--- title: How is DECRA Metal Roofing Made? description: Learn how DECRA roofs are made, from the original formula developed in WWII to the modern stone-coated metal roofing manufactured today. image: https://www.decra.com/hubfs/decra-metal-roofing-how-is-decra-made-manufacturing-facility.webp --- - [ Blog ](https://www.decra.com/blog) Enter your email address and zip code to find contractors in your area - [ Gallery ](https://www.decra.com/metal-roofing-gallery) Enter your email address and zip code to find contractors in your area - [ For Professionals ](https://www.decra.com/pro) Enter your email address and zip code to find contractors in your area - Find Contractor Enter your email address and zip code to find contractors in your area - [ (877) 463-3272 ](tel:8774633272) Enter your email address and zip code to find contractors in your area - [ METAL TILE ROOFING ](https://www.decra.com/metal-tile-roofing) - [ METAL SHINGLE ROOFING ](https://www.decra.com/metal-shingle-roofing) - [ METAL SHAKE ROOFING ](https://www.decra.com/metal-shake-roofing) - QUICK LINKS - [Design Your Roof](https://www.decra.com/design) - [Request Sample and Estimate](https://www.decra.com/request-sample) - [Metal Roofing Blog](https://www.decra.com/blog) - [Metal Roofing Myths](https://www.decra.com/metal-roofing-myths) * Menu * * Menu * - HOMEOWNERS - [ Request Sample and Estimate ](https://www.decra.com/request-sample) - [ See DECRA on Your Home ](https://www.decra.com/design) - [ Register Warranty ](https://www.decra.com/register-warranty) - PROFESSIONALS - [ Join Contractor Network ](https://www.decra.com/join-contractor-network) - [ Visit Knowledge Base ](https://www.decra.com/pro) - [ Ventilation Calculator ](https://www.decra.com/ventilation-calculator) - Resources - [ Blog ](https://www.decra.com/blog) - [ Gallery ](https://www.decra.com/metal-roofing-gallery) - [ Case Studies ](https://www.decra.com/case-studies) - [ Metal Roofing Myths ](https://www.decra.com/metal-roofing-myths) - [ 1230 Railroad St, Corona, CA 92882 ](https://www.google.com/maps/place/1230+Railroad+St,+Corona,+CA+92882/@33.8877827,-117.5875414,17z/data=!3m1!4b1!4m5!3m4!1s0x80dcc85b2843c881:0xde8667dc4e01a741!8m2!3d33.8877827!4d-117.5853527) - [ (877) 463-3272 ](tel:8774633272) [![Request Call](https://no-cache.hubspot.com/cta/default/5712265/09a36b95-b407-4c8b-934b-39d40abbba7b.png)](https://cta-redirect.hubspot.com/cta/redirect/5712265/09a36b95-b407-4c8b-934b-39d40abbba7b) - - - - - # How is DECRA Metal Roofing Made? - By [ Trevor Underwood ](https://www.decra.com/blog/author/trevor-underwood) - March 27, 2026 - [What is Metal Roofing](https://www.decra.com/blog/tag/what-is-metal-roofing) [Manufacturing](https://www.decra.com/blog/tag/manufacturing) ![DECRA Manufacturing Facility Exterior](https://www.decra.com/hubfs/decra-metal-roofing-how-is-decra-made-manufacturing-facility.webp) How is DECRA Metal Roofing Made? 8:28 When it comes to roofing that blends durability, longevity, and standout curb appeal, DECRA metal roofing by IKO has earned its reputation among contractors and homeowners alike. Designed to perform in virtually any climate, it’s a system built not just to protect—but to last. But what truly sets DECRA apart isn’t just how it looks or performs once installed—it’s how it’s made. Behind every DECRA roof is a carefully engineered manufacturing process that enhances its strength, weather resistance, and signature style. Understanding that process reveals why this roofing system continues to grow in popularity—and why it’s a smart investment for your next remodel. ## A Brief History of DECRA Metal Roofing  The devastating [bombing of Great Britain](https://www.iwm.org.uk/history/the-blitz-around-britain) during World War II meant the nation needed to rebuild strategic structures quickly. Corrugated metal was a common solution, but its reflectivity of German flares during night