These openings not only allow mechanical and electrical contractors to.
Minimum required attic access.
These specs are per r807 1 of the international residential code irc and the residential edition of the florida building code fbc.
The access opening should be located in a hallway or other readily accessible location and minimum 22 x 30.
One is a minimum for any attic which has the required 30 headroom vertical height.
See the california mechanical code for access requirements where mechanical equipment is located in attics.
When the access is located in a ceiling minimum unobstructed headroom in the attic space shall be 30 inches 762 mm at some point above the access measured vertically from the bottom of ceiling framing members.
One way is by working within the home s existing footprint and converting the attic into living space.
See section m1305 1 3 for access requirements where mechanical equipment is located in attics.
Minimum vertical height of 30 inches measured from the top of the ceiling framing members to the bottom of the roof framing members.
The minimum size for an attic s access.
Attic ceiling attic access panel shall be fully attic drop down stair shall be fully interface gasketed and insulated gasketed and insulated energy star does not supersede code requirements mark d.
When the access is located in a ceiling minimum unobstructed headroom in the attic space shall be 30 inches 762 mm at some point above the access measured vertically from the bottom of ceiling framing members.
Attic access panels serve as an important safety and convenience feature in the home.
If the access is located in the ceiling the minimum unobstructed headrom above the opening must be 30 inches measured vertically at some point over the access.
If the attic space is smaller than these specs then an access hatch is not required.
The other is minimum for attics containing appliances and this latter one is more restrictive as it also includes where such dimensions are large enough to allow removal of the largest appliance meaning that the opening may actually be required to be.
According to the 2006 international residential code r807 1 attic access homes with combustible materials in the ceiling and roof construction must have an access to attic areas that exceeds 30 square feet and with a vertical height of 30 inches or greater.
Where the access is located in a ceiling minimum unobstructed headroom in the attic space shall be 30 inches 762 mm at some point above the access measured vertically from the bottom of ceiling framing members.