Commercial Pressure Washing: What to Clean, How Often, and What to Avoid
Key Takeaways
- Hard surfaces like concrete take pressure; siding, EIFS, and painted surfaces need soft washing.
- Dock aprons and dumpster pads are the highest-value targets — they are the dirtiest and the most visible to inspectors.
- Twice a year is a reasonable baseline for high-traffic exterior concrete.
- Wrong nozzle and wrong distance cause more damage than wrong pressure.
Pressure washing vs soft washing
| Surface | Method | Notes |
|---|---|---|
| Concrete drives, aprons, sidewalks | Pressure + surface cleaner | Even results, no wand striping |
| Dumpster pads | Pressure + degreaser | Hot water helps break grease |
| Brick and block | Low pressure + detergent | Avoid mortar erosion |
| Painted metal buildings | Soft wash | High pressure strips coating |
| EIFS / stucco | Soft wash only | Pressure drives water behind the system |
| Awnings and signage | Soft wash | Pressure delaminates fabric and vinyl |
Recommended frequency
- Dock aprons and truck courts: every 6 months
- Dumpster pads: quarterly, or monthly for food operations
- Building entries and sidewalks: quarterly for retail, semiannually otherwise
- Full building exterior: annually, or when mildew streaking appears
Common mistakes that cause damage
- Using a zero-degree tip on concrete — it etches permanent lines.
- Holding the wand too close to painted or coated surfaces.
- Washing hot surfaces in direct sun so detergent dries before rinse.
- Ignoring drainage — wash water carrying oil or detergent into storm drains can violate local stormwater rules.
- Skipping pre-treatment on organic growth, which then returns within weeks.
Why it belongs in your facility plan
Exterior condition is the first impression for customers, auditors, and prospective tenants. It is also a safety issue: grease and algae on walkways and dock aprons are slip hazards, and clean surfaces make spills and damage visible instead of hidden under grime.
Apex High Dusting Solutions serves warehouses, distribution centers, manufacturing plants, retail spaces, gyms, offices, and places of worship across Richmond and central Virginia.
FREQUENTLY ASKED QUESTIONS
How often should a commercial building be pressure washed?
High-traffic exterior concrete benefits from cleaning every six months, dumpster pads quarterly, and full building exteriors annually or when streaking appears.
What PSI is safe for commercial concrete?
Concrete generally tolerates 3,000–4,000 PSI with a rotating surface cleaner, while painted and coated surfaces should be soft washed at low pressure with detergent.
Is soft washing better than pressure washing?
Neither is better overall. Soft washing is correct for siding, stucco, painted metal, and roofs; pressure washing is correct for durable hard surfaces like concrete.
LOOKING FOR PRESSURE WASHING SERVICES?
Apex High Dusting Solutions serves Richmond and central Virginia. We walk the building before we quote.