Replace your existing aluminum single-pane window with an all-white vinyl window! When you're unsure about egress window regulations, a good place to start is your local codes administration office. Regulations vary from place to place and not all basement rooms need a legal egress window, but certainly the safety of your home and loved ones is a number one priority. Remember, all basement bedrooms, even bedroom-sized rooms with a closet, must have a regulation-size egress window, no matter what the blueprints may show.