When the History Colorado Center in downtown Denver was defaced by graffiti, the building’s management needed a cleaning solution that would remove the vandalism without damaging the facility’s distinctive architectural surfaces. Traditional power washing risked etching the building’s materials, while chemical solvents posed environmental and health concerns. NG Companies stepped in with a specialized approach that restored the building’s appearance while preserving its integrity.

A Unique Cleaning Challenge

The History Colorado Center is one of Denver’s most recognizable landmarks, featuring a modern design with distinctive exterior surfaces. Graffiti on such a prominent public building required swift removal, but the cleaning process had to be carefully managed to avoid creating more damage than the vandalism itself. The building’s materials demanded a gentle yet effective approach that would strip away the paint without abrading, discoloring, or otherwise altering the underlying surface.

The NG Companies Approach

NG Companies deployed specialized cleaning equipment that allowed our operators to precisely control water pressure and flow characteristics to match the requirements of each surface area. By adjusting the cleaning parameters for different sections of the building, the crew was able to remove the graffiti completely without leaving any evidence of the cleaning process. The contained water and debris collection system ensured that contaminated runoff was captured and disposed of properly, meeting Denver’s stormwater management requirements.

Community Impact

The successful cleaning of the History Colorado Center demonstrated NG Companies’ versatility beyond traditional excavation and utility services. Our equipment and expertise can be applied to a range of cleaning and remediation challenges that require precision, power, and environmental responsibility. The project reinforced our commitment to supporting the communities where we live and work, and the building’s management was pleased with the rapid, effective results. Whether the job involves underground utilities or above-ground surfaces, NG Companies delivers professional solutions that exceed expectations.