Ask any homeowner what pressure washing is and they'll describe someone with a high-powered wand blasting water at a surface. The reality is more nuanced — and using the wrong method on the wrong surface can cause thousands of dollars in damage.
What Is Pressure Washing?
Pressure washing uses high-pressure water — typically between 1,500 and 4,000 PSI — to blast contaminants off hard surfaces. It's excellent for concrete driveways, brick pavers, sidewalks, and other surfaces that can withstand direct high-pressure impact. The force of the water itself does most of the cleaning work. What it is NOT good for: painted wood, vinyl siding, windows, roofing, or any surface with a coating or finish that can be stripped or damaged.
What Is Soft Washing?
Soft washing uses low water pressure — typically under 500 PSI, comparable to a garden hose — combined with biodegradable cleaning solutions to safely remove organic growth, stains, and contaminants from delicate surfaces. The chemistry does the work, not the force. Soft washing kills mold, algae, and mildew at the root rather than just blasting it off the surface, which means results last 4–6 times longer than pressure washing alone.
Pro Tip: The ARMA (Asphalt Roofing Manufacturers Association) specifically recommends soft washing for roof cleaning. High pressure voids most shingle warranties.
When to Use Each Method
The right method depends entirely on the surface being cleaned. A professional crew will assess each surface before ever picking up a wand.
- Soft wash: vinyl siding, painted surfaces, roofing, wood decks, stucco, EIFS
- Pressure wash: concrete driveways, brick, pavers, stone walkways, metal fencing
- Either (calibrated carefully): composite decking, gutters, hardy board siding
- Never high pressure: windows, screen enclosures, soft wood, cedar shake
Why Most Homes in Columbus Need Soft Washing
The majority of Columbus-area homes are clad in vinyl siding, painted wood, or stucco — all surfaces that should never see high-pressure water. The primary problems we're hired to solve (algae, mold, mildew, and environmental staining) are biological in nature and respond best to chemical treatment, not brute force. High pressure on siding can force water behind panels, causing moisture damage and mold inside your walls — problems that are far more expensive than a simple wash.
The BPW Columbus Approach
Every job we do starts with a surface assessment. We use commercial-grade soft wash equipment for siding, roofs, and delicate surfaces, and switch to hot-water pressure washing for concrete, driveways, and hardscaping. Our cleaning solutions are fully biodegradable and safe for landscaping, pets, and family. This two-method approach is the industry standard among professional crews and the reason our results last significantly longer than a basic pressure wash.
Questions to Ask Any Cleaning Company
Before hiring any exterior cleaning company in Central Ohio, ask these simple questions: Do you adjust pressure based on the surface? Do you use cleaning solutions or just water? Are your chemicals biodegradable? What PSI do you use on siding? A legitimate professional crew should be able to answer all of these confidently and specifically. If they can't, keep looking.
Frequently Asked Questions
Soft washing uses low pressure (under 500 PSI) with biodegradable cleaning solutions to kill biological growth at the root. Pressure washing uses high-force water (1,500–4,000 PSI) for hard surfaces like concrete. The right method depends entirely on the surface being cleaned.
Ready to Get Started?
BPW Columbus serves all of Central Ohio. Same-week scheduling available. Fully insured & family-owned.