raids was a serious downside. A local bituminous emulsion manufacturer came to the rescue of the Allied Command to help solve this problem. The industrial chemists at Decraspray Co. developed a camouflage solution to coat buildings, making their exteriors less visible. This coating had two other vital qualities. First, it was waterproof, which was perfect for the British Isles' rainy climate. And second, it was highly durable, lasting throughout the war. After the war, the true durability of Decraspray’s formulation was revealed. The coating was nearly impossible to remove from the corrugated metal it was bonded to. Once it was finally removed, the underlying metal looked brand new! The pounding rain and harsh salt air had been completely repelled. That led Decrapsray to sell the formula to industrial developers and contractors. It didn’t take long for Decraspray to get the attention of [Lou Fisher](https://www.aucklandmuseum.com/war-memorial/online-cenotaph/record/C141047), a New Zealand industrialist. In 1957, he began applying the unique coating to galvanized steel roof tiles. He added crushed stone granules for the ideal combination of improved function and [curb appeal](https://www.decra.com/blog/what-color-options-are-there-for-a-new-roof). This product was originally marketed under the name [Decramastic](https://www.metrotile.eu/about-us/our-history/). Eventually, it became DECRA Metal Roofing, and it has since evolved, earning many high ratings and certifications. You can read more about DECRA’s weather and fire ratings below. Additionally, our ISO ([International Organization for Standardization](https://www.iso.org/home.html)) [certifications](https://www.decra.com/hubfs/DECRA%20Product%20Knowledge%20-%20ISO%20Certification.pdf) highlight our dedication to quality while also prioritizing workplace and environmental safety: - ISO 9001 certification for its quality management system - ISO 14001 certification for its environmental management system - ISO 45001 certification for its occupational health and safety management system When you examine the different layers and coatings of [DECRA stone-coated metal roofing](https://www.decra.com/), you’ll understand more why it is so groundbreaking as a roofing system. ## What Is DECRA Stone-Coated Metal Roofing Made Of? DECRA’s unparalleled performance comes from a carefully engineered five-step manufacturing process: - Fabrication and stamping of the high-grade steel panel blanks - Application of the base coat - Bonding of granular stone chips - Protective overglaze coat - Final curing of the finished stone-coated steel product Below, you’ll find more details about each of these layers. Everyone is important, and together they are responsible for DECRA’s [durability](https://www.decra.com/blog/the-evolution-of-metal-roofing-and-why-its-the-most-durable-roofing-material), cost effectiveness, and [curb appeal](https://www.decra.com/metal-roofing-gallery). ### Steel DECRA by IKO roofing products all start with a structural quality steel sheet as their base. Made for strength and flexibility, they have a minimum elongation capability of 22%. This helps the panels withstand the stress of installation and extreme weather conditions without cracking. It’s worth noting that DECRA meets ASTM A792/A792-10 grade 37 standards—the highest in the industry—which ensures consistent quality and long-term performance for homeowners.  ### Zinc-Aluminum Alloy Coating Next, the steel is hot-dip coated with a [protective metallic layer](https://www.decra.com/hubfs/DECRA%20Product%20Knowledge%20-%2055%20Percent%20Aluminum-Zinc%20Alloy%20Coated%20Steel.pdf) composed of aluminum, zinc and silicon. This alloy creates a bonded shield that resists corrosion far more effectively than a single metal coating could on its own. The result is exceptional anti-corrosion strength, which is especially vital in challenging climates such as [coastal](https://www.decra.com/blog/durable-and-dependable-roofing-materials-for-coastal-homes), rainy, snowy or humid environments. ### Silicon DECRA’s corrosion resistance is further enhanced with the addition of a silicon layer. This helps the metal better bond with the steel, preventing separation over the roof’s lifetime. Silicon also lends flexibility to the roofing panels, which allows for bending during installation without compromising the internal layers.  ### Acrylic Resin Coatings After alloy coating, both sides of the steel are finished with an advanced acrylic resin coating. This crucial step provides multiple benefits: - It helps panels resist fingerprints and scuff marks during handling and installation. - The formulation creates an optimal bonding surface for the final layer of mineral granules. - It provides additional protection from corrosion and UV weathering from the sun.  ### Stone-Coated Granules The final application of stone-coated granules is the bridge between DECRA’s durability and its aesthetic appeal. Natural granules of various sizes are coated with fade-resistant pigments and applied to the panels. Not only do the granules add to DECRA’s weather resistance, they also transform metal roofing into profiles with the texture and color of traditional roofing materials like [asphalt shingles](https://www.decra.com/metal-shingle-roofing), [clay tiles](https://www.decra.com/metal-tile-roofing), and [wood shakes](https://www.decra.com/metal-shake-roofing). It’s so well done that even picky [HOAs and gated communities](https://www.decra.com/blog/how-to-get-hoa-approval-for-a-metal-roof) are jumping on the DECRA wagon when it comes to matching existing roofing.  ## How the DECRA Manufacturing Process Protects Your Home The unique design of DECRA’s stone-coated roofing panels gives property owners a long list of weather benefits. It boosts their bank accounts, all without sacrificing that stunning look everyone craves. We challenge you to find all these benefits in one product anywhere else: ### Durability and Weather Resistance - Longevity - a lifetime roof that lasts for [40-70 years](https://www.statefarm.com/simple-insights/residence/metal-roof-pros-and-cons), which is 2-3 times longer than traditional roofs - Impact resistance - the highest rating against damage from hail and a damage warranty against [hailstones up to 2.5 inches](https://www.decra.com/hubfs/Website%20Files/Warranty/DECRA%20Warranty%20Final.pdf) - Wind resistance - protection from wind uplift in [hurricane-force winds](https://www.decra.com/blog/how-to-explain-the-benefits-of-decras-lifetime-limited-warranty-to-homeowners) of up to 120 miles per hour - [Wind-driven rain resistance](https://www.facebook.com/DECRAMetalRoofing/videos/1790572790965635/) - even at wind speeds of 110 miles per hour, rain won’t penetrate the roof. - Highest fire rating - [the top fire rating](https://www.decra.com/blog/what-is-the-best-roof-for-fire) from Underwriters Laboratories, as [wildfire incidents rise](https://news.ucmerced.edu/news/2025/wildfire-disasters-surged-past-10-years-study-shows) globally and nationwide - Ability to handle snow - no sagging with [heavy snowfalls](https://www.decra.com/blog/what-is-the-best-type-of-roof-for-colder-climates), plus a hollow core that discourages ice dam formation ### Cost Effectiveness - Increased home value - [raise your value by up to 6%](https://www.weekand.com/home-garden/article/metal-roofs-improve-resale-value-home-18037965.php) for building equity or property resale price - Energy efficiency - reduce cooling costs by [up to 25%](https://www.statefarm.com/simple-insights/residence/metal-roof-pros-and-cons), thanks to DECRA’s surface that deflects the sun’s heat. - [Insurance discounts](https://www.statefarm.com/insurance/home-and-property/homeowners/discounts/roofing-materials) - enjoy the potential for savings as [carriers drop customers](https://www.decra.com/_hcms/analytics/search/conversion?redirect=aHR0cHM6Ly93d3cuZGVjcmEuY29tL2Jsb2cvdGhlLXJpc2Utb2YtZHJvbmVzLWluLXJvb2YtaW5zcGVjdGlvbnM%3D&ct=SEARCH&pid=5712265&cid=181105775911&t=ZHJvbmU%3D&d=www.decra.com&c=2&c=3&c=5&c=6&rp=1&ab=false&opcid=&rs=UNKNOWN&hs-expires=1805576813&hs-version=1&hs-signature=APUk-v4hFj8d3vhPul4lYdqUDTdnjn0yug) due to roof claim risk. DECRA can be installed [during the winter months](https://www.decra.com/blog/can-you-replace-a-roof-in-the-winter), unlike asphalt shingles. And it can usually be installed [directly over shingles](https://www.decra.com/blog/can-a-metal-roof-be-installed-over-asphalt-shingles), without a teardown first. That saves you time and money. Perhaps you’re looking for a more [sustainable roofing option](https://www.decra.com/blog/what-is-sustainable-roofing). Because it’s made of metal and lasts so long, DECRA is a great choice for reducing waste. Plus, it can handle the weight of [solar panels](https://www.decra.com/blog/what-is-the-best-type-of-roof-for-solar-panels) for even more energy savings that also benefit the planet. You don’t want to forget about DECRA’s limited lifetime warranty. It gives you peace of mind and can be transferred to a new owner should you ever sell your home. ## We’ll Send You a Sample of DECRA—Just Ask! Ready to make DECRA stone-coated metal roofing your choice for your next roof remodel? Why not take a look at it up close, so you can see how durable and attractive it is? Just [request a complimentary sample](https://www.decra.com/request-sample), and we’ll send you one. To see how DECRA would look on your entire roof, [try our online visualization tool ](https://www.decra.com/design)and prepare to be amazed! [![decra-metal-roofing-web-request-sample-blog-cta](https://www.decra.com/hs-fs/hubfs/Blog%20CTA%20Visuals/decra-metal-roofing-web-request-sample-blog-cta.jpg?width=800&height=280&name=decra-metal-roofing-web-request-sample-blog-cta.jpg)](https://www.decra.com/request-sample) YOU MIGHT ALSO LIKE ![feature image](https://www.decra.com/hubfs/decra-metal-roofing-web-title-24.jpg) [Title 24: What Homeowners Should Know About Cool Roofs](https://www.decra.com/blog/title-24-what-homeowners-should-know-about-cool-roofs) July 17, 2026 ![feature image](https://www.decra.com/hubfs/decra-metal-roofing-web-rain-on-metal-roof.jpg) [Are Metal Roofs Loud in the Rain?](https://www.decra.com/blog/are-metal-roofs-loud-in-the-rain) July 10, 2026 ![feature image](https://www.decra.com/hubfs/decra-metal-roofing-web-fireworks-and-metal-roofing.jpg) [What Happens When Fireworks Hit a Metal Roof?](https://www.decra.com/blog/what-happens-when-fireworks-hit-a-metal-roof) July 2, 2026 ### Subscribe to Our Blog ![cta-image-1](https://www.decra.com/hs-fs/hubfs/cta-image-1.webp?width=767&height=767&name=cta-image-1.webp) [![Request a complimentary sample](https://no-cache.hubspot.com/cta/default/5712265/9d22d188-56ec-46a6-94a4-a438bce4f6bc.png)](https://cta-redirect.hubspot.com/cta/redirect/5712265/9d22d188-56ec-46a6-94a4-a438bce4f6bc) ABOUT DECRA Since 1957, DECRA stone-coated metal roofs have bridged the gap between industrial durability and architectural beauty. ### Post By Topics - [Homeowners](https://www.decra.com/blog/tag/homeowners) - [What is Metal Roofing](https://www.decra.com/blog/tag/what-is-metal-roofing) - [Why Metal Roofing](https://www.decra.com/blog/tag/why-metal-roofing) - [Best Roof for my Region](https://www.decra.com/blog/tag/best-roof-for-my-region) - [Contractors](https://www.decra.com/blog/tag/contractors) - [Metal Roofing](https://www.decra.com/blog/tag/metal-roofing) - [Home Remodel](https://www.decra.com/blog/tag/home-remodel) - [Roof Remodel](https://www.decra.com/blog/tag/roof-remodel) - [Hurricane](https://www.decra.com/blog/tag/hurricane) - [Damaged