To floor an attic you ll need to install a sub floor for support before laying your plywood floor.
Above the top floor attic.
An attic may also be called a sky parlor or a garret because attics fill the space between the ceiling of the top floor of a building and the slanted roof they are known for being awkwardly shaped spaces with exposed rafters and difficult to reach corners.
Attic dek is a specially designed attic floor system that consists of 16 or 24 squares attached to the top of ceiling joists.
You also need to ensure that the joist spacing is adequate.
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.
An attic sometimes referred to as a loft is a space found directly below the pitched roof of a house or other building.
Attic joists for live loads.
You ll have to construct a wooden frame or sub floor with boards 16 inches apart to provide extra support for the floor.
Joist dimensions are only part of the equation.