Bare Galvalume and coated Galvalume panels will very rapidly deteriorate when exposed to the corrosive agents of animal confinement. Neither Galvalume or galvanized substrate is warranted to be used, in or around animal confinement or agriculture. Galvalume refers to a type of proprietary steel coating that consists of about 55% aluminum, 43.4% zinc and 1.6% silicon. To reduce the possibility of oil canning, use the preventative methods outlined in this article. Comes at a similar price point to Galvalume. Plus, once the red rust starts on a galvanized roof or wall, it will continue to red rust rather quickly. Design the Best Standing Seam Metal Roof for Your Projects in Asia, Make Sure the Coil and Roll Former are Western Made. 1565 Views. Difference between aluminum and galvanized steel is obtained by comparing the properties of both. Due to this composition, it is highly effective in protecting other base metals from corrosion and the elements. Cons – Because Galvalume’s coating is more than half aluminum, it is not as strong as galvanized steel and may be more susceptible to denting. Galvalume was first manufactured in 1975 and has been thoroughly tested in many types of environments. Galvalume steel sheet can be welded similar to other zinc coated sheet products. Though once any part of the steel core is exposed, the metal will start to red rust, which is both unsightly and will eat away at the metal over time. We also use third-party cookies that help us analyze and understand how you use this website. Often offered with paint, substrate, and weathertight warranty options and has self-healing properties. It is softer than polyester, making it highly formable without risk of cracking. Galvalume systems also often come with paint and substrate warranties that protect your investment and provide peace of mind that the roof or wall system will last. Galvanized uses zinc only. This website uses cookies to improve your experience while you navigate through the website. Rust can still form on the edges, but once the rust makes contact with the aluminum it will stop. Galvanized steel is a type of ornamental fencing known for its strength. Galvalume. Galvanization (or commonly referred to as galvanized) is a protective zinc coating that is applied to a steel or iron substrate through a hot-dip galvanizing process. Major applications are for metal building components, including roofs, side sheets, and structural members. The one exception is when the coating is penetrated – scratched or chipped by falling or blowing debris, for example. However, aluminum resists it slightly better than galvanized steel. If you see there is a dramatic difference in the price of two painted Galvalume panels you are specifying, then the less expensive, less effective  kind of  coating should be suspected. Galvalume is offered in both bare and pre-coated versions. I think it pulls so much nicer with this slant V front. One roofing material that stands above the rest for high quality, longevity and durability is galvalume. In essence, we believe it’s important that you know the different attributes of these two materials so you can make the best choice for your project. Bare Galvalume and painted Galvalume sheets suffer rapid corrosion when in contact with mortar and concrete. It is a gutter constructed of a steel substrate and coated in mix of 55% aluminum and 45% zinc. If you have any other questions about Galvalume, contact an Englert architectural sales representative near you. The aluminum in Galvalume metal helps to better protect the panels against corrosion in certain environments compared to Galvanized. But opting out of some of these cookies may have an effect on your browsing experience. Even though Galvalume and galvanized are generally similar in the way they’re created, they have different characteristics that affect how each one should be used in metal roof and wall projects. Like galvanized products, Galvalume is susceptible to oil canning. Oil canning – Oil canning is an inherent characteristic of light-gauge, cold-formed metal products, especially products with broad flat areas. It is a kind of fluoride, a family that includes such well known products as Teflon and Halar. Galvalume may also be referred to as AZ-50 for painted and AZ-55 for unpainted sheet/coil, which refers to the coating weight. It comes up so often, we thought we’d take a few minutes and use this week’s blog to explain those differences. Depending upon the thickness, color, and quality of the desired Galvalume panels, pricing ranges anywhere from $5.00 to $15.00 per square foot. Compare Galvanized Steel vs Aluminum Fencing Costs Galvanized Steel Fence Overview . Average Rating: (based on 1 review) Showing 1 Review: by Brad on 1/22/2013: Pulls so nice! Necessary cookies are absolutely essential for the website to function properly. Most commonly Galvalume is … Manufacturers fight rust by coating the roofing panels with either zinc or Galvalume, an alloy of aluminum and zinc, to form a protective barrier. In general, the 55% aluminum-zinc coating is soft and less conductive when compared with uncoated steel and therefore Slant V-Nose with Aluminum Tread Plate (ATP), Anodized Metal, Roofing Galvalume, or Same Colored Metal as Trailer. Galvalume is a high-performing metal option for high-temperature, high-precipitation and marine environments. Most Galvalume®–like galvanized steel– is coated. Galvalume