Hydro-blasting, is commonly known as power washing, or pressure washing. Hydro-blasting is the process by which a highly pressured stream of water is used to remove old paint, chemicals, or buildup without damaging the original surface. Hydro Blast Cleaning is mostly used in the painting preparation of buildings but it may also be used to keep your building clean. Buildings get dirty as well from air pollution, bugs and spiders. Washing your building every other year can keep it looking new and extend the life of your paint coatings .