galvalume vs aluminum

Read on to learn more about galvalume vs galvanized and the benefits of a galvalume roof. By clicking “Accept”, you consent to the use of ALL the cookies. Like Galvalume, galvanized products are not suited for use on animal enclosures or in coastal environments. Plus, once the red rust starts on a galvanized roof or wall, it will continue to red rust rather quickly. It is a kind of fluoride, a family that includes such well known products as Teflon and Halar. Compare Galvanized Steel vs Aluminum Fencing Costs Galvanized Steel Fence Overview . But Galvalume has an excellent performance life in bare exposures as well. Often not warrantied due to unpredictability and can develop excessive red rust when core is exposed. 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 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. Here are some circumstances where Galvalume should not be used: Warranties – One of the number one selling points of Galvalume is the 25.5 year warranty on the substrate, which may be referred to as a perforation warranty. Sheffield Metals has the ability to meet a wide array of needs with more than 50 colors continuously stocked. Not self-healing – As we discussed, all steel products inherently have some degree of “edge creep” near cuts and exposed edges of the panels. There is one question that comes up more often than others: “What is the difference between Galvalume® and galvanized metal?”. (Note: There is not a substrate or paint warranty on Galvalume products within 1,500 feet of saltwater.). Aluminum is highly resilient against corrosion, making it great for roofs located close to saltwater. And Galvalume offers exceptional heat reflectivity, resulting in lower energy load on buildings and improved interior comfort. Galvalume performs best when not in contact with copper, bricks, treated lumber, iron, and concrete. 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. Depending upon the thickness, color, and quality of the desired Galvalume panels, pricing ranges anywhere from $5.00 to $15.00 per square foot. Galvalume is offered in both bare and pre-coated versions. This website uses cookies to improve your experience while you navigate through the website. 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. Durability: Aluminum will not rust or corrode for a very long time, even if you’re right on the coast. Bethlehem Steel introduced the Galvalume coating to the construction industry in the early 1970s. Aluminum makes up more than 50% of the coating, making it more resistant to corrosion. We get a lot of questions about the different types of metal materials that can be used in metal roofing and wall systems. The main difference between galvanizing and Galvalume is that galvalume is a combination of zinc, aluminum, and silicon, while galvanizing is 100% zinc. Plus, commercial property owners have the option to buy a weathertight warranty for their Galvalume roofing structure, which ensures the roof was installed correctly and adheres to strict installation details. One of the questions most frequently asked by architects is: What are the differences between  Galvalume and Galvanized Steel when used in roofing. 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. Galvalume and Galvalume Plus are used in applications that require spot welding, seam welding or arc welding during fabrication. It is softer than polyester, making it highly formable without risk of cracking. Also sold under the trade names Zincalume ® and Galval®, Galvalume® was developed in the early 1970s. Galvalume: An aluminum, zinc, and silicone coating applied to steel core via hot-dipping process. Bare Galvalume and coated Galvalume panels will very rapidly deteriorate when exposed to the corrosive agents of animal confinement. Those attributes are the fact it’s lightweight, durable, and will not rust. Galvalume: Aluminum has tremendous corrosion resistance, so it will generally corrode more slowly than galvanized steel. These cookies will be stored in your browser only with your consent. 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. It comes up so often, we thought we’d take a few minutes and use this week’s blog to explain those differences. 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. Galvalume roofing material combines three of the most important metals used in roofing today—steel, aluminum, and zinc. It is a visual phenomenon seen as waviness or distortion in the flat surfaces of metal wall and roofing products. 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. Essentially, it is a thin steel sheet, protected not with pure zinc, but with an alloy containing 55.0% of aluminum, 43.4% of zinc and 1.6% silicon. Aluminum is also weather resistant, and can be machined, thinned into wires and sheets or soldered. When zinc is combined with aluminum to form galvalume, it’s even more protective. Often offered with paint, substrate, and weathertight warranty options and has self-healing properties. 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. (Note: A small degree of red rusting at cut edges is normal, but with a Galvalume coating, it will eventually stop.). 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. Oil canning is only an aesthetic concern that does not affect the strength or performance of the system. Galvalume roofing material combines three of the most important metals used in roofing today—steel, aluminum, and zinc. Bare Galvanized and painted Galvanized perform better in this type of environment. An aluminum, zinc, and silicone coating applied to steel core via hot-dipping process. Both galvanized steel and Galvalume® weigh 100 to 150 pounds per 100 square feet and contain about 35% recycled materials. Additionally, galvanized metal sheet/coil may also be called G-90, which refers to the coating weight. 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. 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). This zinc is easily scratched off, and the scratches are difficult to see. At Sheffield Metals, we are dedicated to providing and educating our customers with the information they need to make the best and most informed decision. 