Best Metal Roofing Brands (2025 Guide) • Top 10 Companies

Introduction

In this article, I’m going to give you a list of the best American metal roofing manufacturers based on:

1. My own professional experience with metal roofing over the years
2. The companies’ reputations within the roofing industry
3. Feedback from property managers and homeowners
4. The research I’ve done to confirm it all

The focus here is on companies that manufacture steel and aluminum roof systems.

Over 90% of metal roofing is made from steel or aluminum, with steel products alone making up over 80%. Copper, zinc, and stainless steel are also used and they make excellent roofing materials, but it doesn’t make sense to include the smaller companies that specialize in those materials here. Stainless steel is a very niche roofing material. Copper roofing is commonly custom made or the panels are formed on site from copper metal roofing coil produced by a copper rolling mill company like Revere Copper. Almost all zinc roofing in America is imported from Europe, produced either by RheinZink or VMZink (both fine companies).

A Word About the Metal Roofing Industry

Pretty much anyone with a roll-forming machine can make metal roofing. China pumps this stuff out by the boatload, and it’s relatively easy to set up shop as a reseller. There are probably thousands of smaller companies across North America selling metal roofing products. Most of them don’t have full quality control over the manufacturing process themselves. They often buy painted coil stock from whoever’s cheapest, form the panels in a rented warehouse, and put their name on the final product.

The problem is, the quality of the finished product is only as good as the materials, equipment, and process behind it. Cheap coatings can fade and flake fast (I’ve seen this happen a lot). Thin panels dent easily and often develop oil-canning. Low standards during manufacturing can turn into big problems later with fastener and seam performance. And once the roof is installed, there’s no easy way to fix it, especially if the company disappears in a few years and the warranty turns out to be worthless.

It’s important to choose a brand with a good reputation for high quality products, a history of product performance that goes back farther than one roof life cyle (preferably more than 40 years), and a track record of honoring warranties. The best metal roofing manufacturers invest in testing, offer certified installer programs, and back their products with relatively long-term, non-prorated warranties. If you’re making a 50- or 60-year roofing decision, you want to be confident that the manufacturer will actually be around if something goes wrong in the future.

You may pay a little more for high-quality materials, but in the case of metal roofing, it’s absolutely worth it.

Criteria for High-Quality Metal Roofing

Not all metal roofs are created equal. Here’s how to tell if a roofing system is likely to perform the way you want:

1. Durable Panel Thickness

• What it means: Thicker sheet metal resists denting, oil canning (surface waviness), and structural movement better than thinner sheet metal.
• What to look for: Steel panels should be at least 26 gauge; 24 gauge is better. Aluminum panels should be at least .032 inches thick.

2. Premium Paint Finishes

• What it means: A high quality finish protects the roof from fading, chalking, and peeling for decades.
• What to look for: Coatings made with PVDF resin (like Kynar 500®). SMP (Silicone Modified Polyester) and other paints do not perform as well as PVDF (although they do cost significantly less).
• Coating Warranty Coverage: Top manufacturers back their finishes with long-term protection, typically a 30- to 40-year warranty against fading, chalking, and film failure (peeling off).

3. Metal Substrate Quality

• What it means: The type of metal beneath the coating determines how well the roof resists rust and corrosion over time.
• What to look for: Panels made from Galvalume®-coated steel or aluminum, both of which offer exceptional durability in harsh environments. High-quality galvanized steel may be fine. Watch out for low-quality galvanized steel; it will have reduced corrosion resistance, especially at cut edges and fastener holes.

4. Rigorous Manufacturing Standards

• What it means: High-end manufacturers follow strict production tolerances that ensure every panel performs as intended, structurally, visually, and for the long term.
• What to look for: Clean, consistent panel seams, uniform dimensions, and smooth surfaces with minimal waviness. These qualities reflect precise roll-forming, quality control, and investment in high quality equipment and maintenance.

5. Strong Warranty Coverage

• What it means: The manufacturer stands behind the product and has confidence that it will perform well for at minimum as long as they promise it will.
• What to look for: At least a 30-year finish warranty, a 20-year non-prorated period for material defects, and the ability to transfer the warranty to a new owner.

