"Straight line flooring" typically refers to a flooring installation style where the flooring material, whether it's hardwood, laminate, vinyl, or tile, is laid down in a straight and parallel manner. This creates a clean and modern look where the lines run parallel to the walls and edges of the room.
Straight line flooring emphasizes symmetry and simplicity. The planks or tiles are aligned parallel to each other and usually follow the straight edges of the room.