How Long Does It Take to Pressure Wash a House?
Quick Answer
2–4 hours for an average-sized home. A 2,000 sq ft house typically takes about 3 hours including setup, washing, and cleanup.
Typical Duration
Quick Answer
Pressure washing a house takes 2–4 hours for an average 1,500–2,500 square foot home. This includes setup time, the actual washing, and basic cleanup. Larger homes, homes with heavy staining, or multi-story houses can take 4–6 hours or more.
Time Estimates by Home Size
| Home Size (sq ft) | Estimated Time | Stories |
|---|---|---|
| Under 1,000 | 1–2 hours | 1 |
| 1,000–1,500 | 2–3 hours | 1–2 |
| 1,500–2,500 | 3–4 hours | 1–2 |
| 2,500–3,500 | 4–5 hours | 2 |
| 3,500+ | 5–7 hours | 2–3 |
These estimates include all four sides of the house. If you are only washing the front or a specific section, expect about 30–60 minutes per side.
Time Breakdown by Task
| Task | Duration |
|---|---|
| Equipment setup and water connection | 15–20 min |
| Apply detergent/pre-treatment | 15–30 min |
| Dwell time for detergent | 5–10 min |
| Pressure washing all sides | 1.5–3 hours |
| Windows and trim detail work | 20–40 min |
| Cleanup and equipment breakdown | 15–20 min |
How Siding Type Affects Time
| Siding Material | Time Factor | Recommended PSI | Notes |
|---|---|---|---|
| Vinyl | Standard | 1,300–1,600 | Most forgiving, rinses clean easily |
| Wood | 1.5x longer | 1,000–1,200 | Low pressure to avoid damage |
| Brick | 1.25x longer | 1,500–2,000 | May need mortar joint attention |
| Stucco | 1.5x longer | 1,000–1,500 | Gentle technique required |
| Aluminum | Standard | 1,300–1,600 | Watch for denting at high pressure |
| Fiber cement | Standard | 1,300–1,600 | Durable, similar to vinyl |
Wood and stucco require lower pressure settings and a softer touch, which slows the process. Vinyl and fiber cement siding are the fastest to clean.
Pressure Washing vs. Soft Washing
Not every surface should be pressure washed at full strength:
- Pressure washing (1,500–3,000 PSI): Best for concrete driveways, walkways, and brick. Uses high water pressure to blast away dirt.
- Soft washing (under 1,000 PSI): Best for siding, roofs, and delicate surfaces. Uses lower pressure combined with specialized cleaning solutions to kill mold and algae.
Most professionals soft wash the siding and pressure wash hard surfaces. Soft washing typically takes 15–20% longer because it relies on chemical dwell time rather than brute force.
Prep Work Before Washing
Before starting the pressure washer:
- Close all windows and doors tightly.
- Cover electrical outlets and fixtures with plastic and tape.
- Move outdoor furniture, grills, and decor away from the house.
- Protect plants and landscaping by wetting them first and covering delicate plants with tarps.
- Sweep away loose debris from siding and around the foundation.
- Pre-treat heavy stains like mold, mildew, or rust with appropriate cleaners.
DIY vs. Professional
| Factor | DIY | Professional |
|---|---|---|
| Time | 3–5 hours | 2–3 hours |
| Cost | $50–$100/day rental | $200–$500 |
| Equipment | Rented or purchased | Commercial-grade |
| Risk of damage | Higher | Lower |
Professionals work faster because they use commercial-grade equipment and have experience selecting the right pressure, nozzle, and technique for each surface.
Tips for Effective Pressure Washing
- Start from the top and work down so dirty water flows down and away from cleaned areas.
- Use a 25-degree (green) nozzle for most siding. The 15-degree (yellow) nozzle is too aggressive for most surfaces.
- Keep the nozzle 6–12 inches from the surface for consistent cleaning without damage.
- Work in overlapping horizontal strokes to avoid streak marks.
- Never aim water upward under siding as this forces water behind the siding and into the wall cavity.
- Wash on an overcast day when possible. Direct sunlight causes cleaning solutions to dry too quickly.
- Pressure wash annually to prevent buildup of mold, mildew, and grime that becomes harder to remove over time.