Pressure washers clear away seasonal buildup of dirt and grime from your siding, but many homeowners blast the water at full force. Excessive water pressure can damage your home’s exterior by forcing moisture under the siding, peeling away paint, or damaging softer materials like cedar. To keep your siding in top shape for winter, fit a pressure washer wand with a wide-spray tip. Start at the top of the siding, and then angle the direction of the water slightly downward. Be sure to use gentle side-to-side motions while cleaning.