Roof](https://www.decra.com/blog/tag/damaged-roof) - [Hail](https://www.decra.com/blog/tag/hail) - [Storm](https://www.decra.com/blog/tag/storm) - [Tornado](https://www.decra.com/blog/tag/tornado) - [Wind](https://www.decra.com/blog/tag/wind) - [Snow](https://www.decra.com/blog/tag/snow) - [Home Builders](https://www.decra.com/blog/tag/home-builders) - [Solar Energy](https://www.decra.com/blog/tag/solar-energy) - [Rain](https://www.decra.com/blog/tag/rain) - [Project of the Year](https://www.decra.com/blog/tag/project-of-the-year) - [DECRA Contractor Network](https://www.decra.com/blog/tag/decra-contractor-network) - [Energy Efficiency](https://www.decra.com/blog/tag/energy-efficiency) - [Fire](https://www.decra.com/blog/tag/fire) - [Ice](https://www.decra.com/blog/tag/ice) - [Insurance](https://www.decra.com/blog/tag/insurance) - [Asphalt Shingles](https://www.decra.com/blog/tag/asphalt-shingles) - [Commercial](https://www.decra.com/blog/tag/commercial) - [Concrete Tile](https://www.decra.com/blog/tag/concrete-tile) - [Earthquakes](https://www.decra.com/blog/tag/earthquakes) - [Hail Damage](https://www.decra.com/blog/tag/hail-damage) - [Historic Renovation](https://www.decra.com/blog/tag/historic-renovation) - [Manufacturing](https://www.decra.com/blog/tag/manufacturing) - [Roof-Over](https://www.decra.com/blog/tag/roof-over) - [Warranty](https://www.decra.com/blog/tag/warranty) - [Show All](https://www.decra.com/blog/all) ** Back to Top Help us improve your experience. [ Send feedback ![image](https://www.decra.com/hubfs/decra-open-link.svg) ](https://www.decra.com/feedback-survey) - [Privacy Policy](https://www.decra.com/privacy) - [Contact Us](https://www.decra.com/contact-us) - [Register Warranty](https://www.decra.com/register-warranty) - [Claims*](https://www.decra.com/claims) - © 2026 DECRA Roofing Systems, Inc. - All rights reserved Cookie Settings ```json { "@context" : "https://schema.org", "@type" : "BlogPosting", "author" : { "@type" : "Person", "name" : "Trevor Underwood", "url" : "https://www.decra.com/blog/author/trevor-underwood" }, "dateModified" : "2026-03-27T18:49:54.939Z", "datePublished" : "2026-03-27T07:45:00.000Z", "headline" : "How is DECRA Metal Roofing Made?", "image" : [ "https://www.decra.com/hubfs/decra-metal-roofing-how-is-decra-made-manufacturing-facility.webp" ], "mainEntityOfPage" : { "@id" : "https://www.decra.com/blog/how-is-decra-metal-roofing-made", "@type" : "WebPage" }, "publisher" : { "@type" : "Organization", "logo" : { "@type" : "ImageObject", "url" : "https://www.decra.com/hubfs/DECRA%20Logo@2x-3.png" }, "name" : "DECRA Metal Roofing by IKO Metals" } } ``` ```json { "@context" : "https://schema.org/", "@type" : "Organization", "address" : { "@type" : "PostalAddress", "addressCountry" : "USA", "addressLocality" : "Corona", "addressRegion" : "California", "postalCode" : "92882", "streetAddress" : "1230 Railroad St.", "telephone" : "(877) 463-3272" }, "description" : "DECRA Metal Roofing is a manufacturer of Stone Coated Metal Roofing products. We have been in business since 1957 and are the inventors of Stone Coated Steel Roofing Material Category.", "founder" : { "@type" : "Person", "image" : "https://www.aucklandmuseum.com/war-memorial/online-cenotaph/record/C141047", "jobTitle" : "Founder", "name" : "L. J. Fisher", "url" : "https://www.aucklandmuseum.com/war-memorial/online-cenotaph/record/C141047" }, "foundingDate" : "1957", "foundingLocation" : { "@type" : "Place", "name" : "New Zealand" }, "image" : "https://decra.com/hubfs/decra-metal-roofing-web-villa-tile-hero-3-1.webp", "legalName" : "DECRA Roofing Systems, Inc.", "logo" : "https://decra.com/hubfs/Decra%20Logo-1.svg", "name" : "DECRA Metal Roofing", "sameAs" : [ "https://twitter.com/DECRAMetalRoof", "https://www.linkedin.com/company/decrametalroofing/", "https://www.instagram.com/decrametalroofing/", "https://www.facebook.com/DECRAMetalRoofing" ], "telephone" : "(877) 463-3272", "url" : "https://www.decra.com/" } ```