Average Attic Opening Size

To make a door use cabinet grade plywood cut 1 8 smaller than the wood door frame opening.

Average attic opening size.

Conversely some homes have smaller openings or hatches. In new installations a rough. Due to various opening sizes and finishes a door is not included with this ladder. Screw the hinges included to one edge of the door and then attach them to the frame of your opening.

Example 20 wide by 50 long attic. 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. There are plenty of choices that will fit into an existing opening typically 22 or 25 inches by 54 inches. 20 x 50 1 000 sq.

If the opening is located in a wall the 30 inch dimension must be vertical. A few have rails that telescope like an old fashioned shaving mirror. Roughing an opening for fold down attic stairs. For example if your length is 40 feet and your width is 20 feet then 40 20 800 square feet.

The rough framed opening must be a minimum of 22 inches by 30 inches. Multiply step 1 and step 2 together to get the area of the attic floor. To determine the size of your attic multiply the width by the length of the attic floor in feet. If mechanical equipment or appliances are housed in the attic there must be an unobstructed passageway large enough for the removal of the appliance.

Some slide some fold. You have your pick of wood aluminum or steel in different heights weights and load capacities. Standard openings are 22 5 x 54 but some homes have wider openings. Fold down attic stairs provide convenient access to your attic without taking up space in the floor below the attic.

The rough framed opening. The rough opening cannot be less than 22 inches by 30 inches and must be located in a hallway or other readily accessible location. 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. Measure the rough opening in your ceiling both the width and length.

For a single story house this is usually the same as the square footage of the house itself plus any attached garage area. Step 4 measure the height of your attic in feet.