Ghana's combination of harmattan dust, heavy rainfall, and humidity means exterior surfaces get dirty faster than almost anywhere else. Driveways turn grey with grime, walls develop algae streaks, and roofs collect moss within months of being cleaned. Pressure washing restores all of these surfaces quickly and effectively — but knowing which method to use on which surface matters.
Hard Wash vs Soft Wash: What's the Difference?
Hard Washing
High-pressure water alone. Best for tough surfaces that can take the force: concrete driveways, interlock pavers, tiled compounds, and stone paths. Removes embedded dirt, oil stains, algae, and moss effectively.
Soft Washing
Lower pressure combined with a gentle cleaning solution. Essential for surfaces that can't take high pressure: painted exterior walls, render, roofing sheets, and delicate tiles. The cleaning solution does the work — the low pressure just rinses. Effective at removing algae, mold, and lichen without any surface damage.
| Surface | Recommended Method | Notes |
|---|---|---|
| Concrete driveway | Hard wash | Oil stain pre-treatment recommended |
| Interlock pavers | Hard wash | Check joint sand after washing |
| Painted exterior walls | Soft wash | High pressure will strip paint |
| Roofing sheets / aluminium | Soft wash | High pressure can dislodge sheets |
| Tiled compound | Hard wash | Great for grout blackening |
| Pool decks & patios | Hard wash | Restores non-slip texture |
| Rendered / plastered walls | Soft wash | Hard wash can crack render |
Why Harmattan Makes Exterior Cleaning Urgent
Between November and March, fine Sahara dust carried by the harmattan wind settles on every outdoor surface in Accra. On its own this is just cosmetic, but when combined with morning dew or light rain, the dust forms a film that bonds to surfaces. On walls, this creates the greying effect that makes even newly painted buildings look tired within a season. On driveways, it mixes with vehicle oil and becomes a persistent stain. Professional pressure washing post-harmattan removes this film completely — restoring surfaces to their original appearance.
Pressure Washing Costs in Accra (2025)
| Job | Price |
|---|---|
| Small driveway / patio (up to 50 sqm) | GHS 250 |
| Medium compound (50–150 sqm) | GHS 450 |
| Exterior wall — per storey (soft wash) | From GHS 600 |
| Roof soft wash (bungalow) | GHS 700–1,200 |
What's Included in a Professional Pressure Wash
- Pre-treatment of oil stains and algae before washing
- Industrial pressure washer (not a consumer garden hose attachment)
- Edge and corner detailing
- Safe runoff management so water doesn't pool against walls or foundations
- Post-wash inspection of the cleaned area
When to Schedule
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