6. Installer Training or Certification

• What it means: The roof system is more likely to be installed correctly (which is critical to performance).
• What to look for: Brands that offer certified installer programs or require contractor training in order issue weathertightness warranties.

7. Verified Product Testing

• What it means: The roofing system will meet performance standards for wind, impact, fire, and weather resistance.
• What to look for: Products rated for UL 2218 Class 4 impact, ASTM E1592 uplift, and Class A fire resistance, especially for insurance rebates or certain building code compliance issues.

Metal Roofing Terms

Here’s an explanation of some of the specialized terms used in the company profiles below:

• Batten Seam Roof: A traditional metal roofing style where the panel edges are folded over strips of solid material (typically wood) which are fastened to the structural deck. Battens are typically 1.5 or 2 inches square in cross-section. Common in historic or decorative designs.
• Coping: A protective cover placed along the top of a parapet or other wall to prevent water from entering the building envelope.
• Cool Roof: A roof designed to reflect more sunlight and absorb less heat, helping reduce indoor cooling costs.
• Exposed-Fastener Panels: Metal roofing panels attached with visible screws. Common on lower-cost houses and utility buildings; typically more affordable than concealed systems.
• Fade and Chalk Resistance: Describes how well a roof’s color and surface hold up to sun exposure. “Fade” means color loss; “chalking” is a white powdery film.
• Galvalume®: A corrosion-resistant sheet steel coating made from aluminum and zinc. Widely used in metal roofing panels for its durability.
• Insulated Metal Panels (IMPs): Panels that combine metal faces with foam insulation inside, offering both structural support and thermal performance.
• Mechanically Seamed Panel: A standing seam panel type that is crimped or folded together using a tool, creating a watertight seam. Often used on low-slope metal roofs.
• Non-Prorated Warranty: A warranty period during which the warranty doesn’t reduce in value over time. If a defect occurs, the full cost of repair or replacement is covered during the stated period.
• PBR Panel: (Purlin Bearing Rib) A popular type of through-fastened metal roofing panel with a raised rib profile and an additional purlin bearing leg for added strength. Commonly used on commercial and industrial buildings where durability and cost-efficiency matter more than appearance.
• PVDF Coating (Kynar 500®): A high-performance paint finish that resists fading and chalking. Often used on premium metal roofing panels.
• R-Panel: A widely used exposed-fastener roofing panel with a repeating ribbed profile, typically installed on metal buildings, barns, and warehouses. Lacks the added support leg of a PBR panel, but remains a standard choice for utility-grade applications.
• Retrofit Roofing System: A new roof system installed over an existing roof without removing the old one. Saves on labor and disposal costs by avoiding a roof tear-off.
• Roll-Forming Machine: A machine used to shape flat coils of metal into roofing panels, often on-site for precise panel lengths and fewer seams.
• Snap-Lock Panel: A standing seam panel that clicks into place without tools. Common on homes due to faster installation and guaranteed neat appearance.
• Standing Seam Panels: Roofing panels with raised vertical seams that interlock. They hide and protect the fasteners and offer a high-end look with excellent long-term weather resistance.
• Stone-Coated Steel: Steel panels coated with a layer of ceramic-coated mineral granules that make them look like asphalt shingles, shakes, or clay tiles. Combines strength with style.
• Through-Fastened Panels: Metal panels secured with screws that go straight through the panel surface. Durable and cost-effective but they don’t look as good and may experience leaks at the fasteners over time. Another term for exposed-fastener panels.
• Weathertightness Warranty: A guarantee that a roof will not leak, typically offered when the roof is installed by a certified contractor using manufacturer-approved installation methods.

List of the Best Metal Roofing Brands

The metal roofing manufacturers listed here are presented in alphabetical order. This isn’t a ranked list. As a roof consultant, I would have no problem specifying or recommending products from any of these companies. But also, just because a company isn’t listed here it doesn’t mean I think they make bad products. See my roofing manufacturers directory for a list of other major metal roofing manufacturers.

