One of the most important things that you can do to keep your property looking great is pressure washing at least once every year. The best way for a problem with mold and mildew from resurfacing is by using chemicals during the process but without them, it's going to happen very quickly in some cases - which means more work for you!|Pressure washing is something that can be done every other year or even once a year, depending on how often the rest of your property needs to be cleaned. One way you could prevent mold and mildew from coming back so quickly after pressure washing compared by using biodegradable cleaning agents during the process rather than more harsh chemicals.