Minimum Attic Height

Summary of residential ceiling heights therefore in summary lets is recap the above information.

Minimum attic height.

The minimum ceiling height in rooms with sloped ceilings such as a finished attic space is 7 feet over at least 50 percent of the room area. Local codes may have stricter requirements so again be sure to check with your state and local regulations. Room area is this case is calculated as the total floor space with walls at least 5 feet tall. Living areas and hallways must have a ceiling height of 7 feet or more and bathrooms and laundry rooms must be at least 6 feet 8 inches tall.

Have a minimum opening width of at least 20 inches. If a room has a sloping ceiling which is common in attics at least 50 percent of the room area must have a 7 foot ceiling. Have a minimum opening height of at least 24 inches. Minimum vertical height of 30 inches measured from the top of the ceiling framing members to the bottom of the roof framing members.

Have a sill height of no more than 44 inches above the attic floor level. For new flat coffered tray or sloped ceilings go for a minimum of nine feet. At least 50 of the usable floor space should have a ceiling height of 7 5 ft. If the attic space is smaller than these specs then an access hatch is not required.

Here s how to choose a ceiling height that s right for you. The rest can be less than 7 feet. Attic furnace passageway minimum dimensions requirements. Attic area exceeds 30 square feet and.

30 inches high 762 mm 22 inches wide 559 mm 20 feet max length 6096 mm. To extend old eight foot ceilings in a remodel aim for. The minimum ceiling height to beams girders ducts or other obstructions shall be no less than 6 feet 4 inches from the finished floor. The rough framed opening.

In other words if your attic has 200 square feet over which the ceiling is at least 5 feet.