Both materials are exceptionally durable, but they age differently. A Galvanized Steel building is designed to last 50 to 100 years with virtually no structural maintenance because the zinc coating protects the core steel from the start. A Red Iron building can also last 50+ years, but its “transit primer” is not a permanent shield. To reach a 50-year lifespan, Red Iron must be professionally painted after installation and repainted every 10–15 years to prevent structural decay.