The World’s “Blackest Black” Makes Its Debut–On a Building

“You can’t just buy Vantablack and paint it on. SNS has to be involved with the application process of the highly flammable liquid, which has to be applied in a sprayed method overseen by the company. The building was coated ..by a team of British and Korean painters that had to be trained by SNS directly”

Quite the process for a shade of paint. This also assumes the building exterior will maintain showroom status. Any dirt or weathering and poof! it looks like normal black.