Roane County adopts the 2012 International Residential Code
By Glen Cofer, Building Official
Tennessee counties which have building codes must insure that
their codes are no older than seven years. In November, Roane County adopted the 2012 International Residential Code, replacing
the 2006 Code. Major changes to the code are:
· Work exempt from permit:
detached accessory structures used as tool and storage sheds, playhouses and similar uses, provided the floor areas do not
o Fences 7 feet or less in height,
o Decks not exceeding 200 square feet, no more than 30 inches above grade at any
point, not attached to a dwelling and not serving the exit door.
· Opening Protection:
o Openings from a private garage directly into a room for sleeping
purposes shall not be permitted.
openings between the garage and residence shall be equipped with a self-closing device.
and Wet Surfaces:
glass or glazing is a requirement for glass that is in the vicinity of bathtubs, hot tubs, spas, whirlpools and swimming pools.
Carbon Monoxide Alarms:
o For new
construction, an approved carbon monoxide alarm shall be installed immediately outside each bedroom in dwellings that have
fuel-fired appliances and or attached garages.
· Fire Protection of Floors:
assemblies that are engineered, less than 2x10, and do not have a fire-resistance rating shall be provided with a ½
inch (12.7mm) gypsum wallboard membrane, 5/8 inch (16mm) wood structural panel membrane, or equivalent on the underside of
the floor framing member.
o New span
tables are provided for No. 2 grade single headers.
· Mechanical Codes and Inspections have been added to the 2012 Code:
o Duct tightness
shall be tested and verified.
For more information call the Codes Enforcement Office at