In order to determine how many recessed lights are needed per square foot, multiply the spacing criterion for specific light being used from mounted height by the height of what you are intending to illuminate. In general, this would be the measurement between the ceiling and floor.
Recessed lighting adds function and illumination while blending in with the ceiling and making the room seem larger. Choosing a lighting layout includes picking the amount, size and wattage of the recessed lighting. When installing recessed lighting, protect surrounding furniture, make certain to avoid ceiling wiring and beams, and wear protective goggles and a dust mask.