Steel buildings are largely durable and strong structures. However, they can experience damages that will need to be repaired if the structure is to remain stable and sturdy. Luckily, the design and construction of these structures will make many of the more common damages that are encountered easy to repair. Corrosion The exterior of metal buildings will be treated with coatings that can protect them against corrosion. Unfortunately, this coating will not be permanent, and it will eventually weaken.