Abstract: An interlocking portable rollout attic flooring having a plurality of planks laid in a mutual abutting relationship of side edges of the planks, to define a common longitudinally extensive top and bottom surfaces, the common bottom surface having longitudinally directed notches oriented orthogonal to the side edges. The longitudinally directed notches engaged with spaced apart beams for support and stability of the flooring. The side edges of the planks configured in a mutually overlapping relationship wherein each plank supports a portion of weight applied to each adjacent plank. At least one longitudinally directed flexible strap fixed to the top surface of the flooring to secure the planks in the abutting relationship while allowing the planks to be rolled into a cylindrical configuration.