We offer the best value for your investment. Stanek® Windows are custom built, just for you. Our windows are of exceptional quality, offer superior performance and energy efficiency, not to mention are beautiful, affordable and easy to maintain. But more importantly, we control the process from start to finish. We design, make, install, guarantee and service your windows. You can get a new window anywhere; but Stanek windows deliver benefits far beyond style. The energy-efficient windows and patio doors are engineered to outperform the elements and the competition. To reinforce our commitment to quality, we independently certify and test our windows and patio doors. We offer advanced thermal protection that increases energy efficiency and lowers energy bills. With Stanek Windows, you will have peace of mind knowing you have made a beautiful choice with lifetime performance.