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Casement Replacement Windows

Simply defined, casement windows are hinged on the side and swing out like a door, to the right or left, in a swinging motion. Casement windows comprise either a side-hung, top-hung, or occasionally bottom-hung sash or a combination of these types, sometimes with fixed panels on one or more sides of the sash.

This type of window is more common in newer homes and more typical in the western part of the United States. Once the most common form of domestic window before the introduction of the sash, casement windows feature a more contemporary design style, and allowing more light to enter the window, while also providing a larger view.

Casement windows are among the most energy-efficient, ventilating window style. Graceful styling and high-tech engineering make casements a popular choice. They’re the perfect choice above cabinets, counters, or areas where opening and closing require a reach to crank them outward and direct the fresh air indoors. They open easily for better ventilation, and shut tightly to ensure energy-efficiency.

Casement windows are one of many styles of both new and replacement windows. Replacement materials for windows include wood, vinyl, metals such as aluminum and steel, fiberglass and wood clad windows. While wood replacement windows are still the most popular option when replacing your home’s windows, vinyl replacement windows are very easy to maintain and will never require painting. Aluminum replacement windows are mostly used in commercial applications, but are also a good choice for basement windows.

Casement windows can be multi-paned or single-paned and is available from the following manufacturers; Andersen, Milgard, PGT and other window manufacturers.

Simply put, casement windows are hinged on the side and swing outward like a door to the right or left. Though they’re no longer the most popular window choice, casements are still a great option for homeowners that want to take full advantage of the breezes outside. Here we’ve gathered the basics, from costs to pros & cons, to help you decide if casement windows are the right fit for your home and budget.


The average cost of a casement window installation in your home (given that the opening is the exact size that it needs to be) is approximately $340 for a 2x4-foot window. The DIY route costs around $245 for tools and materials, though we never recommend installing windows without a professional.


They open easily for better ventilation, and close securely for energy efficiency.

With hook-shaped locks embedded into the frame, casements are extremely difficult to break in to.

No other window type can open as far as casement windows.


Opening outward, casements are more exposed to the elements, and certain sections can become weather-worn quickly.

Most come with mechanical parts prone to breakage.

With screens on the inside, casements tend to sustain more damage than windows with screens on the outside.


Casement windows can be a very durable option if the mechanical pieces are kept in good working order. Also, make sure that young children or pets don’t push on the inside screen, as this can cause unnecessary damage.


Because casement windows offer such a large opening, cleaning both the inside and outside of the glass is fairly easy and won’t require the use of a ladder. In order to keep the mechanical pieces operating properly, keep them lubricated and free from debris.

Common Questions and Answers

Can a casement window crank be fixed or does it need to be replaced completely?

It depends on the severity of the damage. You can begin by inspecting the old crank for wear. If it looks as if the gears are stripped or broken, then yes, it may be time for a replacement. Otherwise, it probably just needs to be cleared of debris.

Are there air conditioners that work for casement windows?

Yes, you can order air conditioners for casement windows. Before ordering, however, make sure that the installation kit works for the size of your window.


Dated all the way back to medieval times, casement windows are the earliest form of the movable window. Originally, six panes of glass made up the casement, but as glass improved, that was dropped to two panes. The invention of the sash window in the early 1900s made the casement window drop in popularity, but it has since regained its standing as one of the major window types.

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