The vertical height shall be measured from the top of the ceiling framing members to the underside of the roof framing members.
Minimum required attic access.
The rough framed opening must be a minimum of 22 inches by 30 inches.
Attic area exceeds 30 square feet and.
Attic stairs don t leave a hole in the ceiling attic hatch one inexpensive and common type of access is referred to as a scuttle hole or attic hatch which is simply a removable portion of the ceiling that allows access to the attic above.
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.
The clear access opening dimensions shall be a minimum of 20 inches by 30 inches 508 mm by 762 mm and large enough to allow removal of the largest appliance.
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.
What is the minimum size for an attic opening.
An attic hatch is commonly located in a closet or main hallway.
The minimum opening for the attic access should be 22 inches by 30.
If there is space for it consider the size of a drop down ladder unit which is more useful than an opening that requires a ladder.
The passageway and level service space are not required where the appliance is capable of being serviced.
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.