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.
Avg size of an attic.
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.
Standard openings are 22 5 x 54 but some homes have wider openings.
20 x 50 1 000 sq.
As answer 2 states or suggests average is subjective and relative.
Measure the rough opening in your ceiling both the width and length.
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 framed opening.
Assume for a moment that a house at 1800 sq.
Of living space measures 40 by 45 at the exterior.
Measure the width of your attic space in feet.
Conversely some homes have smaller openings or hatches.
Step 3 multiply step 1 and step 2 together to get the area of the attic floor.
The rough framed opening must be a minimum of 22 inches by 30 inches.
Example 20 wide by 50 long attic.