Skylights are located on the roof, so they can result in unwanted summertime solar heat gain and wintertime heat loss. Manufacturers use various glazing technologies to reduce these impacts, including heat-absorbing tints, insulated glazing, and low-emissivity (low-e) coatings. Some manufacturers even install a translucent insulation material, such as aerogel, between several glazing layers to create a more thermally efficient assembly.