How to Pressure Wash a Driveway: Step-by-Step Guide

Pressure washing a driveway is one of the most satisfying home improvement tasks — it transforms a grey, stained surface back to near-new condition in an afternoon. This guide walks through the entire process, from choosing the right machine to finishing techniques.

What You'll Need

Equipment

• Pressure washer — 2,000–3,000 PSI for concrete (see our top picks)
• Surface cleaner attachment (recommended) — $30–50, eliminates stripes
• 25° nozzle (green) — for general concrete cleaning
• 0° nozzle (red) — for stubborn stains (use carefully)
• Soap nozzle (black) — for applying degreaser

Cleaning Supplies

• Concrete degreaser — for oil and grease stains
• Concrete cleaner/detergent — for general cleaning (many pressure washer-compatible)
• Stiff bristle brush — for pre-treating oil spots
• Safety glasses
• Closed-toe shoes (pressure washers can cause serious injuries)

Step 1: Clear the Driveway

Remove all cars, bikes, furniture, and potted plants from the driveway. Move them far enough away to avoid overspray damage.

Sweep the driveway with a broom to remove loose dirt, leaves, and debris. This prevents clogging the surface cleaner attachment.

Step 2: Protect Surrounding Areas

Pressure washers generate significant overspray. Before starting:

• Cover nearby plants and grass with plastic sheeting or tarps
• Close all windows and doors on the house side of the driveway
• Move outdoor furniture from adjacent patio areas
• Alert neighbors if the driveway is close to their property

Step 3: Pre-Treat Oil and Grease Stains

Oil stains are the hardest part of driveway cleaning. Pressure alone won't remove embedded motor oil. Pre-treat stains 15–30 minutes before washing:

1. Apply a concrete degreaser generously to each oil spot
2. Scrub with a stiff bristle brush to work the degreaser into the stain
3. Let it soak for at least 15 minutes
4. Some stains require two applications — don't skip this step

Recommended products:

• Krud Kutter Concrete Cleaner — CHECK PRICE ON AMAZON
• Simple Green Concrete Cleaner — CHECK PRICE ON AMAZON

Step 4: Connect and Set Up the Pressure Washer

For electric pressure washers:

1. Connect the garden hose to the water inlet
2. Turn on the water supply fully
3. Attach the spray wand and high-pressure hose
4. Plug in and power on
5. Squeeze the trigger to purge air before attaching a nozzle

For gas pressure washers:

1. Check oil level before starting
2. Connect water supply and turn on fully
3. Prime the pump (consult manual)
4. Start the engine

Set up the surface cleaner attachment if you have one — attach it to the wand in place of the spray nozzle. This is the single biggest upgrade for driveway cleaning.

Step 5: Apply Detergent (Optional but Recommended)

Before high-pressure washing, applying detergent loosens dirt and improves results:

1. Switch to the soap/black nozzle (low pressure)
2. Fill the pressure washer's detergent tank or use a downstream injector
3. Apply detergent in overlapping passes, working section by section
4. Let the detergent dwell for 3–5 minutes — don't let it dry
5. Switch back to the 25° green nozzle or surface cleaner for rinsing

Step 6: Pressure Wash the Driveway

Using a Surface Cleaner (Recommended)

A surface cleaner attachment is a rotating head that covers a 12–15 inch path uniformly. It's faster and eliminates the "tiger stripe" marks that wand-only washing causes.

1. Hold the surface cleaner flat against the concrete — don't lift it
2. Work in overlapping rows, like mowing a lawn
3. Move at a steady pace — don't pause or you'll leave circular marks
4. Overlap each row by 2–3 inches

Using the Wand Only

If you don't have a surface cleaner:

1. Use the 25° (green) nozzle for most surfaces
2. Hold the wand 10–12 inches from the concrete
3. Work in sweeping passes, moving left to right
4. Always overlap passes by 50% to avoid stripe marks
5. For stubborn spots, switch to the 15° (yellow) nozzle — hold 12+ inches away

Step 7: Treat Stubborn Stains

After the initial wash, inspect for remaining stains:

Oil stains: Apply another round of degreaser, scrub, let sit 15 minutes, then hit with the 25° nozzle at close range (6–8 inches) or carefully use the 0° red nozzle.

Algae and mildew (green or black stains):

• Apply a diluted bleach solution (1:10 bleach to water) using the soap nozzle
• Let dwell 5 minutes
• Rinse thoroughly with high pressure

Rust stains:

• Apply a rust remover (oxalic acid-based)
• Scrub and rinse
• Note: rust stains may not fully remove — they improve but some discoloration can remain

Step 8: Final Rinse

After all sections are cleaned:

1. Do a final pass over the entire driveway with the 25° nozzle to rinse detergent and loosened debris to the street or storm drain
2. Pay extra attention to corners and edges where debris collects
3. Rinse toward the street/gutter, not toward the foundation or grass

Step 9: Let It Dry

Allow the driveway to dry completely before driving on it — typically 2–4 hours in dry conditions. If you plan to seal the driveway (highly recommended), wait at least 24–48 hours for full drying.

Optional: Seal the Concrete

Sealing a concrete driveway after pressure washing is the best way to protect your work and extend the life of the surface. A concrete sealer:

• Repels water, oil, and stains
• Prevents freeze-thaw cracking
• Keeps the concrete looking cleaner longer
• Needs reapplication every 3–5 years

Best concrete sealers on Amazon →

Tips for Best Results

• Pressure wash in sections — work from top to bottom, left to right
• Never use the 0° red nozzle on concrete unless you have a specific stain — it can etch the surface
• Don't use bleach on colored/stamped concrete — it can discolor
• Wear safety glasses — high-pressure water causes debris to ricochet
• Do it annually — annual cleaning prevents algae buildup and surface degradation

Pressure Washer Recommendations

Don't have a pressure washer yet? These are our top picks for driveway cleaning:

• Sun Joe SPX3000 (best value electric) — CHECK PRICE →
• Karcher K1700 (best compact) — CHECK PRICE →
• Simpson MSH3125 (best gas for heavy duty) — CHECK PRICE →

For a full comparison, read our Best Pressure Washers for Home Driveways guide.

Frequently Asked Questions

How often should I pressure wash my driveway? Once a year is typically sufficient for maintenance. More often in climates with heavy algae, moss, or tree sap.

Can I pressure wash an asphalt driveway? Yes — but use 1,200–1,500 PSI and a wide nozzle (40°). High pressure damages asphalt.

Do I need a permit to pressure wash my driveway? No — but check local regulations about where the runoff goes. Many areas require runoff to drain to a permeable surface or storm drain, not directly into storm sewers without a filter.

How long does driveway pressure washing take? A standard two-car concrete driveway takes 1–2 hours with a surface cleaner attachment, or 2–3 hours with wand only.

Last updated: March 2025. As an Amazon Associate we earn from qualifying purchases.