ATAS International

• Year Founded: 1963
• Headquarters: Allentown, Pennsylvania
• Types of Metal Roofing: Standing seam panels, batten seam, metal shingles & tiles, corrugated panels
• Contractor Certification Program: Yes (offers installer training and certification)
• Non-Prorated Warranty Period: 20 years (material defects), 30 years (finish)
• Website: ATAS International

ATAS International is a family-owned manufacturer that has grown from a small siding business into an industry leader in metal roofing and wall systems. They offer a large selection of products in aluminum, steel, zinc, copper, and stainless steel. Standard profiles from ATAS include numerous standing seam roof panel systems (including curved and tapered panels), traditional batten seam roofs, as well as distinctive metal shingles, shakes, and tiles for both commercial and residential applications. This breadth of product lines allows ATAS to satisfy almost any architectural style and performance requirements.

Despite its growth, ATAS has maintained a focus on quality and customer service. The family that started the company is still involved in running it. They emphasize innovation (such as sustainable “cool roofing” and solar-ready panels) and ISO-certified manufacturing for consistent quality. ATAS supports its products with robust warranties (up to 30-year finish coverage) and offers training programs to certify roofing contractors in proper installation techniques. This commitment to excellence has earned ATAS a strong reputation in the metal roofing industry, and they continue to expand with new acquisitions (such as Metalwërks Architectural Plate Systems in 2025) and facilities across the U.S.

Centria (now a Nucor subsidiary)

• Year Founded: 1906 (as H.H. Robertson, predecessor to Centria)
• Headquarters: Moon Township (Pittsburgh), Pennsylvania
• Types of Metal Roofing: Insulated metal roof panels, standing seam roof systems, exposed-fastener panels, architectural facades
• Contractor Certification Program: Yes (training and certified installer network for panels)
• Non-Prorated Warranty Period: 20–25 years (weathertightness and material, project-specific)
• Website: Centria

Centria is a world leader in architectural metal wall and roof systems, with roots tracing back over a century. Originally known as H.H. Robertson starting in 1906, the company helped pioneer modern metal building panels. Today’s Centria (formed in the 1990s through mergers) is renowned for its high-performance insulated metal panels (IMPs) that provide superior thermal and moisture control for commercial buildings. Centria’s flagship Formawall® insulated wall panels and Versapanel® insulated roof panels exemplify the brand’s focus on engineering innovation. In addition to insulated composite panels, Centria manufactures a wide range of standing seam metal roof systems, structural roof panels, and both concealed- and exposed-fastener panels for walls and roofs.

Known for servicing the architectural and industrial market, Centria is often specified on high-profile projects like airports, stadiums, and skyscrapers. The company combines extensive engineering expertise with in-house coating technologies. Centria offers proprietary high-end coatings and ultra-modern low-gloss finishes that come with lengthy warranties for color and film integrity. Centria’s nationwide network (now part of Nucor’s family of companies) includes multiple manufacturing sites and technical support teams, ensuring reliable supply and service. With a heritage of over 100 years, Centria remains at the forefront of metal building product innovation, continually launching new panel profiles and integrated solutions for the building envelope.

Classic Metal Roofing Systems (an Isaiah Industries brand)

• Year Founded: 1980
• Headquarters: Piqua, Ohio
• Types of Metal Roofing: Premium aluminum shingles and shake tiles, standing seam panels (residential), metal slate and tile profiles
• Contractor Certification Program: Yes (exclusive dealer network and installer training)
• Non-Prorated Warranty Period: Lifetime limited warranty (non-prorated) including 30-year finish warranty
• Website: Classic Metal Roofing Systems

Classic Metal Roofing Systems specializes in high-end residential metal roofing products, particularly lightweight aluminum shingles that emulate the look of traditional materials. As a division of Isaiah Industries, Classic has been in business since 1980 and has become a go-to source for homeowners seeking long-term performance. The company’s product lines include architectural aluminum shake and shingle profiles (for example, Country Manor Shake, Rustic Shingle, and Oxford Shingle) that provide the appearance of wood shakes or slate shingles while delivering the superior durability of metal. Classic’s aluminum roofing is known for being very lightweight, corrosion-resistant, and coated with advanced PVDF (Kynar) finishes for color longevity. They also offer residential standing seam panels.

