For applying the detergent, use the low-pressure nozzle.  For rinsing, use a high-pressure nozzle.  Do not use the high-pressure nozzle on brick surfaces.  A pressure washer can even damage concrete, so test it out on a less visible spot before you start working on the entire driveway. Stains on concrete are not only unappealing but … Continue reading Power wash the snow away | Driveway power washing