Casement and Awning Windows

When choosing the right windows for your home, it’s important to consider the height and width of the opening. Casement windows are often used when the height of the window is greater than the width. Alternatively, awning windows can be used when the width of the window is greater than the height.

To help you make the best decision, let’s explore the advantages of each type of window and their ideal use cases.

Living room with three white casement windows

Features of Casement Windows

Casement windows provide superior energy efficiency, maximum ventilation, and an unobstructed view for window openings where height is significantly greater than width. Casement windows are often chosen as a style preference for their clean design or to match existing windows in the home.

Casement windows are some of the most energy efficient options on the market. Rather than relying on weather stripping to prevent air leakage, casement windows close with a tight pressure seal that is highly effective in reducing air infiltration.

Casement windows, compared to sliding and double-hung windows, provide a clear, unobstructed view due to the absence of a meeting rail. With their unique design, casement windows also offer full ventilation, as opposed to the limited ventilation of other window styles.

Casement windows utilize a crank to operate the window open and closed. Modern casement windows often feature crank movements that are designed to move smoothly and offset any weight of the window itself, offering easy and effortless operation.

Many designs of casement windows open up to a  90 degree angle to allow easy cleaning of the exterior of the window.

Everyone at WoW went above and beyond, and exceeded my already high expectations. Our house is now warmer, quieter, and looks so much better!

Anne D.

Window Replacement Centreville, VA

Simply put, it was one of the best contracting / house project experiences we’ve had.

Trey P.

Window Replacement Vienna, VA

Casement and awning windows open to yard

Features of Awning Windows

Awning windows are the perfect solution for when the width of a window exceeds its height. They feature a top hinge and open from the bottom, raising the glass and providing shelter over the window opening. Available in various sizes,  these windows are often utilized for smaller openings. 

Awning windows are very energy efficient when compared to other window styles due to fewer moving parts and compression created when the window is closed.

Similar to Casement windows, Awning windows provide a clear, unobstructed view due to the absence of a meeting rail. 

Awning windows, with their unique design, provide enhanced ventilation compared to styles like sliding windows. Notably, they can remain open for airflow even during rain, effectively keeping your home ventilated,  despite the weather conditions.

Because Awning windows are typically smaller than other window styles and difficult to break into from exterior, they are great option in areas where security is a concern. 

Why Do We Prefer OKNA Windows?

 OKNA Windows has built an industry reputation by combining state-of-the-art equipment, advanced technologies, and dedicated craftsmanship. We know OKNA windows are built to last and will keep your home looking beautiful and your family comfortable for years to come.

Air infiltration (or air leakage) measures how much outside air can sneak in through tiny gaps in a new window. The lower the number, the more energy-efficient your window is—because the air you’ve already heated or cooled stays where it belongs. And while solar coatings help only when the sun is shining, airtight windows improve efficiency 24/7. That’s why we strongly recommend Okna windows. They’re engineered to be exceptionally airtight, and the Okna EnviroStar Double Hung boasts an air infiltration rating of 0.01 - the best in the industry!

Design pressure (DP) refers to how much external force a window can withstand without compromising its structural integrity. It measures a window’s ability to resist wind, water, and other environmental pressures. Okna windows have some of the highest DP ratings available for residential replacement windows.

Okna windows are renowned for their exceptional appearance and meticulous craftsmanship. Their sleek profiles and clean lines create a timeless, elegant look that enhances any home. With a wide range of styles, finishes, and colors, homeowners can easily customize their windows to match their architectural style and personal preferences. The precision manufacturing behind every Okna window ensures a refined, sophisticated finish.
Arched bow window with cushioned seat and garden view

What Okna Window Is Right for My Home?

Okna has several options to fit your design needs and budget. Here are a few of our favorites.

Living room featuring Starmark Evo replacement windows

Starmark Evo 2500

Starmark Evo 2500 Casement Windows offer beauty and functionality. The superior design makes it ideal for not only single windows but also for multiple assemblies like bows, bays, and picture windows as well as your own original combinations. A beveled screen frame offers the appearance of wood molding for added beauty.

Kitchen with energy-efficient Enviro-Star window above sink

Enviro-Star 800

The OKNA Enviro-Star 800 is Okna’s premier Replacement Window. The Enviro-Star combines superb craftsmanship with an old world look and feel. This Series offers a myriad of glass and structural options to seamlessly blend with any décor while providing the utmost in energy efficiency. Since all OKNA products are custom-made, you can be sure of a perfect fit every time.

Modern living room showcasing Insul‑Tec replacement windows

Insul-Tec 500

The Insul-Tec 500 combines excellent craftsmanship with a traditional look and feel. This series offers all the benefits you come to expect from vinyl windows with a variety of options to make your home energy efficient while enhancing its beauty. Since all OKNA products are custom-made, you can be sure of a perfect fit, which translates to savings on time and labor during installation.

Our Reviews Speak for Themselves

Our reputation for client service excellence means everything to us. Our Client Care process ensures you are informed throughout your project, with no surprises. As you can see from our hundreds of 5-star reviews, we consistently exceed our clients’ expectations. We look forward to showing you the “WoW difference” in home improvement contracting.

Everyone at WoW went above and beyond, and exceeded my already high expectations. Our house is now warmer, quieter, and looks so much better!

Anne D.

Window Replacement Centreville, VA

Simply put, it was one of the best contracting / house project experiences we’ve had.

Trey P.

Window Replacement Vienna, VA

You Are 3 Easy Steps Away from Project Success!

  • Schedule a No-Pressure Consultation

    One of our experts will discuss your project either in your home or virtually

  • Discuss Your Project

    Our expert will learn about your needs, ask some questions, and suggest the best products and service for your specific project and budget, empowering you to make informed decisions

  • Choose WoW and Relax!

    When you choose to partner with us, you can rest assured we will take care of every detail and keep you informed every step of the way

Exterior shot of home showing Three‑step home improvement process