Classic Metal Roofing Systems has an industry-leading manufacturer’s material warranty coverage. Homeowners receive a Lifetime Limited Warranty that remains non-prorated for the whole warranty period (not including the finish). But they also provide a very good finish performance warranty (typically a 30-40 year fade and chalk resistance guarantee). The warranty is transferable to subsequent owners, which can enhance the home’s resale value. Classic operates through a network of authorized dealers and qualified contractors across the country. The company emphasizes customer education (providing detailed resources on metal roofing) and maintains a reputation for high-quality roofing.

DECRA Roofing Systems

• Year Founded: 1957
• Headquarters: Corona, California
• Types of Metal Roofing: Stone-coated steel roofing products – including shingle, shake, and tile profiles (e.g. DECRA Shingle XD®, DECRA Shake®, DECRA Villa Tile®)
• Contractor Certification Program: Yes (DECRA Certified Installer network and training)
• Non-Prorated Warranty Period: 20 years non-prorated (Lifetime Limited Warranty up to 50 years total, transferable)
• Website: DECRA Metal Roofing

DECRA Roofing Systems is the original innovator of stone-coated metal roofing and remains the leading manufacturer in this niche. Founded in 1957, DECRA introduced a process of coating galvanized steel panels with stone granules, creating products that mimic the look of traditional shingles, shakes, and tiles while offering the strength of steel. DECRA’s product lineup covers a range of styles: for example, DECRA Shingle XD provides the appearance of thick asphalt shingles, DECRA Shake replicates hand-split cedar shakes, and DECRA Tile and Villa Tile resemble Mediterranean clay or concrete tiles. These profiles come in many colors and textures, providing homeowners with architectural style choices not typically available in metal roofing.

Performance is a major selling point of DECRA roofs. The stone-coated steel panels are exceptionally durable. They are rated for high wind speeds (120+ mph) and severe hail impact. Thanks to corrosion-resistant coatings and UV-stable stone granules, DECRA roofs carry a Lifetime Limited Warranty, which for residential applications translates to 50-year coverage (prorated after the first 20 years) and is transferable to a new owner. The warranty provides 20 years of full non-prorated coverage for material defects for the original owner, reflecting the company’s confidence in its products. DECRA works closely with a network of trained and certified installers; the company offers contractor training programs to ensure proper installation techniques for its direct-to-deck or batten-mounted systems. Overall, DECRA is often recommended for homeowners seeking the aesthetics of traditional roofs with the extreme durability and low-maintenance benefits of metal.

EDCO Products

• Year Founded: 1946
• Headquarters: Hopkins, Minnesota
• Types of Metal Roofing: Steel shingles and shakes (textured shake & slate profiles), steel standing seam panels (for residential/commercial), metal siding and soffit systems
• Contractor Certification Program: Yes (installer training courses and “Find a Contractor” locator)
• Non-Prorated Warranty Period: Lifetime non-prorated limited warranty (covers materials and labor, with 40-year paint fade protection)
• Website: EDCO Products

EDCO Products is a 75+ year-old family-owned manufacturer that produces high-quality metal roofing and siding, with a strong emphasis on residential steel shingles. Based in Minnesota since 1946, EDCO originally made siding and expanded into metal roofing in the early 2000s with its ArrowLine® shake and slate shingles. EDCO’s roofing products are designed to emulate the natural look of wood shakes or asphalt slate shingles, but they are made from heavy-gauge galvanized steel with multilayer PVDF (Kynar) finishes. Homeowners often choose EDCO’s Infiniti® and ArrowLine series shingles for their attractive textures (some feature an embossed cedar-grain or slate surface) and exceptional longevity. EDCO also offers coordinated steel soffit, fascia, and siding panels, allowing for a complete solution for the building’s exterior. EDCO also manufactures standing seam systems, but the company is best known for its unique metal shake/shingle systems.

EDCO provides an attractive warranty. EDCO has a Lifetime Non-Prorated limited warranty on its roofing products that covers both materials and labor for the original owner. This means if there is a failure in the product (e.g. due to manufacturing defect or excessive fade) the homeowner incurs no cost for replacement material or installation labor – a rare level of coverage in the industry. The warranty is also transferable to one subsequent owner (remaining non-prorated for a set period), which speaks to EDCO’s confidence that their roofs will last and perform well. EDCO uses premium fade-resistant finishes (with a 40-year fade and chalk warranty on its PVDF coatings). Contractors can attend EDCO’s installation training classes, and the company’s website offers a contractor locator to connect customers with experienced installers.

