Explaining Ceiling Heights Under the International Building Code

The International Building Code or IBC is a set of advised international building codes. Whether a country accepts these building codes is up to them. There are many elements of a building which are outlined in the building codes, including the ceiling heights. The International Code Council (ICC), managers of the IBC, have suggested a number of different building codes including the International Residential Code or IRC.

The IRC has changed their building plan advice throughout the years. This can make understanding the information in the building codes very confusing. Search on the Internet to find the latest version of the code so that you can build your home to the highest standards.

2006 International Residential Code

The latest version of the residential code issued by the ICC is the 2006 International Residential Code. This has a number of regulations which set restrictions on the minimum size of rooms and the heights of ceilings. There has to be a minimum of one room in the property which is at least 120 sq feet in size.

All of the other rooms in the house except for the kitchen need to be a minimum of 70 sq feet. Anything like a hall, or bathroom is excluded from these size restrictions.

The 2006 International Residential Code is simply the latest version of this code, which is built upon the foundation of the old code bodies. It is important before beginning any project to confirm which version of the IRC, or previous code, is currently being used in your municipality.

Minimum Ceiling

The 2006 International Residential Code also dictates a minimum ceiling height requirement. Normally you need to have at least a 7 foot 6 inch ceiling height. If there are any beams in the ceiling then these can be 6 feet 6 inches above the floor as long as the beams are spaced at least 4 feet apart.

If you have any basements or other spaces which are not habitable then the ceiling can be 7 feet high as these are not considered as living spaces. When converting a non-habitable space into a room you will need to think about ceiling heights.

If a room has any sloped ceiling, then a minimum of half the ceiling must be at least 7 feet 6 inches high.

Bathroom

The ceiling height restrictions in a bathroom are different. The height needs to be a minimum of 6 feet 8 inches, but only where the fixtures are. There needs to be a large enough area for a showerhead which is at this height. This allows half bathrooms to be installed under the stairs as the entire room does not need to be the same height.

Recap

Just to recap the minimum ceiling heights suggested by the latest 2006 IRC state that any corridors and habitable spaces must a minimum be 7 feet 6 inches high. Any non-habitable areas such as kitchens, bathrooms, storage areas and laundry rooms can have heights of 7 feet.