Living room with large replacement windows and sofa

Upgrade Your Home With Window Replacement

Thinking about replacing your windows? You’re in the right place. Today’s replacement windows are more beautiful, affordable, and energy-efficient than ever, and we’re here to help you choose the perfect fit for your home.

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Understanding the Different Types of Replacement Window Frames

Vinyl Replacement Windows

Vinyl replacement window frames are the most popular choice for homeowners because they offer the greatest energy-efficiency and the greatest variety of styles. Apart from their high energy-efficiency and modest price point, vinyl replacement windows come in a wide range of colors, grids, and hardware options that allow you to customize the look of your home. They are also virtually maintenance-free, easy to clean, and never require painting or re-coating, so your home will look its best for years to come.

Vinyl Windows Offer Fantastic ROI
Perhaps one of the greatest benefits of choosing vinyl replacement windows is the large return on investment (ROI) they provide. A recent report from the National Association of Realtors revealed that new vinyl windows offer an 80% ROI. That means almost all your initial outlay for vinyl replacement windows will be regained in your increased home value.

Fiberglass Replacement Windows

Fiberglass replacement windows have a wide range of benefits that make them a sound window replacement choice. Not only are they low maintenance, they also can be structurally superior to metal or vinyl windows. But perhaps the most important features of fiberglass windows are that they offer an increase in thermal performance (which lowers your energy bills), better overall strength and durability, and excellent flexibility in design. Fiberglass windows also come in a variety colors that will not scratch, chip, or fade over time.

Wood Replacement Windows

Wood windows are the most luxurious option for window replacement. Their warm, natural appearance and organic texture create a timeless look that’s difficult to match. With numerous style choices available, wood windows are often the ideal solution for historic homes and properties where architectural integrity and character are essential. Like all natural materials, wood requires regular upkeep and is susceptible to rot and termites, so be sure to speak with the Windows on Washington team about the best ways to maintain wood windows for long-lasting beauty and performance.

Understanding the Different Types of Replacement Window Frames

Close‑up of fiberglass window frame and lock

Vinyl Replacement Windows

Vinyl replacement window frames are the most popular choice for homeowners because they offer the greatest energy-efficiency and the greatest variety of styles. Apart from their high energy-efficiency and modest price point, vinyl replacement windows come in a wide range of colors, grids, and hardware options that allow you to customize the look of your home. They are also virtually maintenance-free, easy to clean, and never require painting or re-coating, so your home will look its best for years to come.

Vinyl Windows Offer Fantastic ROI

 Perhaps one of the greatest benefits of choosing vinyl replacement windows is the large return on investment (ROI) they provide. A recent report from the National Association of Realtors revealed that new vinyl windows offer an 80% ROI. That means almost all your initial outlay for vinyl replacement windows will be regained in your increased home value.

Vinyl replacement window

Fiberglass Replacement Windows

Fiberglass replacement windows have a wide range of benefits that make them a sound window replacement choice. Not only are they low maintenance, they also can be structurally superior to metal or vinyl windows. But perhaps the most important features of fiberglass windows are that they offer an increase in thermal performance (which lowers your energy bills), better overall strength and durability, and excellent flexibility in design. Fiberglass windows also come in a variety colors that will not scratch, chip, or fade over time.

Wood-framed replacement window in bedroom with nightstand

Wood Replacement Windows

Wood windows are the most luxurious window replacement option. But you simply cannot beat the beautiful, warm, organic look and feel of wooden window frames. There are many style options when it comes to wood replacement windows, and for many homes and historic buildings, they are the best choice for retaining (and even adding) design integrity, character, and charm. Like many natural materials, wood requires considerable upkeep, and is vulnerable to rot and termites, so ask the Windows on Washington experts about how to maintain wood replacement windows for optimal function and beauty.

Replacement Window Styles

With so many styles and materials to choose from, some homeowners may feel overwhelmed when they shop for replacement windows. Let our Windows on Washington experts help you make the best, most informed decisions for your home and your budget.

Single and double‑hung windows in bright living room

Single & Double-Hung Windows

As two of the most common styles of windows, single and double-hung windows not only have an appealing aesthetic, but are easy to use and maintain.

Casement and awning windows

Casement & Awning Windows

Casement and awning windows are hinged on the outside, opening outward to give you ventilation in small or unusual spaces.

Large sliding windows

Sliding Windows

Similar to glass doors, sliding windows have two panes that slide horizontally. They give you the same ventilation, but use limited vertical space to help your rooms look taller and more open.

Bay and bow windows overlooking snowy landscape

Bay & Bow Windows

Bay and bow windows project outward to create a beautiful architectural focal point—and even add a bit of interior space. They’re an excellent way to boost curb appeal and home value.

Large picture window with panoramic mountain and lake view

Picture Windows

A picture window is the perfect way to frame your favorite view—whether it’s your garden or the city skyline. These fixed windows don’t open, but they bring in abundant natural light.

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.
Brick home with Starmark Evo 7500 replacement window and American flag

What Okna Window Is Right for My Home?

OKNA Windows offers several options to fit your design needs and budget. Here are a few of our favorites.

Living room featuring Starmark Evo replacement windows

OKNA Starmark Evo 7500

OKNA Starmark Evo 7500 Casement Windows offer beauty and functionality. The superior design makes it ideal for not only single windows but also for multiple assemblies such as 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

OKNA 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 myriad 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

OKNA Insul-Tec 500

The OKNA Insul-Tec 500 combines excellent craftsmanship with a traditional look and feel. This series offers all the benefits you have come to expect from vinyl windows, with a variety of options to make your home energy-efficient and enhance its beauty. Since all OKNA Windows 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
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Premier People

Honest. Client-focused. Experts in their field. That’s our team. When you want the job done right, come to the experts in home improvement contracting in Northern Virginia and suburban Maryland—Windows on Washington.

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Premier Products

In our two decades in business, we’ve carefully researched product brands so you don’t have to. Our windows, doors, siding, gutters, and roofing products provide the best quality and value for your budget, so you can enjoy your home improvements worry-free for many years to come.

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Premier Process

Our comprehensive Client Care Process will provide a stress-free and enjoyable home improvement experience by keeping you informed at every step in your project.

What we don't do

Our focus is on expert residential window, door, and roofing replacement and other exterior home improvement projects in the Northern Virginia and Maryland area, so there are certain types of projects we don’t take on.

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

Curious about your home improvement options?