How Big Should Basement Windows Be? Everything You Need to Know

Basement windows can provide natural light and ventilation to your basement, but what is the right size for them? In this guide, we will discuss everything you need to know about basement window sizes.

We will also provide tips on how to choose the right windows for your basement. So, if you are considering adding basement windows to your home, read on.

What Factors Influence the Size of Basement Windows?

There are a few factors that can influence the size of basement windows, including:

  • The height of the basement ceiling - If your basement ceiling is higher than average, you may be able to get away with larger windows.
  • The amount of natural light desired - A window that lets in a lot of natural light might be larger than one that is mostly for ventilation.
  • The purpose of the window - This is probably the most important factor. If the window is mainly for aesthetics, then it can be smaller. However, if it's going to be used for egress in case of an emergency, then it needs to meet certain size requirements.
  • Basement window placement - The placement of your windows can also affect their size. If they're placed high on the wall, they might need to be smaller than if they were placed low.

As you can see, a few factors go into deciding how big basement windows should be. It’s important to consider all of these when making your decision.

What are the Benefits of Having a Big Basement Windows?

Many people might not think that the size of their basement windows matters, but there are actually several benefits to having large basement windows. Here are some of those aforementioned benefits:

Increased natural light

One of the biggest benefits of having large basement windows is that it allows for increased natural light. This is especially beneficial if you spend a lot of time in your basement, or if you are using your basement as a home office.

Improved ventilation

Smaller windows will limit the amount of fresh air entering your basement. This is important because basements are known for being damp and musty. By having large basement windows, you can improve the ventilation in your basement, and help keep it feeling fresh and clean.

Increased home value

If you are ever thinking about selling your home, having large windows can actually increase the value of your home. This is because potential buyers will be able to see the basement as livable space, and not just some dark, dreary place that is only used for storage.

Safety

In the event of a fire, large windows will provide you with a quick and easy escape route. Small windows can be easily blocked by furniture or other items in the room, making it difficult to get out.

As you can see, there are many benefits to having big basement windows. If you are thinking about window replacement, or if you are planning on finishing your basement, be sure to consider increasing the size of your windows. It could make all the difference in how you use and enjoy your basement space.

What Are the Building Codes for Egress Window Requirements?

The International Residential Code (IRC) sets minimum requirements for egress windows in habitable rooms. To meet the IRC’s definition of an egress window, a window must have a clear opening of at least five square feet, be at least 20 inches high, be no more than 44 inches above the floor, and have a minimum net clear opening of at least 5.7 square feet.

 

The window must also be operational, meaning it can be opened from the inside without the use of tools. There are also a few other requirements that must be met in order for a window to be considered an egress window. These requirements include:

A window well

This is a depressed area around the window that allows for emergency escape and access. The well must be large enough to accommodate the fully opened window, and it must be easy to get in and out of.

A ladder

If the window well is too deep to reach from the ground, then a ladder must be provided. The ladder must be easy to usel, and must be able to support the weight of a person.

Complete opening

The window must be able to open fully so that a person can fit through the opening. If basement egress windows have bars or grates, they must be removable from the inside so that the window can be used for emergency escape and rescue openings.

These are the minimum requirements that must be met in order for a window to be considered a basement egress window. However, it is important to note that these requirements may vary from state to state. Be sure to check with your local building code office to see what the requirements are in your area.

Different Types of Basement Windows

You can choose from a few different types of basement windows. Here is a quick overview of the most popular options:

1. Slider basement windows

Slider windows are one of the most popular types of basement windows. They offer a wide range of sizes and styles, and they can be installed in almost any type of basement. Sliding windows are window panels that open horizontally by sliding along a track. These windows are a great option for basements because they don’t take up as much space as other types of windows, and they let in a lot of natural light. Most slider windows have two panels, but single-panel options are also available.

2. Casement basement windows

Casement windows are easy to operate and provide a clear view. Most casement windows have a glass area of about 12 square feet. It is important to have a clear view when operating these windows.

3. Hopper basement windows

They are fully operable and open from the bottom, which makes them easy to clean. Most hopper windows are about 18-22 inches wide, and 27-30 inches tall. Hopper basement window comes in a variety of privacy glass options.

4. Awning basement windows

This type of window is hinged at the top, and opens outward. They are a good option if your basement is below ground level, as they can provide ventilation even when it’s raining. Awning windows are also ideal if you have limited living space, as they open without protruding into your room.

5. Fixed basement windows

A fixed basement window is a window that cannot be opened, and is usually installed at ground level or below. The average size of a fixed basement window is about 18 to 24 inches wide, and 27 to 30 inches tall.

6. Casement/Crank basement windows

Cement or crank-out basement windows are a great option if you have a lot of wall space to work with. These types of windows open outward, so they can be placed close to your floor without sacrificing any viewing space. The habitable space in your basement will increase significantly with the addition of these windows.

7. Glass block basement windows

This window prioritizes the basement’s privacy and security, while still allowing natural light to enter the room. They are usually made of solid, tempered glass that is difficult to break through. A glass block window is a good choice if your basement is located in a high-traffic or crime-ridden area.

8. Single-hung basement windows

These windows have a bottom sash that opens and closes, while the top sash is stationary. Single-hung windows are great if you want to maximize airflow while still providing some security.

9. Double-hung basement windows

This type of window has two sashes that open and close independently. The bottom sash opens to let in the fresh air, while the top sash provides ventilation even when it’s raining.

How to Choose the Right Basement Window?

Some people might think that any kind of window would do for their basement as long as it brings in light. However, there’s more to consider when choosing windows for your basement than just the amount of light they let in. You also have to take into account things like ventilation, emergency exits, and even the look of the window itself.

 

Here are a few things to keep in mind when choosing windows for your basement:

  • Energy efficiency above all else - Look for windows with a high Energy Star rating. This will ensure that your windows are well-insulated, and won’t let heat escape from your home in the winter or let hot air in during the summer. The window should be energy star certified, and have a U-factor of .30 or lower.
  • Functionality - Make sure the windows you choose can be opened and closed easily. In case of an emergency, you want to be able to open the windows quickly and get out of your basement. If the windows are difficult to open, it could delay your escape and put you in danger.
  • Airflow - There's no point in having windows in your basement if they don’t allow for any airflow. If your windows are too small, they won't be able to provide enough ventilation. Choose windows that can be opened at least six inches to allow for proper airflow.

Frequently Asked Questions

1

How can I make a basement window look bigger?

You can use a few design tricks to make a basement window look bigger.

You can hang curtains higher than the window to make the ceilings appear taller, and the windows seem larger. You can also use mirrors to reflect light and make the space feel brighter and more open.

2

How many windows does a basement bedroom need?

It depends on the room size and how much natural light you want to bring in. One or two windows should suffice if your basement is on the smaller side. If you have a larger space, you may want to consider adding more windows to brighten things up. You can also install bigger windows to let in more light and fresh air.

As you can see, there are a few things to consider when deciding how big your basement windows should be. Ultimately, the decision comes down to personal preference, and what will work best for your space. If you consider all of these factors, you’ll be sure to find the perfect size window for your basement.