An installed egress window well must be installed to meet all the regulations outlined by the Ontario building code. That means that both the window well and the cover on top of it should not prevent the escape of a person either by being too narrow or obstructing passage in some other way.

The Ontario building code outlines a number of rules relating to the construction and operation of egress window wells:

• Where an egress window opens into a window well, the clearance between the window and the well will be no smaller than 22 inches (550mm)
• Where a window sash opens into the egress opening, it will open in a way that will not reduce the size of the required opening (22 inches) in the event of an emergency
• If the window well has a cover, that cover should be openable from inside the window well without the use of any special tools or expertise

In some cases, it is also advisable to install a ladder inside the window well to allow children and the elderly to safely exit from deeper window wells.

Installing window wells often requires digging installing proper drainage to allow for the passage of water. There are many horror stories of improper window well installation that can cause severe flooding and foundation damage. The consequences of a bad installation may not be immediately obvious but can become quickly apparent in the event of heavy rain or melting snow. Below are some mistakes you should avoid when installing an egress window well.

Improperly sized wells: Wells that are too short or too narrow will cause water and dirt to enter the well and block drainage. Window wells come in all shapes and sizes so don’t use one just because it’s available. Using the appropriate size and shape of the well can save you a lot of trouble in the long run. Be sure to measure your window properly and consult our experts before installation.

Clogged gravel: Gravel is usually placed at the bottom of the well to allow water to drain while blocking sand dirt. Over time, the gravel can become clogged and prevent water from passing through. It’s important to routinely inspect the gravel, rinse away the dirt as needed or simply replace it.

Loose window well: Over time, as the ground around your house freezes and thaws, the window well may become loose and come away from the basement wall. This allows dirt to enter the well and block drainage. A loose-fitting window well has to be dug out and reattached to the house. It is important to keep the window well in a tight fit against the wall.  

Slow drainage: To inspect the quality of drainage in your window well, get a hose and run water into the well. The water should drain relatively fast and now come near the bottom of your window. If the water lingers you may have a drainage issue and should be taken care of before major rainfall causes basement flooding.

Gas lines: Starting to dig before knowing where your gas lines are can cause costly delays and serious accidents. This can be easily avoided by calling the Ontario One Call, a great resource for information about buried pipes and lines around your property.