Top 5 Myths About Pressure Washing, Busted
Pressure washing is one of the most effective ways to refresh a home's exterior, but there’s a lot of misinformation floating around. In this post, we’ll debunk some of the top five myths so you’ll know exactly what PSI, detergents, and techniques really make the difference.
Pressure Washing Myths:
Myth #1: The higher the PSI, the cleaner the house
Busted: Too much pressure can gouge wood grain, etch concrete, and strip paint or sealant.
Best practice: Match PSI to surface hardness:
- Soft surfaces (vinyl, stucco, siding, asphalt shingles): Low PSI + soft wash detergents
- Medium surfaces (concrete sidewalks, driveways): 2,000–3,000 PSI
- Heavy-duty surfaces (industrial concrete, stone): 3,000+ PSI with surface cleaners
Myth #2: Cold water is just as good as hot water
Busted: Hot water (180–200 °F) breaks down oil, grease, and organic stains far faster.
When to choose hot: Drive-thrus, deep oil stains, restaurant exteriors, garage floors.
When cold suffices: mildew, pollen, loose dirt on siding or roofs.
Myth #3: Detergents are optional, pressure alone will do the job
Busted: Surfactants lift and emulsify grime so the water can push it away.
Tip: Use biodegradable cleaners tailored for:
- Algae & mildew (fungicide & soft-wash soap)
- Oil & grease (alkaline degreaser)
- General dirt (neutral-pH cleaner)
Myth #4: Any nozzle will get the job done
Busted: Nozzle angles control spray force and coverage:
- 0° (pinpoint): Ultra-powerful but risky, can damage most surfaces.
- 15°–25°: Ideal for concrete and hard surfaces.
- 40°–65°: Gentle fan spray for siding, decks, delicate trim.
Myth #5: You can DIY your way to professional results
Busted: Improper technique risks injury, property damage, and trapped moisture (leading to potentially unseen rot).
Why professional services matter:
- Experience: Skilled technicians know how to adjust PSI, detergents, and nozzle angles for each surface in real time.
- Equipment Quality: Professional-grade soft wash systems, surface cleaners, and extension wands deliver better and safer results.
- Safety Protocols: Proper ladder stabilization, containment methods, and chemical handling protect your property and the crew.
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