Jalousie windows use horizontal slats that can be adjusted to open or close simultaneously. They were commonly installed between 1900 and 1970, before air conditioning was used in a majority of homes. Jalousie windows provide excellent ventilation, even when it’s raining, while also offering better light control. However, due to their design, they fall significantly behind in energy efficiency, security, and practicality compared to modern types of windows.
If you’re thinking about replacing your jalousie windows or want to install them in your home, I’ve covered everything you need to know about this unique type of window below.
Contact a local window manufacturer to see if they have options for jalousie windows in your area.
What Jalousie Windows Are
Jalousie windows are traditionally made of glass slats arranged to overlap, similar to the slats of window blinds. The slats can be opened and closed, allowing in fresh air and an unobstructed view of the outside. While glass slats are the most common option for jalousie windows, some use aluminum, plastic, or wood instead.
Jalousie windows are also referred to as louvered windows, as the slats are louvers. However, whether jalousie and louvered windows are considered the same thing depends on who you’re talking to. Some argue that louvered windows only refer to windows with fixed slats and that jalousie windows are different as the slats move.
Jalousie windows are more common for rooms such as sunrooms and enclosed porches where additional ventilation and light are important. They were a more-popular option before air conditioners became prevalent, but they still can be found in warmer climates where increased ventilation is important. For example, they’re often seen in Hawaii.
How Do Jalousie Windows Work?
Jalousie windows have horizontal slats connected to mechanisms inside the frame. They have a hand crank or lever, usually found on the side of the window. When the lever is turned, the angle of the slats moves upward or downward to open or close the window. This functionality provides ventilation and light control. Jalousies can be kept open when it’s raining without letting rain inside.
However, the slats are very easy to break. Individuals outside the home can also reach in through the window to remove the slats. As a result, jalousie windows are not the most secure option.
Benefits and Disadvantages of Jalousie Windows
When you first look at jalousie windows, they almost resemble a mix between a picture window and a blind. These windows are popular in warmer coastal climates where natural ventilation is so important. However, due to maintenance, security, and energy efficiency concerns, jalousie windows are not often used in new homes or renovations.
Benefits of Jalousie Windows
The most important benefits of jalousie windows include better airflow, quick and easy changing of broken glass panes, and improved functionality in the rain.
Improved Air Flow and Ventilation
When the horizontal slats on a jalousie window are opened, fresh air can enter the home, improving the space’s ventilation. In fact, the jalousie is a top choice for better airflow. This makes it an appealing option for warmer climates where better ventilation is a must-have.
Cheaper To Replace Slats
The glass slats are easy to remove and replace. If you notice a crack or scratch on one of the panes, it can be quickly replaced. With sliding windows or double-hung windows, you can get stuck having to replace an entire window instead of just one part.
Blocks Rain Even When Open
Like awning windows, when jalousie windows are open, they’ll keep water from entering the house. Many homeowners like to leave windows open in the rain, but when water gets in, it can damage floors and trim around the window frame. Jalousies’ unique design allows you to enjoy the rain and improved ventilation at the same time.
Disadvantages of Jalousie Windows
It’s not as easy to find jalousie windows as it once was. Due to their downsides, they’re simply not used in new construction or renovations. They’ve also gone out of style, having been popular in the mid-20th century. Here are some of the reasons it’s difficult to find jalousie windows these days:
Security Concerns
Window experts rarely recommend jalousie windows as they’re one of the least secure and least durable window options. These windows are hard to lock and individuals outside the home can reach between the slats to remove them. The slats are also fragile and can be easily broken. As a result, it’s easier for someone to break into a home that uses jalousie windows. In fact, they usually fail to meet modern security building codes.
Some types of modern jalousie windows have been designed with security in mind. However, since jalousie windows are already difficult to find, these safer options can be even harder to track down.
Poor Energy Efficiency
Energy efficiency is often a top concern for many homeowners, and jalousies are one of the least efficient types of windows out there. Before air conditioners became common in homes, the additional ventilation jalousies provided could cool down rooms.
However, the slats don’t create a proper seal, which means hot air is let in during the summer and cold air during the winter. Your heating, ventilation, and air conditioning (HVAC) system is left to pick up the slack, increasing your utility bills. Modern windows are more often designed with energy efficiency in mind, and jalousie windows can’t compete with ENERGY STAR-rated window replacement options.
Many Moving Parts
Over time, the regular use of your jalousie windows can create a lot of wear and tear on the mechanisms that move the slats. The need for frequent maintenance and repairs is a top complaint. They’re also cumbersome to clean, as every slat needs to be cleaned individually. Instead, homeowners should consider vinyl window replacements, as they’re more stable and durable compared to jalousie windows.
How Much Do Jalousie Windows Cost?
Jalousie windows usually cost anywhere from $170 to $380* for a standard-sized window. However, depending on the size of the window you choose, there could be some variation in this pricing. The larger the window, the more expensive it will be. Also, labor prices can depend on the size and type of window and your location.
*Costs in this article are sourced from contractor estimates used by Angi.
Our Top Pick for Jalousie Windows
Jalousie windows are not a standard option offered by most window manufacturers and installers. Due to security, durability, and energy efficiency concerns, they’re not often used in new home construction or renovation projects. Many homeowners also consider them less visually appealing compared to other, more-modern window options.
As a result, you might have to shop around a bit before you find someone that makes or sells jalousie windows. However, due to the concerns detailed above, window companies will usually try to talk you out of installing them in your home. There are several types of windows that offer the same benefits of jalousie windows, without the downsides. For example, awning windows can be a more durable, energy-efficient, and secure option.
However, if you’re completely sold on jalousie windows, one option is to consider a custom window for a company like Champion.
You can also contact any of the providers below to see if they can provide jalousie windows installation.
Should You Install Jalousie Windows In Your Home?
Jalousie windows are a unique solution and are still commonly seen in some areas, such as Hawaii. They can be an option if you’re looking for something unique in an office or bedroom that would benefit from better ventilation. However, their poor energy efficiency, durability, and security is concerning, and window manufacturers and installers don’t usually recommend or sell them. This can make jalousie windows difficult to find.
Overall, most homeowners are moving away from jalousie windows due to their significant downsides and opting for other types of replacement windows. Working with a window replacement installation company can help you reveal the best windows for your home, energy bills, and security.
Frequently Asked Questions About Jalousie Windows
What are jalousie windows made of?
Jalousie windows are often made with glass, wood, glass, acrylic, or metal panels. Glass is the best option if you want better visibility. However, for a modern look, many homeowners go with a wood style.
Are jalousie windows in style?
Jalousie windows were commonly used between 1900 and 1970, but today they’re often considered less visually appealing and outdated compared to modern window designs. They’ve also fallen out of favor due to security and energy efficiency concerns. However, they’re still a common option in Hawaii thanks to their ability to enhance ventilation.
What are some alternatives to jalousie windows?
Common alternatives to jalousie windows include casement windows, sliding windows, and awning windows. They offer many of the same benefits that come with jalousie options without the drawbacks. These alternatives also tend to be more visually appealing with modern architecture.
