Stucco and Vinyl siding are much more prone to damage, so we use a process called softwashing. Hot temperatures can damage stucco and vinyl, so the water that we use is cold. Cleaning more delicate materials such as these is best done with soaking and chemicals, not pressure. We use a perfect blend of chemical concentration, soak time, and light pressure in order to effectively clean these surfaces without doing any damage. The detergents that we use contain surfactants and rise aides, similar to a dishwashing liquid. It works great on windows and siding. We also utilize algicide which helps to prevent the growth of more algae in the future.