Attic Access Opening Dimensions

Tuesday january 28 2020.

Attic access opening dimensions.

Buildings with combustible ceiling or roof construction shall have an attic access opening to attic areas that exceed 30 square feet 2 8 m2 and have a vertical height of 30 inches 762 mm or greater. It s important to understand the opening size you have or will create to ensure you select the correct attic ladder product. The vertical height shall be measured from the top of the ceiling framing members to the underside of the roof framing. Designed for attic openings of 22 5 in.

Standard openings are 22 5 x 54 but some homes have wider openings. 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. Weight capacity designed to fit ceiling heights from 8 ft. Airtight attic access ladder resources conservation technologies baltimore md 410 366 1146.

X 54 in the adjustable shoes allow the unit to fit ceiling heights from 8 ft. What is the minimum size for attic access opening. The type of attic access determines the means you can install for entrance into the attic. The rough opening cannot be less than 22 inches by 30 inches and must be located in a hallway or other readily accessible location.

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. If the opening is located in a wall the 30 inch dimension must be vertical. Advanced cylinder design allows for easy and smooth opening and closing of the lightweight aluminum designed attic ladder with a 375 lb. The werner wood universal fit attic ladder features the werner wood universal fit attic ladder features a 250 lb.

Choose a stair that fits into the smallest of these measurements and is long enough for your ceiling height. If the access is located in the ceiling the minimum. Measure the rough opening s width and length in three different spots at the top and bottom of the framing. An attic access opening runs between the ceiling joists whenever possible.

Measure the rough opening in your ceiling both the width and length. And standard ceiling openings of 22 5 in. You may have to trim to fit. Conversely some homes have smaller openings or hatches.