Does My Evansville Basement Need Them?
A finished basement can be one of the most cost-effective ways to add extra space to your Evansville home. It can be an a good area for bedrooms, a family room or a playroom.
As you get ready for your basement remodeling project, keep in mind you may need to install bigger windows. Egress windows are large openings that provide a secondary exit in an emergency. They can also add more natural light and make your basement feel more appealing.
Basement bedrooms and living spaces need to have egress windows. Living areas can be offices, TV rooms or workshops. This mandate also applies to unfinished basements.
Why Are Egress Windows Important?
Basement fires occur frequently, with firefighters being called to about 6,500 of them in the U.S. every year.
There’s not a lot of time to flee a house fire. It can become fatal in only 2 minutes and engulf a home within 5 minutes, according to the National Fire Protection Association.
When you only have minutes to get out, big egress windows are a crucial altermative exit.
Basement Windows in Older Homes May Be Too Small
Basements in older homes were not designed to be sleeping or living areas. This is especially true for homes made before World War II.
Homeowners at that time used this type of basement for utility space, laundry and storage.
Depending on its age, your home may have been built before today’s egress window requirements. Or it may have windows with a shorter opening.
If you have an older home, there’s a good likelihood it has skinny windows in the basement. Also referred to as hopper windows, these above-ground windows open inward to provide fresh air.
But these windows are small—too small for an adult or fully-geared first responder to climb through.
How to Measure Your Basement Windows
Unsure if your current basement windows meet modern requirements? All you need is a tape measure.
- Open the window fully.
- Measure the width and height of the opening.
- Multiply the width by the height.
Does your measurement match the required 821 square inches—or 5.7 square feet? If not, you need to have bigger windows installed.
Requirements for Egress Windows in Basements
Building codes mandate the size of basement windows. This allows for a fast exit in an emergency.
According to the International Residential Code, basement windows must have:
- An opening width of at least 20 inches.
- An opening height of at least 24 inches.
- A net clear opening of at least 821 square inches—or 5.7 square feet.
- A sill no more than 44 inches off the floor.
What if My Basement Windows are Below Ground Level?
If your basement windows are below ground level, you will need to have a well dug at the base of the window frame. This well should be at least 36 inches wide and 36 inches long. If the well is more than 44 inches deep, it will need an attached ladder or steps.
Using timber or concrete blocks in the well makes it simple to put in steps. Plus, you can add a couple small landscaping features, like crushed rock or potted plant.
It's OK for basement windows to be under a deck or porch. But there needs to be enough room for an average-sized adult to escape.
There should be at least 36 inches between the top of the window well and the bottom of the deck or porch joists.
Other Requirements for Egress Windows in Basements
Because basement windows are an escape route, they must open from the inside. Any screens, grilles or bars need to be taken off from the inside without keys or tools.
It’s also important that basement windows can completely open. The window sash shouldn’t impede the opening. This enables your family to quickly exit—or first responders to quickly enter.
Local requirements for basement windows may be different. Check with Evansville building officials to learn more about area guidelines.
Choosing Basement Egress Windows
There are several styles of windows that work well for basements and satisfy building code requirements.
Casement windows are a good option for less wall space. These windows work like a door, swinging free to provide a spacious opening.
Casement windows open by using a handle. Pella® casement windows use a crank that folds away. That way, the crank won't interfere with curtains.
This window must have at least 8 square feet of net opening.
Sliding windows are great for adding more light to large basements. These windows have to be bigger, because the opening is only half as wide as the window. This is due to the sash, which slides horizontally.
Sliding windows open by shifting the sash from left to right. Some Pella models include extra-durable tandem nylon rollers. These rollers give even smoother operation.
This window must have at least 16 square feet of net opening.
Talk with the Professionals at Pella of Evansville
Basement escape windows are an essential for downstairs living spaces. They can be a lifesaving tool in an emergency. Include our professionals at Pella of Evansville. We can help when you're redoing your basement.
We can also help you find the right window that meets your project, budget and local egress requirements.