Casement Windows

Thompson Creek’s® vinyl casement window can be installed as a single window, paired with another casement (creating a twin structure) or leveraged in a bay window structure.

Our casement windows hinge at the side and open via an effortless crank operating system that allows for easy cleaning from inside your home. Built with an extremely durable frame and our most energy-efficient glass package, the casement window adds protection, functionality, and energy savings.

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Glass Package Options

Doublepane-glass – These windows feature two panes of standard low thermal emissivity, or Low-E, glass, separated by a spacer. The pocket between the two layers of glass is filled with argon gas and sealed. Argon gas is a inert gas that is non-toxic, colorless, and odorless gas that is heavier than air and displaces the air between the glass panes, acting as an insulator. All Thompson Creek windows start with the double pane glass package by default.

Triple pane windows – Triple Pane windows feature all the benefits of Double Pane windows with an added layer of thermal protection. An extra air pocket helps buffer temperature extremes. Three panes of Low-E glass add strength, energy efficiency, and durability. These windows are heavier than Double Pane windows, but offer more energy cost savings over time. The triple pane glass package is only available in our 7900 series premium windows.

Sound shield windows – Sound Shield is our proprietary noise abatement glass that filters out up to 35% more outside noise than our double pane glass package. We recommend Sound Shield for homes in loud areas with highway traffic, airports, trains or other outside disturbances. Sound Shield is available in awning, casement, picture windows, and our 7900 series premium double-hung and picture windows.

Obscure Glass – Available with double pane and triple pane glass packages. Obscure glass or “privacy glass” has a pattern embedded into its surface, making it difficult for to see through. Recommended uses: private offices, bathroom windows, private rooms.

Tempered Glass – Available with double pane, triple pane and Sound Shield glass packages. Tempered glass is 4-5 times stronger than conventional window glass. Tempered glass undergoes compression during its formation, meaning that it’s more break resistant. If it does break, it will break into smaller, less jagged pieces for your safety. Recommended uses: bathrooms, and windows less than 60 inches off the ground.

Screen Options

Full – Full-screens provide complete coverage for your window. This option allows you to partially open both sashes to better circulate air through your home, all while keeping bugs and leaves out.

(Optional) Trim Types

Modern – Trim helps define the style of your window while covering the seam between your window and the wall where it is installed. Our Modern-style trim offers clean lines and stark, 90 degree angles.

Colonial – Trim helps define the style of your window while covering the seam between your window and the wall where it is installed. Our Colonial-style trim offers stately curves redolent of classic woodworking.

(Optional) Grid Types

Flat – Our flat grids offer a sleek, contemporary take on the simulated divided-lite grid. Flat grids are installed between the glass layers, partitioning the window while allowing for easy cleaning.

Contoured – Our contoured grids give a sense of classical elegance with their stately curves and colonial feel. Contour grids are installed between the glass layers, partitioning the window while allowing for easy cleaning.

Speciality Grid Patterns

If you’re looking for something a little different, the French window grid can be a unique option to try. This style includes window grilles on the left and right side of the glass, split down the middle for a simple, classic look. It incorporates some of the design elements from both colonial and prairie window grids, making for a good compromise between the two.

Prairie window grids have been around a while, and many home designers think they’re making a comeback. Composed of four long grilles arranged around the perimeter of each half of the window, they allow you to get a clear view in and out, while elegantly framing the glass. They’re a good choice for anyone who appreciates an old-fashioned yet refined look.

A colonial grid pattern is probably what you think of when you imagine a classic window grid. Both the top and bottom half of the window are divided into six equal rectangles, making for a classic and versatile look that fits many styles. You can also consider going half-colonial, where the bottom half of the window is left undivided by grilles.

Colors

Custom – We can match most colors in the Sherwin Williams catalog.

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Frequently Asked Questions

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What is the difference between casement windows and double hung windows?

Casement windows are hinged on the side and swing outward with a crank handle, opening fully for maximum ventilation. Double hung windows slide up and down with two operable sashes. Casement windows create a tighter compression seal when closed, which improves insulation and reduces air infiltration compared to double hung windows. They also provide an unobstructed view since there is no horizontal rail dividing the glass.

Are casement windows more energy efficient than other window styles?

Casement windows are among the most energy efficient window styles available because of how they seal. When the crank closes the sash, it presses the frame tightly against the weatherstripping on all four sides, creating a compression seal with minimal air leakage. Sliding and double hung windows rely on friction seals, which allow more air infiltration over time. For homeowners prioritizing lower heating and cooling costs, casement windows are a strong option.

What rooms are casement windows best suited for?

Casement windows work well in rooms where ventilation is a priority and where a crank mechanism is practical. Kitchens are a common choice because casement windows can be installed above countertops where reaching a sliding sash would be difficult. They also perform well in bedrooms, bathrooms, and living rooms where an unobstructed view matters. They are not typically recommended for locations where the outward swing would interfere with a porch, walkway, or deck.

How much do replacement windows cost?

There is no set rate to determine the cost of your new replacement windows. We recommend requesting a free no obligation quote, which includes a consultation with one of our experts. At the end of that consultation, you will receive a written proposal with the finished price and any available financing options.

Are casement windows a good fit for older homes in Maryland, DC, and Virginia?

Casement windows are a popular replacement choice in the Mid-Atlantic region because many older homes in Maryland, DC, and Northern Virginia were originally built with casement-style windows. Replacing original wood casements with modern vinyl units maintains the architectural character of the home while significantly improving insulation and reducing drafts. Thompson Creek custom-manufactures each window to fit the existing opening, so no structural changes are required during installation.

What should Maryland and Virginia homeowners look for when replacing casement windows?

Homeowners in Maryland, DC, and Virginia should prioritize frame material, glass performance, and warranty terms. Vinyl frames resist moisture and do not require painting or staining, which matters in the region’s humid summers and cold winters. For glass, look for low-e coatings and argon gas fills, which reduce heat transfer without limiting natural light. A lifetime warranty that covers both the product and the installation labor is the strongest indicator that a manufacturer stands behind its work. Thompson Creek manufactures its own windows and provides a 50-year no-hassle warranty that transfers to new owners.