Here McCahill Painting Company removes years of biological growth and environmental contamination from metal siding and concrete curbing at a food storage warehouse. Our skilled technician first wets the surface to ensure the cleaning chemical doesn't absorb into the material. Next, we apply a biodegradable, environmentally-safe cleaning chemical to the metal and concrete. Finally, we power wash the surfaces with hot water to remove all contamination and restore the metal and concrete to like-new condition. It is important to maintain a cleaning regimen on these surfaces so contamination is regularly removed, otherwise contamination will build up and corrode the metal and encourage bacteria that is unsafe for food storage.