Earthmate Geotextiles serve to separate layers of stone in civil engineering applications for highways and roads, car parking lots and many other applications. By separating the subgrade soil and subbase fill materials, the geotextile preserves the strength characteristics of the aggregate material and also preserves the drainage behavior. It also helps to restrict the upward flow of water and finer soil particles into the gravel, which would otherwise drastically reduce the strength of the gravel.