Full-Sash Ventilation
The entire sash opens outward, delivering more airflow than sliding or double-hung styles.
Casement windows crank open from the side for maximum ventilation and an unobstructed view. A sleek, modern choice for Houston homeowners who want clean lines and strong airflow.
Installed by in-house crews • Lifetime warranty • Houston-based




Casement windows are hinged on one side and swing outward with a crank mechanism, allowing the entire sash to open — giving you more ventilation than almost any other window style. When closed, the sash presses firmly against the frame, creating a tight compression seal that helps block Houston's heat and humidity.
Because there's no rail or divider running through the middle of the glass, casement windows offer an unobstructed, panoramic view of your yard or surroundings. This makes them a popular choice for living rooms, kitchens, and any room where the view matters.
Royalis Windows installs casement windows custom-fit to your opening, with multi-point locking hardware and Single Hung glazing options. Our in-house crews handle everything from the old window removal to the final inspection — clean, professional, and done right the first time.
The entire sash opens outward, delivering more airflow than sliding or double-hung styles.
When closed, casement windows press tight against the frame — one of the most airtight seals available.
No center rail means a clear, wide view of your outdoor space from inside your home.
A simple crank handle opens and closes the window smoothly — great for hard-to-reach spots.
Ready to start?
Get a clean, no-pressure estimate from a Houston window team that handles the project in-house.