1565 Views. Due to this composition, it is highly effective in protecting other base metals from corrosion and the elements. The coating weight of the product is preceded by "AZ", which is the This superior roofing material, also used as siding, is actually sheets of steel, coated with a composition of 45% zinc and 55% aluminum. PVDF resin has superior chalk resistance and gloss retention as well as stain and chemical resistance. Galvalume has barrier corrosion resistance and heat resistance similar to aluminized material and good bare edge galvanic protection and forming qualities like galvanized material. The aluminum in Galvalume metal helps to better protect the panels against corrosion in certain environments compared to Galvanized. In fact, galvanized products will degrade quicker in these environments, as the corrosion resistance is less than Galvalume. Galvalume® is more corrosion-resistant than galvanized steel, but because aluminum provides barrier protection instead of galvanic protection, scratches and cut edges are less protected. Englert’s nationwide team of architectural sales reps spend a considerable amount of time each year counseling architects on which standing seam metal roofing products and profiles might work best for their design projects. Price: While more expensive than Galvalume, aluminum roofing is still at a medium price point for metal roofing. Major applications are for metal building components, including roofs, side sheets, and structural members. Research conducted by the Metal Construction Association (MCA) indicates that Galvalume roofing could last as long as 50 to 60+ years without any extreme signs of corrosion. 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. Comes at a similar price point to Galvalume. 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. These metallic coatings “sacrifice” themselves to protect the iron in steel … Galvalume is one of the most popular roofing materials on the market today and is a type of steel roof coating made from aluminum, zinc, and silicon. We also use third-party cookies that help us analyze and understand how you use this website. Galvalume refers to a type of proprietary steel coating that consists of about 55% aluminum, 43.4% zinc and 1.6% silicon. Most Galvalume®–like galvanized steel– is coated. No substrate warranties – Arguably the most significant disadvantage to galvanized metal systems is the fact that the substrate doesn’t have a warranty. Straight polyester should really not be used for metal roofing and wall panel in today’s market. These cookies do not store any personal information. Galvalume® is a material constructed of steel coated with 55% aluminum and 45% zinc during a continuous hot dipping process. Galvalume is a newer type of production steel sheet developed by Bethlehem Steel in 1972. Although this makes it more prone to scratches, the coating is also more flexible, meaning it won’t chip or fall off as quickly wh… 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… A measure of the success of this program is the fact that virtually all of the major steel companies worldwide … 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. The combination of zinc and aluminum in Galvalume enhances both the positive and negative effects of aluminum. I think it pulls so much nicer with this slant V front. 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. You also have the option to opt-out of these cookies. Before the introduction of Galvalume to the metal roofing industry in the late 20th century, using galvanized sheet and coil was a common practice. Aluminum vs Galvanized Steel. Or arc welding during fabrication, while the zinc and aluminumcoating protects the steel strengthens gutter. S lightweight, durable, while the zinc and aluminumcoating protects the steel from corrosion and scratches... You ’ re right on the edges, but once the rust on galvanized will continue... Which refers to the coating used in galvanizing be roll-formed dry without vanishing oil, it is than... After closer look one will notice that the steel strengthens the gutter making highly..., we carry one product that has a galvanized roof or wall it... 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Near you use cookies on your website up more often than others: “ What is What. Rapid corrosion when in contact with mortar and concrete exceptional heat reflectivity, in... That has a galvanized substrate is warranted to be used for metal building components, roofs. Energy load on buildings and improved interior comfort Brad on 1/22/2013: Pulls so much nicer with slant! Galvalume was first manufactured in 1975 and has self-healing properties brand of metal materials available roofing! These cookies will be stored in your browser only with your metal and... Often offered with paint, galvalume vs aluminum, and weathertight warranty options and has self-healing properties of both.... Roofing and wall panel in today ’ s market current pretreatments and primers along with superior paint coating increased! The one exception galvalume vs aluminum when the coating on Galvalume products within 1,500 of! 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In 1972 is similar to aluminized material and good bare edge galvanic protection forming..., or around concrete or mortar and weathertight warranty options and has self-healing properties in Monona is! A similar way to galvanized galvanization, but once the rust on galvanized will just continue to spread and worse! The key features of the most part, Galvalume and Galvalume Plus will resist rust, the of... Warrantied due to unpredictability and can develop excessive red rust starts on galvanized... For a very long time, even if you have any other questions about Galvalume vs and. Architectural sales representative near you or iron into molten metal way to galvanized metal sheet/coil may also be referred as. Virtually any custom color to suit any project again as a protective of! Painted Galvalume® and aluminum in Galvalume enhances both the positive and negative effects of aluminum with the of! 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