How to Safely Pressure Wash a Concrete Driveway

Driveways endure constant abuse from automotive fluids, organic growth, and weather, eventually turning from clean concrete to a dingy, stained surface. Pressure washing is the quickest way to reset the look of your home's exterior, but it requires more than just blasting away with high pressure. Done well, pressure washing removes surface grime without damaging the concrete's integrity or surrounding landscaping. Using the right techniques and a surface cleaner attachment ensures consistent results and prevents those unsightly 'zebra stripe' marks that occur when using a high-pressure wand alone.

1. Clear the Stage First. Remove all vehicles, potted plants, and loose debris from the driveway using a leaf blower or stiff broom. Move any delicate flowers or shrubs away from the edge of the work area.
2. Treat Problem Areas. Apply a concrete degreaser or specialized driveway cleaner to stubborn oil spots or tire marks. Allow the solution to sit for 10 minutes, but do not let it dry on the surface.
3. Attach Your Best Tool. Attach the circular surface cleaner accessory to your pressure washer wand. This tool uses two rotating nozzles under a hood to provide even pressure across the surface.
4. Wash Top to Bottom. Start at the highest point of the driveway and work downward. Move the surface cleaner in slow, overlapping horizontal passes across the width of the concrete.
5. Finish Every Corner. Switch to a 25-degree or 40-degree spray tip for areas the surface cleaner cannot reach, such as tight corners or curbs. Hold the nozzle at least 12 inches away to avoid gouging the concrete.
6. Flush Away All Residue. Switch to a low-pressure setting and rinse all loosened grime and chemical residue toward a storm drain or lawn area. Use a broom to push any remaining pools of dirty water off the driveway.