Attic Access Hatch Size

Before installing the attic access hatch you will want to insulate the backside of it before putting everything in place.

Attic access hatch size.

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 ontario building code access 9 19 2 1. Other common loft hatch standard sizes are. Measure the rough opening in your ceiling both the width and length.

Standard openings are 22 5 x 54 but some homes have wider openings. The type of attic access determines the means you can install for entrance into the attic. Weight capacity designed to fit ceiling heights from 8 ft. The access opening should be located in a hallway or other readily accessible location and minimum 22 x 30.

If the attic space is smaller than these specs then an access hatch is not required. It s important to understand the opening size you have or will create to ensure you select the correct attic ladder product for your home. If you only need to access your loft on rare occasions such as to get christmas decorations down once a year this is a. 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.

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. Here s the full text of the code. 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 iii 600 mm in height over at least the area described in subclauses i and ii or. And standard ceiling openings of 22 5 in.

Conversely some homes have smaller openings or hatches.