Domakihub How to Clean a Pool Deck: A Step-by-Step Guide
Remove algae, stains, and grime safely without damaging your deck surface.
Reviewed by Domakihub pool pros · 2026-06-23 · 5 min read
A pool deck in Greece faces a relentless combination of sun, humidity, chlorinated splash-back, and bare feet — conditions that breed algae, mineral scale, and slip hazards surprisingly fast. The video above shows a professional walk-through of the full pressure-washing process; this guide breaks down the same approach into five clear steps you can follow yourself. Whether you manage a family home, a holiday rental, or a hotel pool area, a clean deck protects guests and extends the life of the surface.
Why Pool Decks Get Dirty So Quickly
Splashed pool water carries chlorine, sunscreen residue, and body oils onto the surrounding surface every day. Combined with the warm, damp microclimate around a pool, this creates an ideal breeding ground for green algae and black mould, particularly in the shaded or north-facing sections of the deck.
Travertine, concrete, and composite pavers all respond differently to these stresses. Concrete and stone are porous and absorb stains deeply if left untreated; composite decking resists staining but traps biofilm in its texture grooves. Knowing your surface material helps you choose the right cleaner and pressure setting.
What You Need Before You Start
Gather your equipment first: a pressure washer (1,500–2,500 PSI for concrete/stone; under 1,200 PSI or a soft-wash nozzle for pavers and composites), a surface cleaner attachment if available, a stiff-bristle deck brush, a diluted bleach or pool-safe algaecide solution, a garden hose, and non-slip footwear. Keep everyone — pets included — out of the work area.
Check the weather forecast. You want at least four hours of dry time after cleaning so the surface dries completely before anyone walks on it. Avoid direct midday sun when applying chemical treatments, as fast evaporation reduces dwell time and can leave residue streaks.
How to Clean Your Pool Deck
- 1
Clear the area and rinse the surface
Remove all furniture, potted plants, toys, and pool accessories. Use a garden hose or the pressure washer on a low-fan setting to wet the entire deck. This loosens loose dirt, cools the surface, and prevents cleaning solution from drying too fast. Pay attention to drain covers — make sure they are clear so runoff has somewhere to go.
- 2
Apply a cleaning solution and let it dwell
Mix a diluted sodium hypochlorite (bleach) solution — typically one part household bleach to four parts water — or use a proprietary pool-deck cleaner. Apply it evenly with a pump sprayer or low-pressure nozzle, starting from the furthest point and working back toward the pool edge. Allow it to dwell for five to ten minutes; you should see algae and biofilm start to break down visually. Do not let the solution dry on the surface.
- 3
Scrub problem areas by hand
While the solution is still wet, work a stiff-bristle brush in a circular motion on any stubborn stains, grout lines, textured patterns, or corners the pressure washer will struggle to reach. Mineral scale from splash-back often requires a specialised calcium remover applied and scrubbed separately before the main rinse.
- 4
Pressure wash the entire deck
Fit a 25-degree or 40-degree fan nozzle (never a zero-degree pin jet near stone or pavers) and wash the deck in overlapping passes, always directing spray away from the pool to avoid flushing chemicals into the water. Keep the wand moving at a consistent speed to prevent streaking. A rotary surface cleaner attachment is ideal for large flat concrete areas and dramatically speeds up the work.
- 5
Rinse thoroughly and allow to dry
Flush all remaining cleaning solution off the deck with clean water, working it away from the pool edge and toward exterior drains. Rinse twice if the bleach concentration was high. Once the surface is fully dry — usually two to four hours in Greek summer sun — inspect for any missed stains, then consider applying a penetrating sealer to concrete or stone decks to repel future staining and reduce how often deep cleans are needed.
Rather have a pro handle it?
Get a vetted pool pro in your city — one number, booked in EN/EL/DE.
FAQ
- How often should I clean my pool deck in Greece?
- In the Greek climate, a light rinse and brush-down every one to two weeks during the swimming season keeps algae from taking hold. A full deep clean with chemical treatment and pressure washing is typically needed two to three times per season — at opening, mid-season, and closing. Holiday rentals with heavy foot traffic may need the full process monthly.
- Will bleach damage my travertine or paver pool deck?
- A diluted bleach solution (roughly 1:4 with water) is generally safe on concrete and most natural stone when rinsed off promptly. However, undiluted bleach can etch travertine or strip the colour from coloured concrete. For sensitive surfaces, use a pH-neutral or stone-safe deck cleaner instead and always test on an inconspicuous area first. Avoid bleach entirely on unsealed limestone.
- Can I clean the pool deck without a pressure washer?
- Yes. Apply the cleaning solution, let it dwell, scrub vigorously with a stiff-bristle deck brush, and rinse with a garden hose fitted with a high-pressure nozzle attachment. It takes more physical effort and more rinsing passes, but the result on lightly soiled decks is comparable. For heavy algae or deeply embedded stains, a pressure washer will save significant time and deliver a better finish.