Attic Access Opening Dimensions

An attic access opening runs between the ceiling joists whenever possible.

Attic access opening dimensions.

Building codes 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. The vertical height shall be measured from the top of the ceiling framing members to the underside of the roof framing. Conversely some homes have smaller openings or hatches. Choose a stair that fits into the smallest of these measurements and is long enough for your ceiling height.

Built for safety this sturdy wood ladder makes it easy to access your attic with nine non slip steps and a convenient handrail for support while climbing. Minimum opening size 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. The rough opening cannot be less than 22 inches by 30 inches and must be located in a hallway or other readily accessible location. Standard openings are 22 5 x 54 but some homes have wider openings.

Airtight attic access ladder resources conservation technologies baltimore md 410 366 1146. The werner wood universal fit attic ladder features the werner wood universal fit attic ladder features a 250 lb. And standard ceiling openings of 22 5 in. Weight capacity designed to fit ceiling heights from 8 ft.

X 54 in the adjustable shoes allow the unit to fit ceiling heights from 8 ft. Designed for attic openings of 22 5 in. Tuesday january 28 2020. Measure the rough opening s width and length in three different spots at the top and bottom of the framing.

Advanced cylinder design allows for easy and smooth opening and closing of the lightweight aluminum designed attic ladder with a 375 lb. You may have to trim to fit. The 2007 california building code requires a minimum attic access opening of 20 inches by 30. The type of attic access determines the means you can install for entrance into the attic.

It s important to understand the opening size you have or will create to ensure you select the correct attic ladder product. What is the minimum size for attic access 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 vertical height shall be measured from the top of the ceiling framing members to the underside of the roof framing members. If the opening is located in a wall the 30 inch dimension must be vertical.