1. Why Exterior Cleaning Matters
Mould, mildew, pollen, and airborne pollutants degrade paint, trap moisture, and erode siding. Routine washing preserves curb appeal, extends coating life, and helps maintain property value.
2. Ideal Cleaning Frequency
- Vinyl or aluminium siding: every 12 months (sooner if shaded).
- Painted wood or fibre-cement: every 12–18 months.
- Stucco or brick: every 18 months.
Book sooner if you see green film, black streaks, or chalky residue.
3. Seasonal Schedule at a Glance
| Season | Key Focus |
| Spring | Pollen flush, gutter check |
| Summer | Spot-clean algae on shaded walls |
| Autumn | Leaf debris removal, prep for holiday lighting |
| Winter | Inspect irrigation overspray; plan next annual wash |
4. Safety Gear Checklist
Eye protection, nitrile gloves, non-slip footwear, and hearing protection if using gas-powered pumps.
5. Equipment Basics
Low-pressure washer (1,200–2,000 PSI) with 40° fan tip, garden hose with back-flow preventer, extension pole, and soft-bristle brush.
6. Detergent Selection
An eco-friendly surfactant blended with sodium hypochlorite (SH) below 1 % on the wall effectively kills algae without stripping paint. Avoid high-pH household bleach.
7. Plant and Landscape Protection
Pre-wet all greenery, cover delicate shrubs with breathable fabric, and rinse thoroughly after washing.
8. Water Source Preparation
Check hose bibs for leaks, verify backflow valve operation, and ensure supply delivers 2–4 GPM for consistent pressure.
9. Pre-Wash Inspection
Look for loose siding, cracks, failing caulk, or flaking paint. Repair minor defects 48 hours before washing.
10. Soft-Wash Procedure (Bottom-Up Application)
- Wet plants.
- Apply detergent bottom-up in eight-foot passes.
- Allow 5–10 minutes dwell time (keep surface damp).
- Agitate stubborn spots.
- Rinse top-down until runoff is clear.
11. High-Pressure Warning Zones
Never exceed 600 PSI on painted wood, window frames, or soft woods. High pressure can etch surfaces and force water behind cladding.
12. Post-Wash Inspection
When walls are dry, note any remaining stains, chipped paint, or caulk gaps. Touch up coatings within 48 hours for best adhesion.
13. Spot Treatment for Stubborn Stains
- Rust or irrigation stains: oxalic acid gel, dwell 5 minutes.
- Red clay: mild acidic cleaner with brush agitation.
- Oxidation (chalky residue): specialised oxidation remover wiped by hand.
14. Preventive Measures Between Washes
Keep gutters clear, redirect downspouts away from siding, trim vegetation at least 12 inches from walls, and adjust lawn sprinklers to minimise overspray.
15. Algae Prevention Tips
Improve airflow by trimming shrubs, increase sun exposure on shaded walls, and install zinc or copper strips near roof edges where persistent growth occurs.
16. Paint & Sealant Maintenance
Check paint annually for fading, blistering, or peeling; repaint or reseal high-traffic sides every 5–7 years to maintain a protective barrier.
17. Weather Considerations
Avoid washing in direct midday sun to prevent rapid drying and streaking. Postpone service if wind exceeds 15 mph or thunderstorms are forecast.
18. DIY vs Professional Service
DIY is feasible for single-story homes with access to safe equipment. Hire professionals for multi-story properties, delicate historic exteriors, or heavy staining that requires advanced chemistry.
19. Common Mistakes to Avoid
- Using a zero-degree nozzle on siding.
- Spraying upward at lap joints.
- Letting detergent dry on hot surfaces.
- Working from a ladder with a pressurised wand in hand.
20. Record-Keeping & Maintenance Log
Document wash dates, detergents used, pressure settings, and any repairs. A simple spreadsheet helps schedule future cleanings and warranty paint work.
21. Partnering With Around The Bend Pressure Washing
We offer free exterior inspections, soft-wash expertise tailored to Florida’s climate, and a maintenance reminder programme that notifies you when service is due.
For a deeper look at keeping your exterior clean and well-maintained, you can review our full guide to house washing.
Questions or ready to schedule?
850-888-2105
[email protected]
1114 Thomasville Rd. Suite E-6, Tallahassee, FL 32303