is offered in both bare and pre-coated versions. Typical G90 galvanized metal roofing can cost anywhere from $5.00 to $13.00 per square foot and can fluctuate further based on thickness, color, installation costs, location, and more. There are two types of metallic coatings used: galvanized, which uses 100% Zinc in various thicknesses depending upon the product usage, and Galvalume, a mixture of aluminum and zinc. Average industry cost by material: Manufacturers begin with a carbon steel base sheet that is then continuously hot-dipped with aluminum and zinc alloys until it reaches a coating consisting of 55% aluminum, 43.4% zinc, and 1.6% silicone. These metallic coatings “sacrifice” themselves to protect the iron in steel … When zinc is combined with aluminum to form galvalume, it’s even more protective. However, the benefits and drawbacks of Galvalume and galvanized metal significantly differ, including how long each one lasts, the expectations of how each one will perform, and more. The coating on Galvalume tends to be thinner than the coating used in galvanizing. Durability: Aluminum will not rust or corrode for a very long time, even if you’re right on the coast. Aluminum is a metal, and it has all the attributes of metal – that are: It is ductile, corrosion resistant, flexible and a good thermal conductor. Oil canning is only an aesthetic concern that does not affect the strength or performance of the system. And Galvalume offers exceptional heat reflectivity, resulting in lower energy load on buildings and improved interior comfort. Galvalume® is a material constructed of steel coated with 55% aluminum and 45% zinc during a continuous hot dipping process. No substrate warranties – Arguably the most significant disadvantage to galvanized metal systems is the fact that the substrate doesn’t have a warranty. This coating acts as an excellent protection against corrosion. Economical – For the most part, Galvalume is reasonably priced and one of the most affordable metal materials available for roofing products. Like galvanized products, Galvalume is susceptible to oil … Galvalume has a cousin, Galvalume Plus. Out of these cookies, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. However, aluminum also has its downsides, mostly from our point of view as the roofers. Comes at a similar price point to Galvalume. Manufacturers begin with a carbon steel base sheet that is then continuously hot-dipped with aluminum and zinc alloys until it reaches a coating consisting of 55% aluminum, 43.4% zinc, and 1.6% silicone. Galvalume: An aluminum, zinc, and silicone coating applied to steel core via hot-dipping process. Galvalume is the most economical and can be used with any of the three major panel types listed above, however even at 55% aluminum it will still rust if installed within close proximity to salt water. This category only includes cookies that ensures basic functionalities and security features of the website. As we mentioned, most manufacturers have stepped toward using Galvalume as the majority of their product offerings because it lasts longer and provides more benefits for property owners. However, there are some situations where Galvalume is NOT recommended for use. Both galvanized steel and Galvalume® weigh 100 to 150 pounds per 100 square feet and contain about 35% recycled materials. These cookies will be stored in your browser only with your consent. Bethlehem Steel introduced the Galvalume coating to the construction industry in the early 1970s. Galvalume is a mixture of zinc and aluminum. Galvalume® Metal Roofing System Properties. Details about Galvalume® are I've had a trailer without this option and my with. It is a trademarked name, but many people use it as a generic term to describe a metal roofing product consisting of  steel coil coated with a metal alloy. Galvalume looks quite similar to galvanized steel; however, after closer look one will notice that the surface looks more regular. The coating weight of the product is preceded by "AZ", which is the This unique coating protects the steel from corrosion while creating a tough, long-lasting finish. Most Galvalume®–like galvanized steel– is coated. In fact, galvanized products will degrade quicker in these environments, as the corrosion resistance is less than Galvalume. Aluminized steel is steel that has been hot-dip coated on both sides with aluminium-silicon alloy.This process assures a tight metallurgical bond between the steel sheet and its aluminium coating, producing a material with a unique combination of properties possessed neither by steel nor by aluminium alone. Galvalume and Galvalume Plus are used in applications that require spot welding, seam welding or arc welding during fabrication. That pretty much summarizes the key features of Galvalume versus Galvanized. Galvalume® may begin to show rust around the edges of the panel before galvanized, but the rust should stop when it comes in contact with the aluminum in the substrate. But bare Galvalume and coated Galvalume panels have an outstanding corrosion resistance in a wide variety of general environments, including industrial, marine and even severe marine environments. Additionally, galvanized metal sheet/coil may also be called G-90, which refers to the coating weight. By clicking “Accept”, you consent to the use of ALL the cookies. These steels are an appealing alternative to standard aluminum gutters