How do tensioned shade cloth structures lower temperature?
Hot air rises out the top between the knitted yarns of High Density Polyethylene (HDPE). This draws outside air into the structure from the sides, which creates continuous air movement. Thats why cable-tensioned fabric shade canopies, shade sails, and permanent shade umbrellas reduce ambient air temperature up to 20 degrees. By contrast, hardened roofing materials (i.e. metal, wood, plastic, tile, stone, etc) and conventional awning fabric traps hot air inside the structure.
