Pressure Washing vs. Soft Washing: What’s the Difference?

If you’re looking to clean the exterior of your home, driveway, or other outdoor surfaces, you’ve likely come across the terms pressure washing and soft washing. While both methods are effective for removing dirt, grime, mold, and mildew, they serve different purposes and are best suited for different surfaces. Understanding the key differences can help you choose the right cleaning method for your needs.

What is Pressure Washing?

Pressure washing uses a high-powered stream of water to blast away dirt, debris, and stains from hard surfaces. This method typically utilizes water pressure between 1,300 and 3,100 PSI (pounds per square inch) to clean effectively.

Best Uses for Pressure Washing:

• Concrete driveways and sidewalks – Removes tough stains like oil, grease, and tire marks.

• Brick and stone surfaces – Effectively clears away built-up grime and moss.

• Decks and patios – Helps eliminate mildew and discoloration from wood and composite materials.

• Fences – Restores the appearance of metal and wooden fences by stripping away dirt and old paint.

While pressure washing is highly effective, it can be too aggressive for certain materials, leading to damage if not done correctly. That’s where soft washing comes in.

What is Soft Washing?

Soft washing is a gentler cleaning method that uses low-pressure water (under 1,000 PSI) combined with specialized cleaning solutions to break down and remove dirt, mold, and algae. Instead of relying on sheer force, soft washing uses detergents and surfactants to dissolve buildup, which is then rinsed away with low-pressure water.

Best Uses for Soft Washing:

• Roof cleaning – Safely removes algae, lichen, and moss without damaging shingles.

• House siding (vinyl, stucco, or wood) – Prevents water intrusion while effectively cleaning mildew and stains.

• Wooden surfaces – Avoids splintering or damage that high pressure can cause.

• Delicate stone or painted surfaces – Preserves the integrity of softer materials.

Soft washing is ideal for preventing long-term damage and is often used for regular maintenance to keep surfaces clean without the risk of stripping paint or etching delicate materials.

Which Method is Right for You?

Choosing between pressure washing and soft washing depends on the surface material, the type of dirt or grime, and how delicate the structure is. Here’s a quick comparison:

Feature	Pressure Washing	Soft Washing
Water Pressure	High (1,300 - 3,100 PSI)	Low (Under 1,000 PSI)
Cleaning Method	Forceful water spray	Chemical-based with gentle rinse
Best For	Hard surfaces like concrete, brick, and stone	Delicate surfaces like roofs, siding, and painted areas
Risk Level	Can cause damage if used improperly	Safer for fragile surfaces

Final Thoughts

Both pressure washing and soft washing play important roles in exterior cleaning. If you need to remove stubborn stains from a hard surface, pressure washing is the way to go. For more delicate areas like roofs and siding, soft washing offers a safer and longer-lasting solution.

Hiring a professional cleaning service ensures that the right method is used for each surface, preventing damage and improving the longevity of your home’s exterior. Whether you choose pressure washing or soft washing, regular maintenance will keep your property looking its best year-round.