because they are unique and give your home an added curb appeal without the high-end price tag. Guttersmiths was hired to install 6″ Galvalume … Longevity in the right environment– When galvanized metal roofing or wall systems are installed in the right environment, they’ve been known to last decades. If Galvalume is in contact with one of these and is then introduced to an electrolyte, such as water, it can lead to galvanic corrosion of the metal. Galvanized metal products have been around since the 17th century, but the process of “galvanizing” materials became a wide-spread practice in the early 19th century. Overall, Galvalume is suitable as a roof, wall, trim, accent, and more in most building applications in some of the most extreme environments, including hurricane zones, locations with high rain or snowfall, high-temperature regions, and more. It is created in a similar way to galvanized steel, by coating steel or iron into molten metal. The patented Galvalume process invented by Bethlehem Steel in 1972 is similar to galvanization, but also adds aluminum and silicon to the zinc. Aluminum vs Galvanized Steel. Bare Galvanized and painted Galvanized perform better in this type of environment. At Sheffield Metals, we carry one product that has a galvanized substrate, Vintage® from Steelscape. I explain in greater detail below. However, instead of using pure molten zinc such as in Galvanized steel, Galvalume is created by immersion into a molten mixture of zinc, aluminum, and silicon. Often not warrantied due to unpredictability and can develop excessive red rust when core is exposed. The only difference is Plus has a thin, clear acrylic coating. However, because of the superior durability and corrosion resistance of Galvalume, 90+ percent of the metal roofing and wall industry in the early 2000s transitioned from galvanized substrates to a Galvalume substrate. Read on to learn more about galvalume vs galvanized and the benefits of a galvalume roof. While our main product focus at Sheffield Metals is painted or bare 24-gauge Galvalume coils and sheets used in the architecturally-driven metal roof and wall industry, we sell galvanized metal products as well. Galvalume is a brand of metal roofing coated with aluminum and zinc alloy with seems every four feet. Galvalume roofing material combines three of the most important metals used in roofing today—steel, aluminum, and zinc.Manufacturers begin with a carbon steel base sheet, which is then continuously hot-dipped with aluminum and zinc alloys until it reaches a coating consisting of 55% aluminum… Galvalume is aluminum and zinc coated steel. A zinc coating hot-dipped onto a steel core with origins dating back to the 17th century. Steel exposed by itself without other protective metal coatings such as aluminum or zinc turns a reddish- or yellowish-brown flaky coating of iron oxide that is formed on iron or steel by oxidation, especially in the presence of moisture. Trailer roofs are normally covered with one piece seamless aluminum or metal that is not one piece and is made with other type of metal. We get a lot of questions about the different types of metal materials that can be used in metal roofing and wall systems. BIEC International Inc. is the worldwide licensor of the technology and know-how associated with 55% Aluminum-Zinc alloy coated sheet steel (better known as GALVALUME). Aluminum is highly resilient against corrosion, making it great for roofs located close to saltwater. Before the introduction of Galvalume to the metal roofing industry in the late 20th century, using galvanized sheet and coil was a common practice. The steel strengthens the gutter making it durable, while the zinc and aluminumcoating protects the steel from rusting. Gulf Coast goes a step further, using an ultra-fade-resistant PVDF premium paint finish on products such as GulfLok™, GulfSeam™ , … Aluminum makes up more than 50% of the coating, making it more resistant to corrosion. This zinc is easily scratched off, and the scratches are difficult to see. You also have the option to opt-out of these cookies. Galvalume performs best when not in contact with copper, bricks, treated lumber, iron, and concrete. Composed of 55 percent aluminum and approximately 45 percent zinc, this coating combines the best properties of both metals. One of the questions most frequently asked by architects is: What are the differences between  Galvalume and Galvanized Steel when used in roofing. most popular materials in today’s roofing market, conditions associated with a coastal environment, buy a weathertight warranty for their Galvalume roofing structure, methods to minimize the appearance of oil canning, galvanized substrate, Vintage® from Steelscape, use the preventative methods outlined in this article, Contact one of our knowledgeable metal roofing specialists today, Commercial buildings – Hospitals, schools, stores, government buildings, and more, Residential projects – Single-family, multi-family, condominiums, and more, Structural/industrial applications – Warehouses, factories, and more, Agricultural – Non-animal confinement spaces, barns, storage, and more, Hiring an experienced contractor who knows the best material handling practices that help reduce oil canning, Using striations or bead stiffeners in the flat area of the panel to minimize the appearance of oil canning. Aluminum has three distinct properties which continually make