What Are Jalousie Windows? Pros and Cons

While Jalousie windows might not be a homeowner’s first choice for a window type when they are planning a home makeover, these quirky, slatted windows have a lot to offer. The Jalousie window originally gained traction in areas with a tropical climate because the design allowed you to control light and airflow—a perfect addition for those warm, stuffy summer days where you want the air to come in while keeping the sun at bay. 

With their adjustable blinds and sleek look, jalousie windows are a combination of style and function. In this guide, we will take a closer look at the factors that make jalousie windows a unique addition to your property. 

What is a Jalousie Window?

The Jalousie window is not a typical window. It’s a window that’s made up of horizontal slats of glass or acrylic, which you adjust to control the amount of air and light coming into a room. Typically, these slats are operated by a crank, lever, or otherwise, which allows easy handling of ventilation and privacy.

One of the major benefits of jalousie windows is the way in which they allow for fresh air while shutting out the direct sun—ideal for places with warmer climates, where the airflow is incredibly important. Each slat can be adjusted individually to allow just the right amount of breeze in, so they’re perfect for creating a comfortable environment without letting too much light in.

Modern jalousie windows are available in modern materials and mechanisms that commonly provide for increased insulation and durability in modern homes. Today many homeowners are choosing Milgard jalousie windows due to their quality construction and sleek design. These windows not only offer functionality but also add a distinct style to any space, combining the best of old-school charm with contemporary innovation. Jalousie windows can be a great option for homes of all types whether you’re looking for better airflow, light control, or a whole new look.

modern jalousie window


How to Open and Close Jalousie Windows

A simple step-by-step guide on how to open and close jalousie or louvered windows whether they are manually operated or have modern motorized mechanisms.


Manual Jalousie Windows:

  • Find the crank or lever used to adjust the slats. It usually sits at the bottom or side of the window frame.
  • Go clockwise (or pull the lever). This will tilt the slats upward, allowing fresh air to enter.
  • Turn the crank until you get the angle you want for best airflow or light. The more you turn, the wider the slats open.
  • Turn the Crank (or push the lever) in a counterclockwise direction. This will tilt the slats downward, stacking them tightly together and blocking out the elements.
  • Keep turning until the slats are fully closed, creating a tight seal.
  • Each slat can independently adjust the amount of air, light or privacy. A slight turn can make a significant difference.

Manual jalousie window


For Motorized Jalousie Windows:

  • Find the button, remote, or smart device linked to the window’s motorized system. There are some windows that are controllable on a smartphone app as well.
  • Or you can press the “open” button and send the signal with your smart device. The slats will automatically adjust to the open position, providing ventilation.
  • Press the “close” button or issue a command via your app. The window will be sealed tightly by the slats closing automatically.
  • Typically you can fine-tune the slats with buttons or app settings to achieve your desired level of airflow, light and privacy.


How to Clean Jalousie Windows

Here’s a simple, easy-to-follow guide for cleaning jalousie window parts:

Step 1: Take a mildly damp microfiber cloth

Step 2: Spray soapy water (use dish soap) or a glass cleaner on both sides of the window slats.

Step 3: Clean the slats with a downward and repeated motion.

Step 4: Clean with a dry yet clean cloth so no watermarks appear.

Watch this easy step-by-step guide to get your jalousie windows sparkling clean:


Pros and Cons of Jalousie Windows

Pros:

  • Effective Ventilation and Light Control:

Jalousie windows are excellent at allowing airflow and light regulation. Good for areas that need frequent ventilation, the slats can be adjusted to let in as much or as little air and light as needed.

  • Compact and Space-Saving Design:

Due to their unique design, they are space efficient, especially if you live in a small place and need a window that doesn’t use up much room but still brings in the light and the air.

  • Good Privacy Options:

Jalousie windows have slats that can be adjusted to give you more privacy control. You can tilt the slats to block the view from outside while still letting air flow through, making them ideal for more private spaces.

Privacy in jalousie window


Cons:

  • Can Be Prone to Drafts and Water Leaks if Not Properly Sealed:

This is one drawback if the windows aren’t sealed properly, drafts and water leaks can become an issue, especially during bad weather.

  • More Difficult to Clean Than Traditional Window Types:

Jalousie windows are a bit of a chore to clean because each slat has to be cleaned separately. It’s more time-consuming than cleaning a regular window.

  • Can Be Outdated in Modern Home Designs:

Jalousie windows are stylish but not suitable for modern homes and tend to be considered old-fashioned in modern window designs.

If you’re wondering how much it costs to replace a window, the price can vary depending on the type of window and material you choose.


Conclusion

As a unique combination of style, functionality, and versatility, jalousie windows are a great choice for those wanting efficient ventilation, light control, and privacy. They’re not the first choice for every home, but their slatted design and air and light regulating ability make them ideal for warmer climates and more traditional homes. 

If you’re considering upgrading your windows and are curious about what other options you might have, there’s always the Top 10 custom window manufacturers in 2025 to look into for the most modern and innovative window styles. 

Quality is our only standard at MANNLEE. With our custom window and door solutions, we bring the light of life to your space with designs that are beautiful and last.

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