Gilkey Window Co., Inc. manufactures and installs premium residential and commercial windows and doors. In 1978, Gilkey Windo ... w Company was established in Cincinnati, Ohio. At that time, our major sources of windows were the large, national window manufacturers. We also installed custom-made windows from three national brands of replacement windows. To give our customers the most dependable window and service, we started manufacturing our own vinyl window in 1986. We were the first company in Cincinnati to offer a totally fusion-welded window system and the first to offer a window with custom spectrally selective Low E glass. In addition, Gilkey was the first manufacturer in Cincinnati to be rated by the National Fenestration Rating Council (NFRC) and qualify for the Energy Star® from the Department of Energy. Gilkey Window Company is recognized nationally as having the highest quality vinyl windows in the United States. We currently are located in the Cincinnati, Dayton, Louisville, Lexington and Chicago markets read more