The weekend method: drag out the pressure washer, aim the narrowest nozzle at the dirt, and blast in freehand strokes until your arms give out. The result is a driveway covered in overlapping "zebra stripes," a few etched lines where the nozzle got too close, and stains that come back in a month. The pro method takes about the same total time and produces an evenly, deeply clean surface. The difference is three things: chemistry first, the right attachment, and patience with the machine doing the work.
Step 1: Let chemistry do the heavy lifting
Pros don't blast stains off — they dissolve them, then rinse. Before any high-pressure water touches the driveway:
- Oil and grease spots: treat with a dedicated oil stain remover or strong degreaser and let it dwell per the label. Old, deep drips may take two rounds — pressure alone will never pull them out.
- Green and black growth: mildew and algae need a cleaner that kills them, not just moves them. A spray-and-leave outdoor cleaner beforehand means the growth stays gone instead of returning in weeks.
- General pre-soak: apply concrete cleaner across the whole surface and give it ten quiet minutes. This step is 90% invisible and does 50% of the work.
Step 2: The attachment that changes everything
The single biggest upgrade in residential pressure washing isn't a bigger machine — it's a surface cleaner attachment. It's a round hood with spinning nozzles underneath that cleans a wide, perfectly even path with every pass. It roughly halves the job time, eliminates zebra striping entirely, and keeps the nozzles at a fixed, safe distance so you can't etch the concrete. If you pressure wash flatwork even once a year, it pays for itself the first Saturday.
Step 3: Wash with a system, not a mood
- Work top of the driveway to the street, so dirty water runs away from finished areas.
- Overlap each pass by a couple of inches — with a surface cleaner this is easy to see.
- Detail the edges, joints, and cracks with the wand afterward; the round hood can't reach into corners.
- Rinse the whole surface down-slope with a wide fan tip. Rinse your grass and plants too if any cleaner drifted — most house chemicals are hard on landscaping when concentrated.
Pressure reality check: more PSI is not more clean. Concrete cleans thoroughly at moderate pressure with the right chemicals; excessive pressure at close range permanently scars the surface — we get called to look at "mystery lines" in driveways every season, and it's almost always a red tip held six inches away. Let the detergent and the surface cleaner do the work.
Step 4: The step the weekend method always skips — sealing
A freshly washed driveway is a sponge with all its pores open. Sealing it while it's clean (after a full day or two of drying) locks out oil, water, and freeze-thaw damage, and makes every future wash dramatically easier. It's also the moment to fill any cracks with concrete crack filler before winter widens them — washing day is find-the-cracks day.
Weekend method vs. pro method, honestly compared
The weekend method costs nothing extra and gets a driveway 70% clean with stripes. The pro method adds a surface cleaner and two or three inexpensive chemicals, takes about the same active time, and gets closer to 100% with an even finish that lasts. Everything mentioned here — cleaners, attachments, brushes, foam cannons — is on our Cleaning & Exterior board.
And if the honest answer is that your Saturday is worth more than a clean driveway: that's a service we offer — driveways, siding, decks, and full exteriors, commercial or residential.