendly option that is perfect for those on a budget or working on non-residential projects. While they may require more frequent maintenance and are more prone to leaks, they remain a popular choice for many homeowners and businesses due to their lower cost and easy installation.
Ultimately, the choice between standing seam and exposed fastener metal roofing depends on your budget, aesthetic preferences, and the specific needs of your building. By carefully considering the advantages and disadvantages of each system, you can make an informed decision that will provide lasting protection and value for your home or business.
If you’re ready to explore your options for metal roofing, contact The Real Metal Roofing Company. We offer a wide range of high-quality metal roofing panels in both standing seam and exposed fastener systems, along with expert advice to help you choose the best system for your project. Reach out to our team today to learn more about our products and services, or to schedule a consultation with one of our metal roofing specialists.