16 georgia is bringing back a requirement that was previously an amendment to the 2006 irc which will now require attics containing appliances to be accessible by pull down stairs or other permanent stairs.
Irc attic access.
R 38 shall be deemed to satisfy the requirement for r 49 wherever the full height of uncompressed r 38 insulation extends over the wall top plate at the eaves.
The florida building code fbc and international residential code irc both require a minimum of one attic access opening for homes with combustible such as wood roof construction if the attic space meets these two criteria.
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.
Wednesday july 4 2018.
Section r807 attic access r807 1 attic access.
However there is an exception.
The rough framed opening.
Buildings with combustible ceiling or roof construction shall have an attic access opening to attic areas that have a vertical height of 30 inches 762 mm or greater over an area of not less than 30 square feet 2 8 m 2.
The 2015 irc requires r 49 insulation for ceilings with attic spaces.
R807 1 1 attic service access.
Pa302 1 ceilings with attic spaces n1102 2 1 r402 2 1.
If no equipment then the basic requirement is 22 by 30 rough framed.
The vertical height shall be measured from the top of the ceiling framing members to the underside of the roof framing members.
Buildings with combustible ceiling or roof construction shall have an attic access opening to atticareas that exceed 30 square feet 2 8 m2 and that have a vertical height of 30 inches 762 mm or greater over an area of not less than 30 square feet.
Buildings with combustible ceiling or roof construction shall have an attic access opening to attic areas that exceed 30 square feet 2 8m squared and have a vertical height of 30 inches 762 mm or more.
Attic area exceeds 30 square feet and.
2006 irc residential construction.
Access doors from conditioned and doors access doors from conditioned spaces to unconditioned spaces g p e g attics and crawl spaces shall be weatherstripped and insulated to a level equivalent to the insulation on the surrounding surfaces.
Minimum vertical height of 30 inches measured from the top of the ceiling framing members to the bottom of the roof framing members.
There you ll see that an access opening is all that is specified not stairs.
You will also see that for smaller attic areas no access is required whatsoever in my view some access to all such limited space areas is desirable to permit visual inspection for leaks or damage pest control etc.