Choosing the Right Gauge: The Benefits of a 24 Gauge Metal Roof Over 26 Gauge

The Benefits of a 24 Gauge Roof Over 26 Gauge

When choosing metal roofing, it’s important to consider the type of metal and other factors before deciding on the gauge. It’s recommended to make decisions about the type of metal and other features before finalizing the gauge for your metal roofing panels.  The reason why gauge is typically chosen last is because it may already be predetermined by the other options you select. For instance, if you opt for a standing seam metal roof or a flush wall siding panel, you will automatically be using 24 gauge as lighter gauge sheets are not available for these specific applications.  

The Real Metal Roofing Company has a long-standing history of producing and installaing metal roofing panels for over twenty years, assisting numerous customers in selecting the appropriate metal panels for their construction projects. Through our extensive experience, we have found that one commonly overlooked decision is determining the appropriate gauge of metal to use.  

Metal roofing does not have a standard gauge, but typically 24-gauge and 26-gauge are the preferred thickness for residential and commercial applications. It’s important to consider the specific requirements of each project to determine which gauge thickness is the best choice.  

In this article, we will discuss the factors to consider when choosing between 24 gauge and 26 gauge metal for roofing panels, so you can make an informed decision about which option is best for your needs.  

What is the process for determining metal gauge size?

Metal roofing is available in various gauge types, with 22, 24, 26, and 29 gauges being the most common. It’s important to note that the lower the gauge number, the thicker the metal. So, for example, 22 gauge metal is thicker than 29 gauge metal.  

What Gauge Is Standing Seam Metal Roofing?

Standing seam roofs are a top choice for many homeowners due to their conceal fasteners, PVDF paint finish, and heavy gauge steel. These features make standing seam roofs incredibly durable and long-lasting, often designed to be a lifetime roof. Typically, these roofs are made with 24 gauge steel panels.  

Purchasing an expensive roof system and then manufacturing it in a 26 gauge or 29 gauge metal would not be cost-effective. While you may save on the initial cost, using lighter gauge metal can significantly reduce the longevity of the panel.

A 22 gauge standing seam metal roofing may be a good choice to reduce the likelihood of oil canning, but it comes with a higher cost of about 20%. It is generally uncommon and often unnecessary to opt for anything heavier than 24 gauge.  

Corrugated Metal Roofing Thickness

The gauge for an exposed fastener metal roofing system is not standardized. The correct gauge is determined primarily by whether the panel is installed on a solid wood substrate or spanning from support to support.  

Residential Metal Roofing Over A Solid Wood Substrate

The most common type of residential metal roofing installation involves a solid wood substrate, roofing underlayment, and the installation of the metal panel on top. This method does not require the panel to support any weight.  

Either 24 or 26 gauge are appropriate for this type of metal roofing installation. Each has its pros and cons that are discussed later in this article.

Metal Roofing Spanning From Support To Support

This roof is constructed with either metal purlins or wood beams that are spaced at various distances. The panels must be able to support themselves and any additional weight, such as snow or people walking on it, and also withstand strong winds.  

24 gauge metal roofing has the ability to cover larger distances and support heavier loads than 26 gauge. However, it’s important to note that every project is unique, and load charts and uplift charts are utilized to determine the appropriate metal roofing gauge for handling specific load requirements.  

24 Gauge Vs. 26 Gauge Metal Roofing Thickness

The numbers on the gauge refer to the decimal thickness of the steel, with each gauge having a specific range. For example, when comparing 24-gauge and 26-gauge steel, there is an approximate 30% difference in thickness between the two metals.  

Applying a paint finish to the base metal will result in an increase in the overall thickness of the metal. The metal roofing gauge thickness is determined based on the measurement of the base metal before the paint is applied.  

Weight Of Metal Roofing Panels

24-gauge roofing panels are heavier than 26-gauge panels, with a 30% difference in weight. It’s important to note that the weight of each gauge can vary within a range, similar to their thickness.  

When Should You Use A Thicker Metal Roof Panel?

