Are Castle Windows maintenance free? All Castle Windows are made to be maintenance free so you can spend more time with family and friends...not working on your windows. Designed to Last Castle Windows will not chip, flake and rot like wood windows or corrode like aluminum. All Castle Windows are designed with clean sightlines, and low profile hardware to provide an attractive appearance and maintenance free operation. Castle Windows are made of virgin vinyl eliminating the need for interior or exterior painting, glazing, or weather-stripping. Not only do Castle Windows clean easily from inside but on the outside, the framing around your windows can be custom covered to create a maintenance free exterior in many colors to eliminate any painting and give your home the look you'll love. You'll have the intengrity of a structurally sound window as well as beauty. Cleaning is Simplified Castle Windows come in many different styles all of which clean easily from inside the home. We make it a snap with these tilt-in sashes that allow you to clean the exterior glass. You'll find that tilting, opening and closing the window sash is quite easy. This is due to the full, integrated lift rails designed into the sash and the self lubricating balances that provide easy, dependable operation. You are here: Home >> Product Guide >> Question #4