Bridges are exposed to various natural environments, and over time, their original coatings gradually age and deteriorate. Renovation coating helps reestablish an effective anti-corrosion barrier to prevent corrosive elements from penetrating the structure.

Before starting a renovation project, a comprehensive assessment of the bridge’s current condition is essential. This includes evaluating the environmental conditions, the extent of surface corrosion, and checking the structural integrity of the bridge.

If the bridge is located near the sea, coatings with excellent salt spray resistance should be selected. For example, cold-sprayed zinc provides both cathodic and barrier protection for steel structures. It also has a much lower VOC content than hot-dip galvanizing, reducing health and environmental risks, and aligning with modern environmental standards.

For bridges that show signs of corrosion, surface treatment is required during renovation to remove rust and old coatings. Anti-corrosion coatings such as a graphene epoxy zinc-rich primer + epoxy micaceous iron oxide intermediate coat + polyurethane topcoat can effectively stop further steel corrosion.

If the bridge is structurally sound but shows surface fading, polyurethane coatings are ideal. They offer strong adhesion and weather resistance, maintaining a good appearance even in harsh climate conditions.

Selecting the right coatings based on the actual condition of the bridge ensures long-lasting protection and adds vibrant color to urban infrastructure.