Bow Windows

Thompson Creek’s® bow windows are different from a traditional bay window, combining four or more fixed or venting windows to create a larger aesthetic addition to your home. Our replacement bow window typically utilizes picture, double hung or casement windows to create a beautiful curve Bow windows protrude from the exterior of a home in a rounded bow shape, making for the perfect addition in your home. Quality and longevity are critical components of every Thompson Creek® window, so we design our bow windows with a durable frame and a glass package designed for maximum energy efficiency

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We want your bow window shopping experience to be simple. From selecting your windows, to choosing a professional to complete the job – it’s important you’re satisfied every step of the way. Thompson Creek can ensure the process from start to finish, and your new windows, to be perfect.

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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

Half – Half-screens let in more light through the uncovered pane, allowing you to open one sash of your window while giving you a pristine view through the other half.

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.

SDL – Windows used to be made of multiple small panes of glass. A simulated divided-lite (SDL) grid emulates a traditional divided window, with grid elements on the interior and exterior glass.

Speciality Grid Patterns

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 bow windows and bay windows?

Bay windows project outward using three panels arranged at sharp 30 or 45 degree angles, creating a flat center panel flanked by two angled sides. Bow windows use four to six panels arranged in a gentle curve, giving the exterior a rounded, arched profile rather than an angular one. Bay windows are more common in colonial and traditional home styles. Bow windows are typically associated with Victorian, Tudor, and more architecturally ornate designs where a curved exterior silhouette is part of the home’s original character.

How many panels does a bow window have?

Bow windows typically have four to six panels, which is what creates the gradual curve. A four-panel configuration produces a moderate arc suited to most standard openings. Five and six-panel units create a more pronounced curve and are used in larger openings where a more dramatic architectural statement is the goal. The greater number of panels is what distinguishes a bow window’s rounded profile from the angular look of a three-panel bay window.

Are bow windows more expensive than bay windows?

Bow windows are generally more expensive than bay windows because they require more panels and more precise manufacturing to achieve the curved profile. Installation is also more involved since each panel must be aligned to maintain the arc. The exact cost difference depends on the number of panels, the size of the opening, and the glass package selected. The best way to compare is through a free in-home estimate that accounts for the actual dimensions of your opening.

What types of homes are bow windows best suited for in Maryland, DC, and Virginia?

Bow windows are most common in Victorian, Tudor, and craftsman-style homes where a curved exterior profile is part of the original design. In the Mid-Atlantic region, they appear frequently in older neighborhoods throughout Maryland, Northern Virginia, and DC where late 19th and early 20th century homes are common. Replacing original wood bow windows in these homes with modern vinyl units preserves the architectural character of the exterior while eliminating drafts, failed seals, and rot that are typical in windows more than 20 years old.

Does installing a bow window require structural changes to my home?

Bow windows require a reinforced header above the opening to support the weight of the multi-panel unit as it extends outward from the wall. In most cases the existing rough opening can accommodate the new window with minimal structural work, though a structural assessment is part of any professional installation. A roof extension or soffit may also be needed to protect the top of the unit from weather exposure. Thompson Creek evaluates all structural requirements during the in-home consultation and custom-manufactures each bow window to fit the existing opening.

How much energy can I save when I replace my windows?

This depends on various factors, such as how many windows you currently have, the windows’ age and condition, wall and attic insulation, as well as how you use other items in your home that use energy. Thompson Creek windows exceed ENERGY STAR® standards and can help lower heating and cooling bills.