“Pressure washing” is often used as a catch-all term, but there’s a big difference between cleaning with high pressure versus cleaning with low pressure + the right solutions. Knowing which one applies to your home can protect siding, paint, roofing materials, and landscaping — and can prevent expensive damage.
What is soft washing?
Soft washing is a low-pressure cleaning method designed for surfaces that can be damaged by high pressure. It relies on appropriate cleaning solutions and dwell time to loosen organic growth (like algae and mildew), then uses low pressure to rinse clean.
- Vinyl siding, painted siding, and trim
- Delicate exterior surfaces
- Organic growth (green algae, mildew, light mold staining)
- Areas near landscaping where controlled application matters
What is pressure washing?
Pressure washing uses higher pressure to remove embedded dirt and buildup from durable surfaces. Done correctly, it can produce a clean, uniform finish — but used in the wrong place, it can etch surfaces, force water behind siding, damage paint, or leave visible marks.
- Concrete: driveways, sidewalks, patios
- Pavers/stone (method depends on condition and joints)
- Some decks (method depends heavily on material and condition)
Quick comparison
| Area | Recommended method (most homes) | Why |
|---|---|---|
| House siding | Soft washing | Reduces risk of damage and water intrusion; targets organic staining safely. |
| Roof (as applicable) | Soft washing (low pressure) | Roofs are not a “high pressure” surface; low pressure is used to protect materials. |
| Concrete | Pressure washing (controlled) | Concrete can handle higher pressure; consistent technique matters for a uniform finish. |
| Windows | Window cleaning tools (not high pressure) | Designed for safe, streak-free results without damage. |
| Gutters | Cleaning + brightening (as applicable) | Debris removal and appearance improvements depend on access and surface condition. |
How to choose the right method
Here’s the homeowner-friendly rule: choose the method that achieves the result with the lowest risk. High pressure can be effective — but it’s not “better” by default.
- Is it organic growth? Soft washing is often the safest first choice.
- Is it concrete or flatwork? Controlled pressure washing is usually appropriate.
- Is it painted, older, or delicate? Avoid aggressive pressure — test first.
- Is water intrusion a concern? Softer methods reduce risk around siding and trim.
Red flags to watch for
- Says they’ll “pressure wash everything” without discussing surfaces
- Can’t explain how they protect siding, paint, and landscaping
- Doesn’t mention pre-rinse / post-rinse practices near plants
- Gives a quote without asking basic access/safety questions
What DSG recommends
We match the method to the surface. That typically means soft washing where low pressure is required, and controlled pressure washing only where it’s appropriate. The goal is a clean home — without avoidable risk.
Request a quote and we’ll recommend the safest method for your home.