What is the difference between an egress window and a standard basement window?

A standard basement window and an egress window serve different purposes, and the key distinction is whether the window opening meets the minimum code dimensions for emergency exit.

Standard basement windows are typically small, often glass block or narrow slider windows, designed to let in light and air. They do not need to meet egress dimensions and often have net clear openings of less than 2 to 3 square feet. A standard window can remain in place in storage rooms, utility areas, and non-sleeping rooms without triggering egress requirements.

An egress window is specifically designed or selected to meet the IRC R310 minimums: 5.7 square feet net clear area, at least 24 inches high, at least 20 inches wide, and sill no higher than 44 inches from the floor. It must be operable by a single person from the inside without special tools or knowledge.

When converting basement space to a bedroom, the existing window almost always needs to be replaced with an egress-compliant unit, which requires cutting a larger opening in the foundation wall.

Scaldino Basement Solutions handles the full process. Contact us to assess your basement windows against code.