Galvanized sheet is used in many industries, including construction, automotive, appliance, electrical hardware, drainage, and HVAC. While there is much information about the corrosion rate of zinc in the myriad environments where this product is used, the specified zinc coating mass is sometimes not suited for the end use.
When it comes to parking garages, durability is key, as they are often located in busy metro areas where closure, repair, or reconstruction can be disruptive. Time, labor, and material costs for renovation are also prohibitive. These structures are generally made from reinforced cast-in-place or precast concrete, making corrosion one of the most common challenges to durability.
Aluminum accounts for the greatest share of the U.S. commercial market for windows, doors, and skylights. Its manufacturing versatility, structural longevity, performance dependability, and near-infinite recyclability contribute to its popularity.
Exterior steel elements—both structural (e.g. columns) and architectural (e.g. handrails)—need to be protected from corrosion, usually with high-performance coatings. However, even high-performance coatings degrade when exposed to severe environments.