Ever looked at your patio and thought, “Wow, when did this turn into a moss-covered science experiment?” You’re not alone. Over time, patios accumulate dirt, mold, and stains that make them look old and worn out.
You might think grabbing the nearest pressure washer is the solution. But is it really? Or could it do more harm than good?
Enter the debate: Pressure washing vs. soft washing. Two cleaning methods, each with its pros and cons. Choosing the wrong one could mean costly repairs or an ineffective clean.
This guide will help you understand both methods, when to use each, and how to ensure your patio stays spotless without damage.
Let’s get started!
What Is Pressure Washing?
How Pressure Washing Works
Pressure washing uses high-pressure water (typically between 1,500 and 4,000 PSI) to blast away dirt, grime, and stains. It’s perfect for hard surfaces like concrete driveways, brick walls, and stone patios.
Pros of Pressure Washing
✅ Removes tough stains, including grease and oil
✅ Works fast—no waiting around for results
✅ No chemicals required—just water at high speed
Cons of Pressure Washing
❌ Can damage delicate surfaces like softwood or old bricks
❌ High pressure can force water into cracks, leading to erosion
❌ If misused, it can strip paint and damage seals
When to Use Pressure Washing
Pressure washing is best for patios made of concrete, stone, or durable brick. If your patio has deep stains from oil, algae, or moss, pressure washing can remove them effectively.
What Is Soft Washing?
How Soft Washing Works
Soft washing uses low-pressure water (below 500 PSI) mixed with eco-friendly cleaning solutions to break down dirt, mold, and algae. Instead of brute force, it relies on the power of cleaning agents.
Pros of Soft Washing
✅ Safe for delicate surfaces like wood, vinyl, and painted surfaces
✅ Kills mold and algae at the root, preventing regrowth
✅ Uses biodegradable cleaning solutions, making it environmentally friendly
Cons of Soft Washing
❌ Takes longer because the cleaning solution needs time to work
❌ Requires specialized chemicals and equipment
❌ Might not remove heavy stains as quickly as pressure washing
When to Use Soft Washing
Soft washing is best for wooden patios, composite decks, and areas with mold or mildew issues. If your patio has fragile materials or paint, soft washing is the safer choice.
Pressure Washing vs. Soft Washing: A Side-by-Side Comparison
| Feature | Pressure Washing | Soft Washing |
| Water Pressure | 1,500–4,000 PSI | Below 500 PSI |
| Cleaning Method | High-pressure water | Low-pressure water + cleaners |
| Best For | Concrete, stone, brick | Wood, composite, painted surfaces |
| Removes Stains? | Yes (even tough stains) | Yes, but takes longer |
| Risk of Damage? | High for delicate surfaces | Low |
| Long-Term Effectiveness | Short-term if mold/algae return | Long-term as it kills mold at the root |
Which One Should You Choose for Your Patio?
Best for Concrete or Stone Patios → Pressure Washing
If you have a durable stone or concrete patio, pressure washing can quickly remove dirt, stains, and moss buildup.
Best for Wooden or Composite Patios → Soft Washing
Wood and composite materials are softer and prone to damage. Soft washing gently cleans these surfaces without causing cracks or splintering.
Best for Mold and Algae Removal → Soft Washing
Since soft washing uses cleaning solutions that kill mold and algae at the root, it’s the best long-term solution for these issues.
Best for Deep Stains → Pressure Washing
Oil stains, tire marks, and years of built-up dirt are best tackled with pressure washing.
How to Pressure Wash a Patio Safely
Step 1: Check the Surface
Make sure your patio is strong enough for pressure washing. If it’s wooden, stop now! Go for soft washing instead.
Step 2: Choose the Right Pressure Setting
- Concrete: 3,000+ PSI
- Brick: 1,500–2,000 PSI
- Pavers: 1,500–2,500 PSI
Step 3: Use the Right Nozzle
- 0° (Red): Too intense! Avoid.
- 15° (Yellow): Best for tough stains
- 25° (Green): General cleaning
- 40° (White): Gentle washing
Step 4: Spray Evenly and Keep Distance
Hold the pressure washer 12–18 inches from the surface and move in smooth, even strokes.
Step 5: Seal the Surface
Apply a sealant after drying to prevent future stains.
How to Soft Wash a Patio the Right Way
Step 1: Prepare the Cleaning Solution
Mix:
- 1 part bleach (or a commercial soft wash solution)
- 4 parts water
- A small amount of dish soap (for better sticking)
Step 2: Apply the Solution
Use a garden sprayer or soft wash system to coat the patio evenly.
Step 3: Let It Sit
Give it 10–15 minutes to break down dirt and mold.
Step 4: Rinse with Low-Pressure Water
Use a regular garden hose or a low-pressure nozzle to rinse the area.
FAQs About Patio Cleaning
1. Can I use a pressure washer on my wooden deck?
No! Pressure washing can strip wood fibers and cause splintering. Use soft washing instead.
2. Will pressure washing remove mold permanently?
No. It removes surface mold but doesn’t kill the spores. Soft washing is better for long-term mold prevention.
3. Is soft washing safe for plants and pets?
Yes, if you use biodegradable cleaners and rinse thoroughly.
4. How often should I clean my patio?
At least once a year to maintain its appearance and prevent buildup.
5. Can I mix my own soft wash solution?
Yes! A mix of bleach, water, and soap works well for most patios.
6. What if my patio has both tough stains and mold?
Use pressure washing for stains first, then apply a soft wash solution to kill mold and prevent regrowth.
7. Can I rent a pressure washer instead of buying one?
Yes, most hardware stores rent them for around $40–$100 per day.
Final Thoughts: Pressure Washing vs. Soft Washing—Which Wins?
Both methods have their place. If you want quick results on a concrete patio, go for pressure washing. If you need a gentle, long-lasting clean for wood or composite, soft washing is the way to go.
When in doubt, consider hiring a professional. They’ll know exactly how to handle your patio without causing damage.
Which method are you planning to use? Let me know in the comments!