Our History

Founded as Edge Seal Technologies in 1987, INTIGRAL quickly became the first supplier to deliver thousands of insulating glass units sequenced for production within 24 hours! Serving one customer at that time, EST was the first in the industry to supply insulating glass units to a window company on an in-sourcing basis (under the same roof).

To better identify the company and products, the name was changed to INTIGRAL, Inc. in September 2007. The company continues to be owned by co-founders Edmund Leopold and Dick Dietrich.