California Green Building Code (CALGreen) – Exterior wall shading
CALGreen – These steps are being taken to lessen the amount of heat gain caused by sun exposure. A structure’s outside surfaces are exposed to more sunlight at specific periods of the year. By screening the windows from the outside, the reduction in heat gain via windows may be greatly decreased. Additionally, boosting the reflectivity of opaque walls is meant to lessen the area’s heat island impact.