Green algae creeps across the north side of the house. Black streaks run under the eaves. The driveway looks decades old. A rental pressure washer seems like a cheap weekend fix. Then the damage starts. One wrong nozzle at 3,000 PSI strips paint, gouges cedar, and drives water behind siding where mold grows unseen. Operators get hurt, too: Consumer Reports, citing federal safety data, puts pressure washer injuries at roughly 6,000 emergency room visits in a single year. Profe
