The spectral distribution of radiative energy in sunlight. At the earth's surface, about 99% of sunlight arrives in at wavelengths between 300 and 2500 nm.

The ratio of reflected to incident sunlight, measured on a scale of 0 to 1 (or 0-100%), where higher numbers indicate greater reflectance. Also known as "solar reflectance."

Typically fiberglass sheets soaked with asphalt for waterproofing and covered with granules (crushed rock, often colored) to shield the asphalt from ultraviolet light. It is one of the most widely use [..]

A heavy roofing material, typically a stone or concrete paver, used to weigh down waterproof layers (e.g. a single-ply membrane) and increase the thermal mass of the surface to decrease heat flux thro [..]

The opaque elements of the car’s envelope, such as its roof and doors.

The molecular transfer of heat, such as the flow of heat through a solid.

The transfer of heat by circulation or movement of a fluid (liquid or gas).

A roof that stays cool in the sun by reflecting sunlight (to minimize solar absorption) and emitting thermal radiation (to help dissipate solar heat gain).

A cool-colored material strongly reflects the invisible “near-infrared” radiation that makes up nearly half of sunlight. Replacing a standard (warm) color with a matching cool color can boost solar re [..]

A liquid surfacing material (acrylic, elastomeric, or asphaltic) for various roof types, especially built-up roofing (BUR) and metal. Available in different colors; may be divided on the basis of refl [..]