SZEGED, HUNGARY, 01 AUGUST, 2024: Removable Textile Solar Protections High-mounted Over Karasz Street, Szeged, Hungary. Editorial Photo

Sun sails, particularly if high-mounted, cast shadows over the street buildings, reducing their solar loads and surface temperatures. Both effects might help to avoid indoor overheating, and therefore, to reduce building cooling demands. A shade sail ? or somewhat more precise a textile sunshade sail or a textile sun protection sail ? is a device to create outdoor shade based on the textile basic technology that can be found in a ship's sail. Shade sails use a flexible membrane tensioned between several anchor points. While generally installed permanently, they are cheap and easy to set up.