Carpet & Vacuum Expo 7715 Tuckerman Ln, Potomac, MD20854 Owned by an area native, Mike Zanville, Carpet & Vacuum Expo has served the wall-to-wall needs of local residents…More and businesses since 1991. In 2003, it moved to its current location, the Cabin John shopping center. It offers flooring as well as carpeting of many different surfaces and textures. In addition, it sells cleaning liquids and vacuums. It complements its service by providing installation.