Soft washing is the better option since the risk of damaging your home's vinyl material becomes much lower. In this case, soaps and detergents prove more important to the cleaning process than pressure. High water pressure will dig into vinyl and aluminum sidings, significantly decreasing its visual appeal. Soft washing removes dirt, grime, and stains more effectively. The soft washing method is the way to go if you're looking for a deep clean. That's because soft washing equipment uses specialized cleaners to break down and remove stubborn dirt, grime, and stains.