Quality Double Glazing in Derby and Derbyshire Kedleston Windows is a family run business based in Derby, Derbyshire. We began trading in 1996 and have gone from strength to strength over the last twenty years due to our excellent products and exceptional customer service. We specialise in the supply and installation of high quality double glazing and other home improvement products. Our high performance uPVC windows, doors, porches, conservatories and Orangeries appeal to homeowners and businesses alike. Our Service Being a family run business means that we are passionate and dedicated to offering an exemplary service to all our clients. Unlike many other double glazing companies, all our work is completed by in-house installers and we never outsource building work. This ensures that we can closely monitor the performance and that we have a consistently professional approach and a high quality finish to all our installations.