How Long Does Pressure Washing Take?
Pressure washing can take less than an hour for a small surface or most of a day for larger areas with heavy buildup. Time depends on square footage, surface type, dirt level, stains, water pressure, and equipment.
For a custom estimate, use the pressure washing time and cost estimator. This guide explains the biggest timing factors.
Quick answer: average pressure washing time
A typical driveway may take 1 to 3 hours to pressure wash. Smaller patios or walkways may take less, while siding, decks, large surfaces, and heavy grime can take much longer.
| Surface | Typical time | Notes |
|---|---|---|
| Small patio or walkway | 30 minutes to 1.5 hours | Depends on buildup and equipment |
| Driveway | 1 to 3 hours | Flat concrete is usually straightforward |
| Deck | 1.5 to 4 hours | Requires more care to avoid damage |
| House siding | 2 to 6+ hours | Depends on height, access, and dirt |
What affects pressure washing time?
1. Surface type
Flat concrete surfaces like driveways and sidewalks are usually faster. Decks, siding, and textured patios often require slower passes and more careful technique.
2. Dirt, algae, stains, and buildup
Light dirt may rinse quickly, while algae, mildew, oil stains, and heavy grime can require pretreatment, slower cleaning, repeated passes, or extra rinsing.
3. Equipment type
Electric pressure washers are often slower for large jobs. Gas pressure washers and professional equipment can clean faster, especially on concrete and larger surfaces.
4. Setup and cleanup
Moving furniture, connecting hoses, applying cleaner, protecting plants, and rinsing nearby areas can add time before and after the actual washing.
How to Properly Pressure Wash Outdoor Surfaces
Pressure washing can make driveways, patios, sidewalks, decks, and siding look much cleaner, but the wrong pressure, nozzle, or technique can damage surfaces. A good pressure washing job starts with preparation, the right equipment, and careful testing before cleaning the full area.
Gather tools and protective gear
Common supplies include a pressure washer, garden hose, surface cleaner if using one, appropriate nozzles, outdoor cleaner or detergent if needed, gloves, eye protection, closed-toe shoes, and hearing protection for loud equipment. You may also need a broom, scrub brush, plastic sheeting, and towels or rags for cleanup.
Clear and inspect the area
Move furniture, planters, vehicles, toys, mats, and loose items away from the work area. Sweep away loose dirt, leaves, and debris before starting. Inspect the surface for cracks, loose boards, damaged siding, open gaps, peeling paint, or areas where water could get behind the material.
Choose the right nozzle and pressure
Start with a wider spray pattern and lower pressure, then increase only if needed. A narrow high-pressure stream can etch concrete, damage wood, strip paint, or force water behind siding. Use extra caution on decks, painted surfaces, older concrete, brick, mortar, and siding.
Test in a small hidden area first
Before cleaning the entire surface, test a small area that is not highly visible. Hold the wand at a safe distance and check whether the pressure is cleaning effectively without leaving marks or damage. If the surface looks rough, faded, splintered, or etched, stop and lower the pressure or change your approach.
Apply cleaner when needed
Dirt may rinse away with water alone, but algae, mildew, oil stains, or heavy grime may need a cleaner or pretreatment. Follow the product instructions, apply evenly, and allow the cleaner to dwell for the recommended time without drying completely. Protect plants and rinse nearby landscaping when needed.
Work in consistent sections
Clean in manageable sections so the surface looks even. Keep the wand moving and avoid stopping in one spot with high pressure. Use overlapping passes, similar to mowing a lawn, so you do not leave stripes. On flat surfaces, work from one side to the other. On vertical surfaces, work carefully and avoid spraying upward under siding or trim.
Use special care on decks and siding
Wood decks can splinter or scar if pressure is too high or the nozzle is too close. Siding can be damaged if water is forced behind panels, vents, or openings. Keep the spray at a safe angle, use lower pressure, and avoid spraying directly into seams, electrical fixtures, windows, or gaps.
Rinse thoroughly and clean up
After washing, rinse away loosened dirt, cleaner, and residue. Check corners, edges, steps, and low spots where dirty water may collect. Once finished, disconnect equipment, drain hoses, rinse plants if needed, and allow the surface to dry before replacing furniture or walking heavily on the area.
Know when not to pressure wash
Avoid pressure washing damaged wood, loose mortar, failing paint, cracked surfaces, exposed electrical areas, roof shingles, or delicate materials unless you know the correct method. Some surfaces need soft washing or a professional approach instead of high pressure.
DIY pressure washing vs. hiring a pro
DIY pressure washing may be a good option for driveways, sidewalks, and basic patio cleaning. Hiring a professional may be worth considering for siding, decks, large surfaces, heavy stains, or areas where damage risk is higher.
To compare time and cost, use the pressure washing calculator and adjust surface type, square footage, dirt level, and equipment.
Estimate your pressure washing time
Start with the surface type and square footage, then adjust for dirt level, equipment, and whether you are working alone or with help.
Open the pressure washing estimator