The answer is yes, especially when exposed to weather conditions over a long time. But it is very slow. Galvanized steel roofing sheet is simply covered with a zinc layer on the surface to prevent oxidation and rust. However, when the zinc coating is broken, the substrate will rust. Below are some tips for you.
1. Choose a Suitable Zinc Coating Thickness
Generally, the thick the zinc layer, the longer the service life. Our GI roof is mainly made of hot-dipped galvanized steel sheet, with a zinc coating of 40 g/m2 to 275 g/m2. If your roofing sheets are used in corrosive environments, such as marine or chemical industrial areas, you can choose a thicker zinc coating roof.
2. Paint With Color Coatings
In order to prolong the service life of your roof, you can also paint the roofing sheets to prevent rust and maintain their beauty.
3. Periodical Maintenance
Galvanized steel roofing sheets are almost maintenance-free. But regular maintenance, such as cleaning with water, will remove the corrosive factors to prolong its service life.
Galvanized Steel Roof Sheet