Englert Inc. (now a Great Day Improvements company)

• Year Founded: 1966
• Headquarters: East Brunswick, New Jersey
• Types of Metal Roofing: Standing seam metal roofing (architectural and structural panels), on-site roll-forming systems, metal wall panels, seamless gutters and roof drainage systems
• Contractor Certification Program: Yes (extensive training, “authorized contractor” programs for installers)
• Non-Prorated Warranty Period: 40-year finish warranty (paint film integrity); up to 20-year weathertightness warranties available
• Website: Englert Inc.

Englert Inc. is a well-known American manufacturer of metal roofing and gutter systems, well-regarded for their standing seam metal roofs. Since 1966, Englert has built its reputation on high-quality products and high-quality on-site panel fabrication. The company supplies a wide range of standing seam metal roofing profiles used in both commercial and residential projects – from classic double-lock standing seams for low-slope commercial roofs to snap-lock architectural panels. Englert is somewhat unique in that it provides portable roll-forming machines that allow contractors to fabricate long, seamless roof panels directly at the job site, ensuring a custom fit and reducing waste. This approach has made Englert a favorite for contractors who install metal roofs on complex or large buildings, as it reduces panel length limitations (and so reduces the number of laps). In addition to roofing, Englert manufactures metal wall panels and is a leading producer of seamless gutter systems.

Englert stands behind its roofing materials with good warranties. The company uses high-performance ULTRA-Cool™ low-gloss Kynar coatings on its panels, and in 2022 Englert announced an increase of its standard finish warranty from 35 years to 40 years against adhesion failure (chipping, cracking, peeling of the paint). Englert’s standing seam systems can also qualify for weathertightness warranties (up to 20 years) when installed by certified contractors. To support quality installations, Englert offers installer training and certification, and it maintains a network of factory-authorized contractors. Over more than 50 years, Englert has remained at the forefront of metal roofing innovation – from pioneering on-site panel fabrication to offering integrated solar metal roofs – all while upholding a commitment to customer service and technical support. Englert was acquired by Great Day Improvements in 2024.

MBCI (a Cornerstone Building Brands company)

• Year Founded: 1976
• Headquarters: Houston, Texas
• Types of Metal Roofing: Metal building roof panels (through-fastened panels like PBR), standing seam roof systems, retrofit roofing panels, insulated roof panels, as well as metal wall panels and secondary structural components
• Contractor Certification Program: Yes (MBCI offers a Certified Installer program through its Metal Institute)
• Non-Prorated Warranty Period: 40-year paint finish warranty on panels; up to 20-year weathertightness warranties on certified installations
• Website: MBCI

MBCI (Metal Building Components Inc.) is an industry-leading manufacturer of metal roofing and wall products, particularly for commercial, industrial, and agricultural building applications. Founded in 1976, MBCI grew to become one of the largest suppliers of metal building panels in the United States. The company operates multiple manufacturing facilities and service centers across the country, ensuring quick delivery and regional product availability. MBCI’s product catalog is vast – boasting over 90 different panel profiles for roofs and walls. This includes everything from through-fastened metal roof panels (such as the ubiquitous PBR and R-panel profiles used on warehouses and barns) to architectural standing seam roofing systems suitable for high-end commercial projects. MBCI also provides specialized products like retrofit roof panels (for installing new metal roofs over old roofs), insulated metal panels (through its association with Metl-Span and others), and a full range of the trim, flashing, and secondary structural components that accompany metal buildings.

As a part of the larger Cornerstone Building Brands family, MBCI upholds high quality standards and offers strong warranty support. Most MBCI paint-coated panels come with relatively long finish warranties – often 40 years for film integrity and 30 years for color fastness under the Signature® 300 (Kynar) coating line. The company also provides galvalume substrate warranties (typically 25 years against perforation) for its unpainted Galvalume roof panels. MBCI also offers weathertightness warranties up to 20 years; these warranties are qualified through a thorough inspection and certified installer program to ensure the roof is installed to MBCI’s specifications. MBCI’s Metal Institute provides training and resources, including a Contractor Certified Installer program, to maintain a high level of installer expertise.