Both 24 gauge and 26 gauge panels offer the durability of metal. They are fire-resistant, require minimal maintenance, and offer protection against corrosion. However, the thickness of the panel does affect its durability, making 24 gauge metal roofing a preferable choice for harsher climates.  

Why Is 24 Gauge Metal Roofing Better For Climates With Snow? 

For harsher climates that experience snow, heavy winds, and hail, it is recommended to use a thicker gauge metal roof. A 24 gauge metal roof provides more strength, better impact resistance to hail, and can handle higher winds and heavier snow loads compared to a 26 gauge metal roof.  

Metal Panel Paint Options Based On Gauge 

Remember, before choosing the type of paint finish for your project, it’s important to consider the differences between PVDF and SMP. PVDF paint systems are known for fading at a slower rate than SMP panels, making them especially ideal for bright and vibrant colors. Keep in mind that color fade is less noticeable on white or tan surfaces compared to green or red ones.

PVDF Paint System And Gauge

This is because PVDF coatings are typically used for high-performance applications and require a thicker gauge metal to provide the necessary strength and durability. The coating itself is also quite thick, with multiple layers being applied during the manufacturing process to ensure maximum protection against weathering, fading, and corrosion.

This makes it an ideal choice for roofs in areas with harsh climates or extreme exposure to sunlight. Additionally, PVDF coatings offer excellent color retention properties, meaning your roof will maintain its vibrant appearance for years to come without needing frequent repainting or touch-ups.

Overall, while a PVDF paint system may have a higher upfront cost compared to other options, it can provide long-term savings by reducing maintenance and replacement costs over time. So if you want your metal roofing project to truly stand the test of time and look great doing it, consider investing in a quality PVDF paint system.

SMP Paint System And Gauge

SMP stands for “silicone-modified polyester,” and it is a type of paint finish commonly used on metal roofing panels.

This type of finish offers excellent durability and weather resistance, making SMP an attractive choice for homeowners looking to invest in a long-lasting roofing solution. However, one downside to SMP painted panels is that they are typically only available in 26 gauge thickness. While this may be sufficient for some projects, those looking for thicker or sturdier metal roofing may need to look elsewhere.

Additionally, the color selection for SMP painted panels is often more limited compared to other types of finishes. Despite these limitations, many homeowners still find that SMP painted panels offer value and quality at a more affordable price point compared to other options.

Ultimately, the decision whether or not to choose SMP painted panels will depend on your specific needs and preferences as well as the availability of colors and gauges from your chosen supplier.

It is important to select the appropriate paint finish as it will help determine the gauge of the panels to be used.

Decrease Oil Canning With Heavier Gauge Metal Panels

For example, a thicker gauge panel may have a smoother and more uniform surface due to its stronger composition. This can result in a cleaner and more polished look for your roof.

On the other hand, thinner gauge panels may appear slightly wavy or rippled as they are not as strong and easily conform to the underlying structure of your roof.

While these differences may seem minor, they could play a role in enhancing or detracting from the overall appearance of your home. It is important to consider both the durability and aesthetics when choosing the gauge of metal for your roof.

Additionally, thicker gauge panels are able to withstand harsher weather conditions such as heavy rain, hail, or high winds without getting damaged. Thinner gauges may be more prone to denting or warping under these circumstances.

Ultimately, it is important to consult with a roofing professional who can assess your specific needs and recommend an appropriate panel gauge for your individual project.

By considering both functionality and aesthetics, you can ensure that you choose a metal roof that not only protects but also enhances the beauty of your home for years to come.

Oil canning not only affects the aesthetic appeal of a roof, but it can also lead to long-term structural damage if left untreated.

The 24-gauge metal roof is less prone to oil canning compared to the 26-gauge roof due to its increased thickness. Additionally, the 24-gauge roof is also less likely to sustain dents or punctures from hail or debris, making it a more durable option.  

