Mildew, fungus, algae attacks the substrate which means the surface/ paint. The paint surface is like the skin to your body, it protects the house. And once that takes hold the paint can start to deteriorate and can affect the life of the paint. By power washing each year it can prolong the life of the paint job and not have to paint as often. Below are a few FAQ's our clients have asked. How often should I power wash my house? We recommend pressure washing every year. What are the benefits of pressure washing? Cleans your decks, the exterior of your house, or your front walkway more than just taking a hose to it. Gets rid of bugs, dirt, and other bacteria that might have formed on your house or deck.