McElroy Metal

• Year Founded: 1963
• Headquarters: Bossier City, Louisiana
• Types of Metal Roofing: Standing seam roofing (multiple profiles for residential and commercial), through-fastened panels (corrugated, R-panel, etc.), metal shingles/shakes (e.g. Milan® steel shingles), metal siding and soffit panels, and retrofit roofing systems
• Contractor Certification Program: Yes (offers installer certification, “McElroy University” training, and a nationwide contractor/distributor network)
• Non-Prorated Warranty Period: 35–40 year paint finish warranty (standard PVDF coatings); up to 20-year weathertightness warranties on specific systems
• Website: McElroy Metal

McElroy Metal is a prominent family-owned metal roofing manufacturer that has grown from humble beginnings into a national company with a strong presence in both the residential and commercial markets. Founded in 1963 by Thomas McElroy in Louisiana, the company is now in its third generation of McElroy leadership and has transitioned to an employee-owned (ESOP) business model. McElroy Metal operates 14 manufacturing plants and dozens of service centers and Metal Mart retail outlets across the U.S., giving it one of the industry’s most extensive footprints. This enables fast service and local availability of products.

McElroy Metal offers a wide range of metal roofing products, including structural standing seam systems for low-slope commercial applications, architectural snap-lock seams for residential and light commercial use, and exposed-fastener panels like U-panels and R-panels commonly used on agricultural and industrial buildings. Their product line also includes the Milan® metal shingle, designed to replicate the look of shake or slate, as well as solar-ready roofing systems and retrofit solutions for installing sloped metal roofs over aging flat roofs. McElroy supplies coordinated components such as wall panels, soffit panels, and fascia. Their standard coatings are PVDF finishes backed by paint warranties of 35 years or more, and they offer weathertightness warranties on commercial projects installed by approved contractors. The company provides installer certification and contractor training through its “McElroy University” program. With over 60 years in operation, McElroy supports its products with comprehensive warranty coverage, contractor education, and a broad network of distribution.

Nucor Building Systems

• Year Founded: 1940
• Headquarters: Charlotte, North Carolina
• Types of Metal Roofing: Pre-engineered metal building systems (rigid frame buildings with metal roofing), standing seam roof panels and retrofit roof systems (via Nucor Building Systems), insulated metal panels (roof & wall), steel roof decking, and other steel construction products
• Contractor Certification Program: Yes (Authorized Nucor Builder network and Contractor Installation Certification Program)
• Non-Prorated Warranty Period: 25-year roof material warranties (Galvalume), 35-40 year paint finish warranties (depending on panel finish), and up to 20-year weathertightness warranties on certified installations
• Website: Nucor Building Systems

Nucor Corporation is the largest steel producer in the United States, and through its divisions it is also a major manufacturer of metal building products and roofing systems. While Nucor’s core business is steelmaking (producing beams, sheets, rebar, etc.), it entered the metal buildings industry in the 1980s and now operates Nucor Building Systems (NBS) and related groups that fabricate pre-engineered steel buildings. Nucor Building Systems has multiple plants across the country and over 3,000 Authorized Builders in its network. These authorized contractors design and erect Nucor’s custom-engineered buildings, which typically include secondary framing and a metal roofing system as part of the package. Nucor’s building packages commonly use standing seam metal roof panels or long-span through-fastened panels (like Nucor’s CFR or Classic Roof panel) that are designed for low slopes and large spans – ideal for warehouses, manufacturing plants, churches, and other large structures.

