Attic Flooring Thickness

For example if you have a type of insulation that has an r value of r 5 per inch of thickness you will need a depth of 6 inches of this insulation installed your attic to reach r 30 if you live in zones 2 or 3.

Attic flooring thickness.

As an example a floor space that totals 70 sq. Would still not be allowed because its 4 x 17 5 dimensions. Floor space dimensions. In one scenario this would translate to a bare minimum of 7 x 10.

Use old boards that are close to the same thickness in a given section of the attic however. 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. You ll need to make sure that the plywood can fit through your attic door. If you plan to finish the floor in the attic and turn the room into a living space however you should always use 3 4 inch.

At least 7 feet in any direction. Note from this chart that the ideal r value differs for each part of your home. A single 4 pack covers approximately 10 sq. The thinner plywood is acceptable when the joist spacing is 16 inches.

You also need to ensure that the joist spacing is adequate. To prevent homeowners from building strangely configured and potentially dangerous spaces. Attic joists for live loads. If you ever need to cover them with finished flooring you can always nail down another subflooring before installing tile or hardwood.

It s a good idea to rip long thinner strips of plywood that will fit through the attic door. If you plan on placing the plywood around the perimeter of the opening or door and using it only to store light boxes or materials 1 2 inch thick plywood should suffice. Purchase half inch 1 27 cm thick plywood to act as your flooring. More product details close.

19 32 and 5 8 inch thick. Attic flooring panels are easy to install with their interlocking edges. Take the measurements for your subfloor and measure enough plywood so that you can cover the entire frame. Cdx plywood should be a minimum of 7 16 inch thick.

These lightweight easy to manage panels can be installed by even the most inexperienced homeowner in about 15 minutes. Standard joist spacing for the installation of attic flooring materials is 16 inches on center oc meaning the distance from the center of one joist to the center of the next joist is 16 inches. You don t want lots of different floor heights or walking in the attic will be difficult. The thicknesses are as follows.