Wall Valance Lighting . Plan to buy twice as much lighting. Dc input w/ high efficiency, up to 125 lumens/watt. Pin on Cove lighting from www.pinterest.jp Valance lighting provides upward and downward illumination and typically runs continuously along a wall. The technique which bounces lights off of walls and ceilings is known as indirect lighting. A method of indirect lighting, by concealing the fixture behind a suspended valance, whereby the light can be directed upward or downward.