I had my windows fitted by Everest at the end of June 2010. My purpose of this communication is to inform you how delighted we are with the windows. The windows that were replaced were in fact double glazed timber windows that had been in for many years. Every winter over the past twenty odd years these two large windows invariable every morning would be running with damp on the inside. Well the good news is, the windows fitted by you all through the bad weather, up to date have been dry in the mornings. We have some heat on through the winter as we always have, but the difference is just incredible, a dry and warm room. The workmanship and fitting was superb, quality outstanding, I can recommend this product to anyone without question. (Top quality windows) Thank you very much for total satisfaction.