Silt fence is manufactured from polypropylene UV resistant tapes. Silt fences are perimeter controls, typically used in combination with (properly designed) sediment basins and sediment traps, as well as erosion controls, which are designed to retain sediment in place where soil is being disturbed by construction processes. A silt fence is a temporary sediment control device used on construction sites to protect water quality in nearby streams, rivers, lakes and bays. A typical fence consists of a piece of synthetic filter fabric (also called a geotextile) stretched between a series of wooden or metal stakes and helps to keep the environment as clean as possible. Advantages of silt fence Prevent costly jobsite materials from draining off Keep roads and rivers free from pollution