What is the code minimum ceiling height in a bathroom?
Sunday, March 1, 2020
Bathrooms and toilet rooms (half-baths) must have a minimum ceiling height of 6 feet 8 inches. Where the ceiling is sloped, such as under a stairs, because the toilet fits in at the low side of the sloped ceiling under the stairs, the vertical clearance in front of it is the primary issue and there are exemptions. Here are the parameters you have to work within, based on the Residential Edition of the Florida Building Code (FBC R305) and the International Residential Code (IRC):
1) For a room with a sloped ceiling, at least half of the ceiling must be a minimum of 7-foot or higher, with no part of the required floor area lower than 5 foot.
2) There must be a minimum of 6-foot 8-inches height at the center of the front clearance area of the fixture. Minimum clearance in front of a toilet or sink is 21-inches, so the ceiling must be 6-foot 8-inches high at 10-1/2-inches away from the front of the toilet.
3) A shower or tub with a shower must have a ceiling height of 6 foot 8 inches over an area of not less than 30 inches by 30 inches at the showerhead.
4) Beams, girders, ducts, or other obstructions can project to within 6 foot 4 inches of the floor.
5) The ceiling height directly above the bathroom fixtures must be sufficient for them “to be used for its intended purpose.”
Laundry rooms also have a 6 foot 8 inch minimum ceiling height, while the rest of the habitable rooms in a house are minimum 7 foot ceilings.
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