it the top-ranked material for residential gutter systems. (Note: A small degree of red rusting at cut edges is normal, but with a Galvalume coating, it will eventually stop.). Like Galvalume, galvanized products are not suited for use on animal enclosures or in coastal environments. This superior roofing material, also used as siding, is actually sheets of steel, coated with a composition of 45% zinc and 55% aluminum. Also sold under the trade names Zincalume ® and Galval®, Galvalume® was developed in the early 1970s. Galvalume should not be used on, in, or around concrete or mortar. Galvalume roofing material combines three of the most important metals used in roofing today—steel, aluminum, and zinc. Galvalume roofing material combines three of the most important metals used in roofing today—steel, aluminum, and zinc. Galvalume Half Round in Madison, WI The Adolph Wagner Home, located in Monona, is undergoing some restoration work. As the coating dries, patches of aluminum and zinc molecules coalesce into a pattern across the surface of the sheet. The rust on galvanized will just continue to spread and get worse because it doesn’t have that self-healing property. Self-healing properties – All steel-based products have some degree of edge creep from the exposed steel when the coil is cut, but it can be offset by hemming or touching up exposed edges with paint pens. We specialize in providing painted Galvalume® and aluminum for the architecturally driven metal panel industry. Mid-level price point – Historically, galvanized was generally the cheaper material when compared to Galvalume. An advantage of Galvalume that stems from this concept is the fact that it has self-healing characteristics that help control the red rusting at the cut/exposed edges. Those attributes are the fact it’s lightweight, durable, and will not rust. The problem with galvanized metal, painted or not, is that once it starts to red rust, it doesn’t eventually stop as Galvalume does. The combination of zinc and aluminum in Galvalume enhances both the positive and negative effects of aluminum. Introduced into the construction marketplace by Bethlehem Steel in 1972 and now widely available around the world, Galvalume ® is carbon steel sheeting coated with aluminum-zinc alloy by a continuous hot-dip process. Galvalume® (AZ) steel is a coated product contains approximately 55 percent aluminum, 43 percent zinc, and 2 percent silicon. In a nutshell, Galvalume is a proven metal roofing material because of its strength, outdoor corrosion resistance and longevity. (Note: There is not a substrate or paint warranty on Galvalume products within 1,500 feet of saltwater.). Often offered with paint, substrate, and weathertight warranty options and has self-healing properties. Concrete and mortar are highly alkaline environments. The main difference between galvanizing and Galvalume is that galvalume is a combination of zinc, aluminum, and silicon, while galvanizing is 100% zinc. Any cookies that may not be particularly necessary for the website to function and is used specifically to collect user personal data via analytics, ads, other embedded contents are termed as non-necessary cookies. As you can see, both galvanized steel and galvalume have their own benefits and drawbacks. Contact one of our knowledgeable metal roofing specialists today for answers to all of your questions about Galvalume, galvanized, or any other metal type! What Is Galvalume? These cookies do not store any personal information. Save Saved Removed 0. However, some people only ask if there is a warranty not how many years the warranty lasts, and most people do not check to make sure that they are not getting the inferior straight polyester system. Current pretreatments and primers along with superior paint coating have increased product warranties dramatically. The makeup of the three elements in a Galvalume coating is just over 50% aluminum, just under 50% zinc, with trace amounts of silicon. The underlying steel is coated with a zinc aluminum alloy that combines the long-lasting protection of aluminum with the self-healing properties of zinc. Sheffield Metals is a leader in the distribution of coated and bare metal products, as well as engineered standing seam metal roof (SSMR) & wall systems. It’s recommended that galvanized roofs are used in drier climates where there is not a nearby coastline, an animal enclosure, or significant air pollution. But there are methods to minimize the appearance of oil canning, including: Interactions with Other Materials – Combining different metals on a metal roof system can actually lead to interactions that could result in early degradation, staining, and potential failure of a system altogether. Coated metal roof panels have progressed from a single coat straight polyester paint system in the early years to Poly vinyl idene fluoride(PVDF)  acknowledged as the premium resin for coil coatings. Your website manufactured in 1975 and has been thoroughly tested in many types of environments Galvalume galvanized... Of Galvalume versus galvanized closer look one will notice that the steel with aluminum to form Galvalume, products... Best properties of both metals coating weight that help us analyze and understand how you use this.., we carry one product that has a thin layer of zinc and aluminum for the architecturally driven metal industry! 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