In addition to conventional building panels, Nucor (through acquisitions and partnerships) offers insulated metal roof panels and a variety of architecturally-focused products. For example, Nucor acquired companies like Metl-Span and CENTRIA’s insulated panel business, which means it can supply IMP roofing and wall systems for energy-efficient buildings. Nucor’s portfolio also includes steel roof deck (for commercial flat roof structures), joists, and metal truss systems – making it a one-stop steel solution for builders. Because Nucor is vertically integrated (from producing the coil steel to manufacturing the finished panels), it maintains strict quality control and typically provides strong warranty assurances. Galvalume metal roofs from Nucor carry up to a 25-year warranty against perforation, and painted panels come with long-term paint finish warranties (often 35 or 40 years for fade/chalk on standard PVDF finishes). NBS also offers weathertightness warranties on its roofing systems when installed by its Authorized Builders, giving owners confidence in the roof’s leak-free performance.

Nucor’s approach to the market is through partnership with independent contractors: Authorized Nucor Builders get technical support, engineering services, and custom building design software from Nucor. Nucor also runs a Contractor Installation Certification Program (CICP) to train and certify erectors in proper installation of its standing seam roofs and other components. As a massive corporation with vast resources, Nucor brings financial strength and R&D capabilities to the metal roofing industry – evidenced by innovations like higher-strength roofing panels and advanced roof coating technologies. For customers, Nucor’s involvement means access to high-quality steel roofing materials backed by one of the most stable companies in the sector, with the convenience of a nationwide builder network for installation.

Petersen Aluminum / PAC-CLAD (now a Carlisle subsidiary)

• Year Founded: 1965
• Headquarters: Elk Grove Village, Illinois
• Types of Metal Roofing: Architectural metal roof panels (Snap-Clad®, Tite-Loc® standing seams), metal wall panels (flush panels, corrugated, etc.), aluminum and steel flat sheets & coils (PAC-CLAD finishes), perimeter roof edge systems (coping, fascia, gutters), and soffit panels
• Contractor Certification Program: No formal installer certification (products are sold through distributors and installed by qualified roofing contractors; technical support and training available)
• Non-Prorated Warranty Period: 30-year finish warranty on PAC-CLAD coatings; project-specific weathertightness warranties available for certified installations
• Website: PAC-CLAD (Petersen Aluminum)

Petersen Aluminum Corporation, known by its trade name PAC-CLAD®, is a premier manufacturer of both aluminum and steel architectural metal roofing and cladding materials. Since its founding in 1965 by Maurice Petersen, the company has become a leader in supplying architects and contractors with high-quality painted metal for building exteriors. PAC-CLAD is well-known for its extensive range of colors and finishes: it offers dozens of standard hues (including vibrant metallics and matte finishes) in a long-lasting Kynar 500 (PVDF) coating that carries a 30-year warranty. Architects often specify PAC-CLAD products when design aesthetics and finish performance are top priorities.

On the roofing side, Petersen’s flagship products include the Snap-Clad® standing seam panel – a versatile architectural panel used on many commercial and residential roofs – and the Tite-Loc® and Tite-Loc Plus® panels, which are mechanically seamed standing seams suited for low-slope applications. PAC-CLAD also produces various exposed-fastener panels (like PAC-Corrugated and Rib Panels), flush/reveal wall panels, and even specialty stamped profiles such as the PAC-CLAD Precision Series® panels that can mimic shingles or tiles. In addition, Petersen is a major supplier of flat sheet and coil stock in PAC-CLAD finishes, which sheet metal contractors use to fabricate custom flashings and trim that perfectly match the roof panels. PAC-CLAD also produces various lines of perimeter edge metal – such as coping, fascia, and gutter systems – often used on commercial low-slope roofs regardless of the primary roofing material.

Petersen Aluminum was acquired by Carlisle Companies in 2019, joining a family of building product manufacturers while still operating under the PAC-CLAD brand. This corporate backing has further solidified its market presence. The company operates multiple manufacturing sites (Illinois, Georgia, Texas, Maryland, Arizona, Minnesota), allowing it to serve projects nationwide with relatively short lead times. While PAC-CLAD doesn’t require contractors to be formally certified to purchase its products, it does offer technical support, training resources, and has a technical rep network to ensure proper installation practices. Many experienced roofing contractors are very familiar with PAC-CLAD materials, as they are commonly used on schools, hospitals, offices, and high-end residential projects where longevity and appearance are a key concern. With its combination of top-tier finishes, product diversity, and a half-century track record, PAC-CLAD remains a top choice among the best metal roofing brands for architectural applications.