Attic Stud Spacing

Attic joists for live loads.

Attic stud spacing.

It needs a certain amount of loft to work properly. For a finished attic to be to code it must satisfy the same living requirements of other rooms sometimes called the rule of sevens any living space in a home needs to have at least 7 feet 2 1 m of clearance from the floor to the ceiling and there needs to be at least 70 square feet of space available at least 7 feet 2 1 m in each direction. Use our roll insulation calculator to estimate how much roll or batt insulation you ll need. That means the builder measures from the center of one stud to the center of the next.

If building a knee wall for storage like karl did with this project make sure to insulate that area as well. Staple insulation between the wall studs and ceiling joists image a. If you re insulating framed walls make sure the insulation is the correct thickness for your wall studs. In new residential construction the most common stud spacing is 16 inches on center.

Step 1 check the ceiling height. You also need to ensure that the joist spacing is adequate. Use r 30 insulation for the ceiling and r 13 for the walls. Measure between joists if insulating a floor or attic or studs if insulating unfinished walls to find the correct width for the insulation.

Building code also requires that the. Joist dimensions are only part of the equation. Don t mash or compress the insulation into the space.