Minimum Attic Hatch Size

Options the attic may be accessed through a scuttle door or attic hatch usually located in a closet or main hallway.

Minimum attic hatch size.

Access 1 everyattic or roof space shall be provided with an access hatch where the attic or roof space a measures not less than i 10 m in area ii 1 000 mm in length or width and. Unobstructed headroom of at least 30 inches must be available above the attic opening. 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. Minimum of 22 inches wide by 30 inches high 559 mm wide by 762 mm high.

Other common loft hatch standard sizes are. An attic access opening runs between the ceiling joists whenever possible. Here in canada our minimum attic insulation requirement is r 40 that s a metric u value of 0 142 if you re in europe or actually using the units we re supposed to be in canada. Tuesday january 28 2020 the rough opening cannot be less than 22 inches by 30 inches and must be located in a hallway or other readily accessible location.

If you only need to access your loft on rare occasions such as to get christmas decorations down once a year this is a. The rough framed opening must be a minimum of 22 inches by 30 inches. If the attic space is smaller than these specs then an access hatch is not required. The compact attic ladder requires a minimum height of 28 and minimum depth of 44 inside the attic above and behind the opening.

For smaller attic openings with a minimum measurement of 18 x 24 you will need to measure the swing clearance inside the attic space. What is the minimum size for attic access opening. The ontario building code access 9 19 2 1. The minimum size for an attic s access by michele norfleet.

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. Before installing the attic access hatch you will want to insulate the backside of it before putting everything in place. The access opening should be located in a hallway or other readily accessible location and minimum 22 x 30.