Benefits of Galvalume Coatings

Galvalume is a tough, durable coating that protects the steel from corroding. Although corrosion resistance is the topmost benefit that galvalume promises, there are many other benefits the material is known for. Before we dig into it, let’s have a look at what galvalume is and how it is to be used. 

Galvalume Overview:

Galvalume is created by using aluminium and zinc in the ratio of 55% to 44% and some amount of silicon that ensures durability and even adhesion. It is the aluminium that differentiates galvalume from galvanized steel. Galvanization is done with zinc alloy. Steel coated with galvalume has a similar appearance to galvanized steel but has a smooth appearance made possible by binding all crystals close together. 

Application of galvalume is via hot-dip process. It is applied to both the sides and offers protection to edges as well. Usage of zinc and aluminium in the coating lends it the property of aluminium to enhance protection capabilities above and beyond zinc. While aluminum offers barrier protection, zinc provides protection against scratches. Zinc also prolongs the life of steel that lies underneath. 

The Benefits of Galvalume:

As mentioned earlier, the prima ry benefit of galvalume is corrosion resistance. The addition of aluminium enhances the coating’s corrosion resistance. Robust protection is guaranteed if the steel panel is in an area where high humidity predominates such as marine environments. Other benefits of galvalume coatings include:

• Galvalume coatings do not add to the weight of the steel. Therefore the metal’s high strength to weight ratio is effectively retained. Similar to steel, the coating is strong and durable. The coating also doesn’t flake or crack when the sheet is bent and is flexible enough. 
• Galvalume coated steel also has superior reflectance in sunlight. This reduces heat absorption through roof panels. Re-emissive pigments that are added to the coatings improve energy efficiency and protection from corrosion. Insulation properties of sheets coated with galvalume leads to saving of costs in both summers and winters. Galvalume is also resistant to high temperatures. 
• Besides energy efficiency, the galvalume sheet price in India is also less than stainless steel. It comes with minimal maintenance and repair needs. Galvalume has a service life of 40-60 years. 
• Galvalume can be used in both architectural and structural roofing. Galvalume steel panels can be easily installed over any surface ranging from asphalt shingles to wood underlayment. 
• Galvalume enhances the versatility of steel. Galvalume coated steel can easily be bent, stamped, rolled, and fabricated without losing the protection of the coating. Galvalume also improves the fire resistance capacity of a surface. 
• Make sure to select a reputed company such as JSW Steel when hunting for galvalume. JSW is the first licensed galvalume producer in India that uses technology from BIEC International Inc., USA.