What is the minimum ceiling height in a toilet room?
Tuesday, November 16, 2021
Toilet rooms 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 International Residential Code (IRC R305.1):
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.
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