Does My Traverse City Basement Need Them?
A finished basement can be one of the most cost-effective ways to add more space to your Traverse City home. It can be an a great area for bedrooms, a family room or a playroom.
As you prepare for your basement remodeling project, take into account that you may need to install larger windows. Egress windows are large openings that offer an escape route in an emergency. They can also add more natural light and make your basement feel more welcoming.
Basement bedrooms and living spaces must have egress windows. Living spaces can be offices, TV rooms or workshops. This rule also involves unfinished basements.
Why Are Egress Windows Important?
Basement fires are common, with firefighters being called to about 6,500 of them in the U.S. annually.
Time is limited to flee a house fire. It can become deadly in as little as 2 minutes and overwhelm a home within 5 minutes, according to the National Fire Protection Association.
When you only have minutes to escape, correctly sized egress windows are an important substitute exit.
Basement Windows in Older Homes May Be Too Small
Basements in older homes were not created to be sleeping or living areas. This is especially true for homes made before World War II.
Homeowners back then used this kind of basement for utility space, laundry and storage.
Depending on its age, your home may predate up-to-date egress window requirements. Or it may have windows with a shorter opening.
If you live in an older home, there’s a good likelihood it has narrow windows in the basement. Also referred to as hopper windows, these above-ground windows open inward to circulate fresh air.
But these windows are small—too small for an adult or fully-outfitted first responder to enter through.
How to Measure Your Basement Windows
Unsure if your current basement windows meet present-day 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 taller and wider 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 a fixed ladder or steps.
Using timber or concrete blocks in the well makes it simple to add steps. Plus, you can include several small landscaping features, like crushed rock or potted plant.
It's acceptable for basement windows to be under a deck or porch. But there needs to be enough space for an average-sized adult to get out.
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 essential that basement windows can open entirely. The window sash shouldn’t obstruct the opening. This enables your family to quickly exit—or first responders to quickly enter.
Local requirements for basement windows may vary. Check with Traverse City building officials to learn more about area guidelines.
Choosing Basement Egress Windows
There are several styles of windows that work well for basements and meet building code requirements.
Casement windows are a good option for limited wall space. These windows work like a door, swinging free to provide a wide opening.
Casement windows open by using a handle. Pella® casement windows use a crank that folds away. That way, the crank won't disrupt window treatments.
This window must have at least 8 square feet of net opening.
Sliding windows are great for adding more light to big 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 have extra-durable tandem nylon rollers. These rollers give even more effortless operation.
This window must have at least 16 square feet of net opening.
Talk with the Professionals at Pella of Traverse City
Basement escape windows are a must-have for downstairs living spaces. They can be lifesaving equipment in an emergency. Include our professionals at Pella of Traverse City. We can help when you're redoing your basement.
We can also help you find the right window that fits your project, budget and local egress requirements.