empire of windows supply and fit high-quality casement windows across the London. casement windows, most commonly known as traditional window style, as any profile with an outward-opening mechanism. As a result, they cover a broader range of style than any other windows. meaning you need to be stocking quality profiles. We have over 21 years of experience in supplying the highest quality and latest triple glazing on the market! our uPVC windows are supported by ten year guarantee minimum and are manufactured using state of techniques. Our uPVS windows come with multi -chambered of profiles. many of which have additional uPVS chambers to prevent the cold air from outside transferring into a warm home.