It is important for metal roofing manufacturers to address this issue and find solutions that will minimize or eliminate oil canning altogether. One solution that has been found effective in reducing oil canning is the use of stiffening ribs on the backside of metal panels. These ribs help distribute tension and pressure more evenly, preventing the formation of wrinkles on the surface.

Proper installation techniques also play a crucial role in preventing oil canning. Installing metal panels with proper spacing and ensuring screws are not over tightened will reduce stress on the panels and decrease their susceptibility to forming wrinkles.

Ultimately, addressing oil canning is an ongoing process in the world of metal roofing. Manufacturers continue to innovate and improve upon existing methods while also seeking out new ways to combat this common issue. As technology advances, we hope to see even more effective solutions emerge in order to provide customers with durable and visually pleasing metal Roofs.

Metal Roofing Prices By Gauge

Naturally, as the thickness of the panel increases, so does the cost. Therefore, a 24 gauge metal roofing will be more expensive than a 26 gauge.  

24 Gauge Metal Roofing Prices

The cost of 24 gauge metal roofing varies between $1.50 and $5.50 per square foot, with the price determined by the specific panel and finish selected. A detailed breakdown of prices for each category is provided below.  

24 Gauge Standing Seam Metal Roof Cost

Galvalume/Galvanized Cost – $2.00 to $2.50 Per Sq. Ft.
PVDF Painted Standing Seam Cost – $2.50 to $4.50 Per Sq. Ft.

26 Gauge Metal Roofing Prices

26 gauge metal roofing prices range from $1.00 to $1.50 per sq. ft. depending on the finish and type of panel.

26 Gauge Corrugated Metal Cost

Galvalume/Galvanized Cost – $1.00 to $1.50 Per Sq. Ft.
SMP Painted Corrugated Cost – $1.20 to $1.50 Per Sq. Ft.

26 Gauge Standing Seam Panels Cost

Galvalume/Galvanized Cost – $1.50 to $2.20 Per Sq. Ft.

SMP Painted SMP Painted – $1.50 to $2.00 Per Sq. Ft.

Should You Use 24 Gauge Or 26 Gauge Metal Panels For Residential Roofing?

Thicker panels offer increased durability, but they come with a higher price tag and may not be essential for every home.  

Here are some general guidelines for determining the best times to use each panel.  

You Should Use 24 Gauge Metal Panels If:

In cases of severe weather conditions, such as hail, strong winds, or heavy snow, it is recommended to use 24 gauge metal panels for your roofing.
Not only are these panels thicker and more durable, but they also have a greater resistance to oil canning and dents caused by hail storms.

This is especially important if the metal roof will be spanning from support to support and requires a heavier gauge thickness.

Additionally, if you plan on purchasing a standing seam metal roof with a PVDF paint system, 24 gauge panels are the ideal choice for both practicality and aesthetic purposes.

You Should Use 26 Gauge Metal Panels If:

For those on a budget seeking an economical option, 26 gauge metal panels are recommended.

This is especially suitable for roofs situated in moderate weather conditions without frequent exposure to snow, hail, or storms.

Additionally, these panels are ideal for commercial or agricultural projects and when using an exposed fastener metal roofing panel with an SMP paint system.

Choosing The Right Metal Roofing Color

During our discussion, we covered the three key decisions that are crucial before selecting the perfect gauge for your metal roofing.

However, we did not touch upon the selection of a color for your roofing, which is undoubtedly both thrilling and challenging. It’s important to keep in mind that once you have made your choice, it’s not easy to change it as metal roofing cannot be easily repainted.

To begin with, familiarize yourself with the various colors and finishes available through color charts, which typically showcase four distinct options.

In conclusion, the gauge of a metal roof is a crucial factor to consider when deciding on the best option for your home or building. While 26 gauge may be more cost-effective initially, opting for a 24 gauge metal roof has numerous long-term benefits such as increased durability, better protection against extreme weather conditions and potential savings on maintenance and repairs. It’s important to weigh all factors before making a decision and consult with professionals for their expert opinion. Ultimately, choosing the right gauge can make all the difference in the longevity and performance of your metal roofing system.