In February 1954, Mustain Glass Company was established by the late Hidy and Ott Mustain. Mustain Glass resided on Loyal Street in downtown Danville, Virginia. Mustain Glass offered an array of services ranging from residential to commercial to automotive. This company provided the humble beginnings for what is known today as Piedmont Glass.
Upon Hidy Mustain's retirement, the business was bought by the Cassadas, and the name was changed to Piedmont Glass. The company then moved to its present location in 1990.
Since the retirement of the Cassadas in 2017, the company was purchased and still serving Danville and surrounding areas from 124 Mall Drive.