If you've searched for "pressure washing" and "power washing," you've probably noticed companies use both terms interchangeably. Most Toronto homeowners think they're the same thing. They're not — but the difference matters less than you'd think.
The Simple Answer
| Method | Water Temperature | Best For |
|---|---|---|
| Pressure Washing | Regular (cold/ambient) | Driveways, walkways, patios, most residential surfaces |
| Power Washing | Heated (up to 200°F) | Oil/grease, gum, industrial grime, commercial kitchens |
| Soft Washing | Regular (low pressure) | Siding, roofs, painted surfaces, wood decks, delicate materials |
Pressure Washing (What Most Homes Need)
Pressure washing uses regular-temperature water pushed through a machine at 1,500-4,000 PSI (pounds per square inch). The pressure — not heat — does the cleaning work.
What It Removes
- Road salt deposits (Toronto's #1 driveway problem)
- Algae and moss (common on north-facing surfaces)
- Dirt and grime buildup (years of accumulation)
- Leaf stains and tannin (from nearby trees)
- Mildew and mold (on concrete, stone, and brick)
- Hard water mineral deposits (from sprinkler overspray)
- Paint overspray (from construction or renovation)
Surfaces It Works On
| Surface | PSI Range | Notes |
|---|---|---|
| Concrete driveway | 2,500-3,500 | The workhorse application |
| Concrete walkways | 2,500-3,500 | Same as driveways |
| Natural stone (hard) | 1,500-2,500 | Granite, bluestone OK |
| Brick | 1,500-2,500 | Lower PSI, wider nozzle |
| Interlock pavers | 1,000-1,500 | Low pressure + re-sand after |
Power Washing (When You Actually Need Heat)
Power washing adds a heating element to the machine, bringing water temperature up to 200°F. This is significant because heat breaks down petroleum-based contaminants that cold water can't touch.
When Hot Water Matters
- Oil stains on garage floors or driveways — motor oil, hydraulic fluid
- Grease around commercial kitchens — restaurant exhaust areas
- Chewing gum removal — from sidewalks and public areas
- Heavy industrial grime — factories, loading docks
- Paint prep on commercial buildings — when you need perfectly clean surfaces for repainting
Notice a pattern? These are almost all commercial and industrial applications. Your residential driveway with salt stains and dirt doesn't need heated water.
Soft Washing (The Method Most People Forget)
This is actually the most important distinction for homeowners. Soft washing uses low pressure (under 500 PSI) combined with biodegradable cleaning solutions.
Surfaces That REQUIRE Soft Washing
| Surface | Why Soft Wash | Damage from High Pressure |
|---|---|---|
| Vinyl siding | Water gets behind panels | Moisture damage, mold, panel cracking — $3,000-$8,000 |
| Wood deck | Splinters and erodes grain | Splintered surface, shortened lifespan — $2,000-$5,000 |
| Painted surfaces | Strips paint instantly | Full repaint needed — $3,000-$10,000 |
| Roof shingles | Blasts off granules | Void warranty, shortened life — $8,000-$15,000 |
| Stucco | Pits and chips surface | Stucco repair — $2,000-$5,000 |
| Composite deck | Can mar the surface | Permanent marks — $3,000-$8,000 |
| Soft stone (limestone, sandstone) | Erodes the surface | Permanent damage — irreversible |
The Right Method for Every Surface
A professional doesn't use one method for everything. Here's what we use at MANTLE:
| Your Surface | Our Method | Why |
|---|---|---|
| Concrete driveway | High pressure (3,000 PSI) | Concrete can handle it. Gets deepest clean. |
| Interlock pavers | Low pressure (1,200 PSI) + re-sand | Protects polymeric sand joints |
| Vinyl siding | Soft wash (400 PSI + solution) | Cleans without water intrusion |
| Wood deck | Soft wash (500 PSI + wood cleaner) | Cleans without splintering |
| Brick | Low pressure (1,500 PSI, wide fan) | Cleans mortar joints without erosion |
| Natural stone patio | Assessed individually | Depends on stone type and condition |
| Fence (wood) | Soft wash (500 PSI) | Cleans without wood damage |
| Fence (vinyl) | Soft wash (400 PSI + solution) | Same as siding |
Toronto-Specific Considerations
Salt Season Creates Unique Challenges
Toronto driveways endure 5+ months of road salt. Salt doesn't just sit on the surface — it penetrates concrete pores and crystallizes. Standard cold-water pressure washing at the right PSI removes salt effectively. Hot water doesn't help here.
Freeze-Thaw Concrete
Toronto's freeze-thaw cycles create micro-cracks in concrete. Aggressive pressure washing can widen these cracks. A professional adjusts PSI based on concrete condition — something a hot water machine won't help with.
Hard Water Areas
Parts of the GTA have very hard water (Halton: 170+ mg/L, Durham: 150+ mg/L). Using tap water for pressure washing can leave mineral deposits. Professional equipment with water treatment prevents this.
How to Choose a Pressure Washing Company
- Ask what methods they use for different surfaces — if they say "same pressure for everything," walk away
- Ask about interlock specifically — they should mention re-sanding and lower pressure
- Check insurance — $2M liability minimum
- Ask for before/after photos — from real jobs, not stock photos
- Get a written quote — not a phone estimate without seeing the property
Get the Right Method for Your Home
We assess every surface before cleaning. No damage. Guaranteed.
Get Free Estimate →Related Guides
Pressure Washing Cost in Toronto →
Interlock Driveway Cleaning Guide →
All MANTLE Pricing →
ClearCoat™ Purified Water Technology →