Legal Attic Ceiling Height

More than 50 of the ceiling space should be on average a minimum height.

Legal attic ceiling height.

This leeway comes in handy to providing extra space above with the only caveat being that the slanting roof must have 2 3 of its height no less than the standard 2 2m. The 2012 international residential code requires an attic access opening for attics with an area greater than 30 square feet and a vertical height in excess of 30 inches. There is no height restriction under stairs. Room area is this case is calculated as the total floor space with walls at least 5 feet tall.

The minimum ceiling height specification for non habitable rooms is 2 1m. The rest can be less than 7 feet. 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. Showers and tubs with showerheads must have a 30 inch by 30 inch area that has a ceiling height of no less than 6 feet 8 inches at the showerhead.

For rooms with sloped ceilings at least 50 percent of the required floor area of the room must have a ceiling height of at least 7 feet 2134 mm and no portion of the required floor area may have a ceiling height of less than 5 feet 1524 mm. Attic spaces can be provided by having rooms with slanting roofs. Although it is common to be 2 4m in these areas. In an attic room with a sloping ceiling or projection below ceiling line or non habitable room or similar a height that does not unduly interfere with the proper functioning of the room or space.

The rough framed opening. Attics lofts and low ceilings. To prevent homeowners from creating living space that does not allow occupants to stand up. Examples of these are the bathroom hallway and garages etc.

Level ceilings must be at least 7 feet high and at least 6 feet 4 inches under beams ducts and other obstructions. 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. At least 50 of the usable floor space should have a ceiling height of 7 5 ft. Habitable attic space must satisfy the same requirements that govern rooms in the rest of the house.

If a room has a sloped ceiling at least one half of the finished floor area must have a ceiling height of at least 7 feet. In a stairway 2 0m measured vertically above the nosing line.