Attic Stud Spacing

Don t mash or compress the insulation into the space.

Attic stud spacing.

Attic joists that are made from 2x8s may be acceptable for building your attic floor but because every room is variable there are no absolutes. Use r 30 insulation for the ceiling and r 13 for the walls. Building code also requires that the. Joist dimensions are only part of the equation.

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. It needs a certain amount of loft to work properly. Use our roll insulation calculator to estimate how much roll or batt insulation you ll need. If you re insulating framed walls make sure the insulation is the correct thickness for your wall studs.

Staple insulation between the wall studs and ceiling joists image a. In new residential construction the most common stud spacing is 16 inches on center. Step 1 check the ceiling height. At least 50 step 2 make sure the attic has a full size staircase.

Measure between joists if insulating a floor or attic or studs if insulating unfinished walls to find the correct width for the insulation. That means the builder measures from the center of one stud to the center of the next. Attic joists for live loads.