Application of existing shading devices is limited to protection from overheating and glare and providing privacy. A lack of guidance for appropriate selection and design of the shading device in the windows leads to unsatisfactory performance of the shading device.

The paper explains research that looks to improve performance of a shading device by developing a decision-making framework for selection and design of the shading device systems based on daylighting performance. Goals are to determine daylighting performance required for the shading device and variables that influence shading device daylighting performance and to develop and validate decision-making framework for selection/design of the shading device based on its daylighting performance. A decision- making framework can help designers of the buildings, together with the clients, to select the most appropriate shading device based on daylighting performance and shading device manufacturers to do appropriate design of the new shading device system with improved daylighting performance.