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 plywood.
Flooring for attic bedroom.
Large attic bedroom with skylights.
Joist dimensions are only part of the equation.
First if you never build a room in the attic the insulation in the floor area will save energy costs.
If you plan carefully and get the right materials you can install a.
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.
Air from rooms below will not escape rapidly into the attic.
Before you start creating a floor for your attic you must make sure that it can handle the additional load.
In many cases ceiling joists for dead loads are designed to carry 10 pounds per square foot.
Also if you do build a room or rooms in the attic one day the floor insulation will help soundproof the attic space.
What is unique about this attic bedroom is the stunning antique wood panels on the ceiling which matches perfectly with the faux concrete floor tiles.
Thinner plywood can flex when you walk on it even with 16.
The resulting contrast of textures materials creates a very bold industrial look while maintaining a classy elegant feel to the space.
Adding a floor to an attic can increase storage space or create a new room.