Galvalume vs. galvanized roofs: which is right for you?
In metal roofing projects, it can be difficult to determine which material is right for the job. The two most popular roofing materials used when completing roofing projects with corrugated sheeting are galvanized metal and aluminized zinc metal.
What is the difference between galvanized and aluminized metal roofing materials?
In metal roofing projects, it can be difficult to determine which material is right for the job. The two most popular roofing materials used when completing roofing projects with corrugated sheeting are galvanized metal and aluminized zinc metal. Depending on the specifications of your project, each of these metal roofing products can offer significant advantages over lower quality materials.
What is galvanized metal?
Traditional galvanized metal roofing is corrugated carbon steel panels with a galvanized coating. The coating is formed by dipping a straight sheet into hot molten zinc. The zinc ions combine with the iron molecules in the steel to create a glossy, rust-resistant surface finish. This process is called electroplating.
After the coating has hardened, the sheets are cold formed in a corrugated process and bent into a parallel linear pattern. When installed as a roof, these "corrugations" give the sheets greater strength and stability.
Typically, galvanized sheet roofing is used primarily in agricultural buildings where rusting is less of a problem and costs must be kept low. Architects can also use galvanized metal roofing to find the traditional rusty look in new construction.
Galvanized Metal Benefits
If you are in the market for a quality metal that offers proper corrosion protection, then galvanized metal may be the choice for you. Galvanized metal products offer many benefits, including.
â–ºLow maintenance
â–ºEconomy
â–ºEnhanced strength
â–ºLong lasting
â–ºExcellent protection
What is Galvalume Zinc Metal?
Galvalume manufacturing process is similar to galvanizing, but with the addition of aluminum and silicon to the zinc. As the coating dries, patches of aluminum and zinc molecules coalesce into patterns on the surface of the sheet.
The aluminum areas provide corrosion resistance, while the zinc provides galvanizing protection. The small amount of silicon helps the coating adhere to the metal beneath, even when cut or rolled into corrugated shapes.
Galvalume Metal Advantages
Galvalume metal products provide superior protection against corrosion in any environment. galvalume's protective surface coatings are more resistant to ice, rain and snow than galvanized steel products. Benefits of Galvalume metal include.
â–º Excellent corrosion resistance
â–ºEnhanced heat resistance
â–ºGood strength
â–ºHeat reflection
â–ºCost-effective
Distinguishing between Galvalume and Galvalume metal roofing materials
Several key changes distinguish galvanized metal from Galvalume roofing metal products. Both metal roofing materials offer greater strength and stability than standard graphite and asphalt shingles, while Galvalume metal products offer better corrosion resistance than standard galvanized metal.
Galvalume Metal or Galvalume Metal - Which is Best for Your Roof?
So, which is better for your roof? There are advantages and disadvantages to each type.
Galvalume's extra corrosion resistance means that scratches, bends or cut edges won't rust as quickly and is a better choice in rainy climates and salty air.
Paint does not adhere well to Galvalume, so aesthetics may not be as good. In addition, Galvalume costs more than galvanized metal roofing - but the fact that Galvalume metal roofing has twice the life expectancy of galvanized roofing of the same thickness makes up the difference. For these reasons, Galvalume metal roofing is preferable.
Contact TIANJIN BEST STEEL today for galvanized and galvalume metal products
Protect your structure today with quality galvanized and Galvalume metal products. Contact TIANJIN BEST STEEL TRADE CO., LTD to get corrosion resistant aluminized and galvanized metal products for your next project.
