Pressure washing is an important part of keeping your home and surrounding grounds clean. However, there are a number of things you need to keep in mind when you're bringing in a power washing contractor. First, you want to be sure that the contractor is using environmentally-friendly washing equipment. Even people who don't care much about conservation should keep this in mind. This is because eco-friendly power washers use less water by increasing the force applied to water moving through the hose. This means that the hose is more powerful and the job gets completed much faster. Next, you should consider using a contractor who is able to perform more than one service for you. This is especially important in the cooler States, where power washers are often used to spray moss off roofs after the cold, damp winter. Finding a contractor who can also apply your anti-moss treatment after power washing the roof can be a time saver. It can also save you money since you won't have to pay for a separate service call through another contractor. This type of diverse potential is always desirable in any contractor you work with.