THE LEADING SUPPLIER OF WALLS AND ROOFING FOR
Post Frame & Agricultural Construction
Providing both appealing aesthetics and unparalleled durability, metal has long served as the preferred roofing and siding material for architects and commercial property owners. The low maintenance requirements, 60-year life expectancy, 10-20% energy savings, affordability, performance, and versatility make metal panels ideal for any commercial project.
Durability
Life Expectancy
Quick Installation
Adds Curb Appeal
Design Flexibility
The Quickest and Most Economical Way to Erect a Building
Post frame construction consists of pressure-treated solid wood posts or laminated columns and framing that create a building’s structure. While a wide variety of building materials can be used for walls and roofs, steel roofing and siding panels are the most common cladding for post frame buildings.
Post frame buildings are widely recognized as being economical and easy to erect. However, these aren’t the only advantages of post frame construction. Today’s post frame buildings offer superior aesthetics, durability, and long service life. Thanks to the design flexibility of post frame construction, their uses range from simple backyard storage units to high-end commercial structures.

Your Coating Choice Matters!
You’ll find two popular paint systems for metal roof and wall panels: Kynar 500® and Silicone Modified Polyester. The price point between the two on a residential project can be minimal, especially when considering the improved performance of the Kynar 500 system against fade and chalk.
Let’s look at a real-life example to showcase the difference. Both PVDF (Kynar 500) and Silicone-Modified Polyester (SMP) panels were installed on a home in Louisiana. On day one, the colors were an identical shade of green.
The accompanying photo, taken only eight years later, tells a powerful story of the differences between the paint systems as it highlights both the chalk and fade of the SMP paint system. Note that there is no visible fade or chalking on the darker (PVDF) panels.
Samples & Color Charts
Request physical samples and color charts. All items will be sent out via UPS ground unless otherwise specified.


Substrates Matter Too!
Underneath the paint/coating, the substrate of the actual metal is the heart of a metal roof panel.
You'll find two common substrates for metal panels: Galvanized and Galvalume®. Galvanized substrates feature a zinc coating applied to the raw steel, while Galvalume substrates feature an alloy of zinc plus aluminum.
Galvalume substrates offer homeowners the highest quality long-term solution.
Our recommendation is based on decades of research and actual field performance. Galvalume delivers better results, excellent corrosion resistance, and long-term aesthetics. Galvalume substrates also carry a warranty from Steel Mills against rupture or perforation due to corrosion. Similar Steel Mill warranties for Galvanized substrates simply don’t exist. Want to know more about substrates? Contact Us, we're happy to help!
Ways We’re Different
We’re working hard to earn your business so multiple paint systems and substrate offerings aren’t the only things we do differently at McElroy Metal.
Check out the three additional options below that we offer specifically for our Post-Frame customers.

Thermoforming for the Win!
Thermoforming (or warm forming) is just another example of our commitment to customer satisfaction and constant improvement.
Traditionally steel panels have been manufactured from steel at room temperature. While that process worked for decades, new advances have proven that warming the steel prior to production can result in a better product with a longer life expectancy for Silicone Modified Polyester (SMP) paint systems.

Edge Rust Inhibitor
The cut ends of metal panels expose raw steel to Mother Nature’s elements, also resulting with the appearance of red rust. McElroy Metal provides factory applied edge coating to our Max-Rib and Mesa panels at our Post Frame manufacturing facilities*.
McElroy Metal’s edge coating processes applies a clear coat rust inhibitor at panel ends which helps to minimize corrosion.
*Marshall, MI; Mauston, WI; Lewisport, KY and Winchester, VA

Factory Applied Anti Condensation Fabric
Max-Rib roof panels with McElroy's MoistureLok, offer a great option to address condensation challenges. The design of our MoistureLok product traps moisture and then releases it back into the air as natural humidity once conditions go back below the dew point.

Choosing the Right Partner
Once you’ve decided on a post-frame building, it’s time to choose the right partners to make your dreams come true!
First, you want to select a reputable contractor who installs only high-quality building materials. If you’re exploring options, check out our Find-A-Contractor tool, which allows you to search for builders near you.
While selecting a great contractor is critical to your project’s success, it’s equally important to select a tier-one manufacturer for your metal roof and wall panels. While you might have a local manufacturer closer to you, there are tradeoffs for working with a regional manufacturer instead of a national one, like McElroy Metal.
Benefits of Metal Roofing and Partnering with McElroy Metal
Asphalt shingles have long dominated the residential roofing market; however, the never-ending saga of shingle replacement is simply wearing many homeowners out. In contrast, metal roofing out-performs shingles and offers many other benefits which is the reason more and more homeowners are ditching conventional shingles and installing metal roofing.
Benefits of Metal Roofing and Partnering with McElroy Metal
Asphalt shingles have long dominated the residential roofing market; however, the never-ending saga of shingle replacement is simply wearing many homeowners out. In contrast, metal roofing out-performs shingles and offers many other benefits which is the reason more and more homeowners are ditching conventional shingles and installing metal roofing.
Helpful Videos
Available Roofing Styles




