Minimum Bedroom Window Size

Any bedroom needs to have a ceiling that is tall enough for people to walk comfortably under typically 7 feet high or greater.

Minimum bedroom window size. For lighting purposes a window s viewing size must be proportional to 8 of the room s floor area with an opening no less than 4 of the room s floor area for proper ventilation. Minimum window sill heights. According to the 2018 irc all windows that are more than 6 feet above the grade outside the window must have a bottom opening a minimum of 24 inches above the room s interior floor. Codes require new homes to have the proper size basement and bedroom egress windows.

The required opening size must be met by normal operation without requiring any tools or special knowledge for the window to open. When the sill height of an egress window is located below grade common for egress windows provided for a basement a window well must be provided. Multiply the width by the height of the opening to determine whether it s the required 5 7 sq. However either or both requirements may be reduced or waived if sufficient artificial light sources and mechanical ventilation are supplied.

However in order to be considered a bedroom the room must have heat a window large enough to escape through if you had to and a closet. There are more size dimensions to worry about here. So you can put a bed in a loft area with less than. At least half of the bedroom ceiling has to be at least 7 feet tall.

The trickiest part is the window egress. It must be at least 5 7 square feet that is at least 20 inches wide by 24 inches high with an opening no higher than 44 inches from the floor. To qualify a basement window as an egress you may also have to install window wells to enlarge windows and allow access. The area of a window well shall not be less than 9 square feet with a horizontal length width of no less than 36 inches.

If you add a closet it sounds like it could be a bedroom as long as the window to the exterior is an adequate size. For determining egress window sizes and placement the international building code holds that every bedroom must contain at least one egress window. If the sill is below ground the window itself will need larger dimensions 9 square feet. No matter where in the house a bedroom is it must meet all the safety regulations.

Also the irc mandates a minimum distance between the finished floor of the room and the window sill of 24 inches to prevent a child from falling out of an open window.