138T/238T
With an opportunity to choose from three distinct Maxima profiles: Maxima, Maxima 1.5 and Maxima ADV, McElroy’s Maxima family of products represents the industry’s broadest selection of vertical leg standing seam systems…

Instaloc Snap Lock
Instaloc is a snap-together standing seam system that features a 1” seam and is installed with concealed clips. Instaloc is designed to be used with solid decking and the low profile seam makes the panel an excellent option…

Masterlok 90/Masterlok fs
MasterLok-90 (also referred to as ML-90) is a snap together trapezoidal standing seam system and MasterLok-FS is a mechanically seamed trapezoidal system. Both are designed for projects with slopes as low as 1/4:12…

138T/238T
With an opportunity to choose from three distinct Maxima profiles: Maxima, Maxima 1.5 and Maxima ADV, McElroy’s Maxima family of products represents the industry’s broadest selection of vertical leg standing seam systems…

Masterlok 90/Masterlok fs
MasterLok-90 (also referred to as ML-90) is a snap together trapezoidal standing seam system and MasterLok-FS is a mechanically seamed trapezoidal system. Both are designed for projects with slopes as low as 1/4:12…

Instaloc Snap Lock
Instaloc is a snap-together standing seam system that features a 1” seam and is installed with concealed clips. Instaloc is designed to be used with solid decking and the low profile seam makes the panel an excellent option…
Residential Resources

The Designer’s Guide to Retrofit Framing Systems
Discover everything you need to know about our retrofit framing systems.

Tired of Replacing Your Shingle Roof?
Learn how out metal-over-shingle recover system offers a long-term solution with cost-saving...

Tired of Replacing Your Shingle Roof?
Learn how out metal-over-shingle recover system offers a long-term solution with cost-saving...
Commercial Metal Roofing and Wall Panels FAQ
Unlike asphalt shingles, which need to be replaced every 12-20 years, metal roofing can last up to 60 years with very little need for maintenance. For many homeowners, a metal roof is a true “one and done” solution they won’t have to worry about replacing in the future.
Learn MoreThanks to a combination of ASV (Above Sheathing Ventilation) and special coating designed to reflect the sun’s energy and release absorbed heat, metal roof panels can reduce energy costs by as much as 20% compared to asphalt shingles.
Learn MoreMetal roofing actually reflects much of the sun’s heat and energy. While conventional shingles absorb much of the sun’s heat, metal roofing can actually reduce cooling energy costs by as much as 20%. That’s because the coating used on modern metal roof panels incorporates special pigments that reflect the sun’s energy and release heat that is absorbed throughout the day.
The odds of a lightning strike hitting a metal roof are the same as any other roof, regardless of material. In the event that there is a lightning strike, however, metal roofing will not ignite and catch fire since it is not combustible.
Read MoreFar from it. Studies conducted by the Insurance Institute for Business & Home Safety (IBHS) have found that metal roofing is far less likely to be punctured by hail than conventional asphalt shingles, withstanding even golf ball-sized hailstones with only cosmetic damage.
Metal roofing consistently outperforms shingles when it comes to resisting harsh elements. In addition to being fire and hail resistant, metal roofs are also effective against extreme winds. Many insurance companies recognize the durability of metal roofing, offering discounts for structures with metal roofs.
A class 4 roof is an impact-resistant roof and will perform will when exposed to hail.
Learn MoreGet our best tips and tricks for how to measure a roof for metal roofing.
Learn MoreMetal roofing is an energy efficient, environmentally friendly roofing material that offers cost savings and a long lifespan.
Learn MoreIt is safe to walk on a metal roof. Get answers to the most common questions about how to walk on metal roof tiles.
Learn MoreGet the metal roofing pros and cons homeowners need to know to make an informed roofing decision.
Learn MoreMetal roof systems offer homeowners in hail prone areas a long lasting, durable roofing solution.
Learn MoreWhile it is impossible to call any roof hurricane proof, a properly designed metal roofing system can be capable of handling wind speeds in excess of what is normally experienced in hurricane-prone regions.
Learn MoreYes! Get four reasons why they are.
Learn MoreAsphalt saturated, roofing-tar paper, or synthetic?
Learn MoreYes! Solar panels and metal roofing are a great match!
Learn MoreOil canning is something you see when a metal panel appears wavy or distorted.
Learn MoreYes! Installing metal roofing over existing shingles is often an excellent way for building owners to not only get a long-lasting, high-performance roof but also to save on roof tear-off expenses. However, sometimes tearing off the existing roof is a necessary step. Please click the link below for more information.
Learn MoreInstalling a new metal roof on your home is a big project for most homeowners. The expense and expectations for a new metal roof underscore the importance of finding a trusted roofing contractor to ensure proper installation. We've written an article to help.
Read MoreKnowing the signs that it’s time for a new roof and available options helps you make an informed decision when the time comes.
Green Buildings and Solar Metal Roofing
Simply put, Green Building makes sense from both an environmental and economic standpoint. While reducing our carbon footprint has a societal benefit, individuals, companies and other entities benefit greatly, due to lower energy consumption and expense.






