Pressure Washing Houston • Patio & Pool Deck Cleaning
Patio & Pool Deck Cleaning
Pool decks and patios in Houston accumulate algae faster than any other surface — they stay wet longer and sit in part shade. Slip-safe cleaning with biocide treatment and the right pressure for stamped, coated, or standard concrete.
Executive Summary: Patio & Pool Deck Cleaning
Patio and pool deck cleaning covers the pressure washing of Houston outdoor concrete, pavers, brick, travertine, and stamped concrete surfaces. Pool decks and patios are the most algae-prone surfaces around a Houston home — they stay wet from pool water and Houston rain and sit in part shade.
Standard patio/pool deck system: biocide or algaecide pre-treatment → medium pressure (1,500–2,500 PSI) on concrete → soft fan-nozzle on stamped or coated surfaces → rinse. Most jobs: 1–3 hours. Estimated cost: $100–$1,500.
Stamped and coated concrete pool decks must not be washed at full pressure. The decorative surface texture and coating can be abraded by a surface cleaner or high-pressure nozzle. We use a fan nozzle at reduced pressure on stamped and coated surfaces.
The Fast Facts on Patio & Pool Deck Cleaning
What does patio and pool deck washing cost?
The short answer is an estimated $100 to $1,500 depending on area size, surface type, and algae severity. A small standard concrete patio at the lower end; a large stamped concrete pool deck with heavy algae treatment at the upper end.
What pressure is safe for a pool deck?
The short answer is medium pressure (1,500 to 2,000 PSI) with a fan nozzle for standard concrete pool decks. Stamped concrete and decorative coatings require lower pressure and a wider fan angle to avoid abrading the surface finish. We assess the deck surface before washing.
Can you clean travertine or natural stone patios?
The short answer is yes, using low pressure and a pH-neutral stone cleaner. Acidic cleaners etch travertine. High pressure on natural stone can dislodge grout or damage the finish. We use stone-appropriate chemistry and technique.
Recent Houston Patio & Pool Deck Cleaning Jobs
Three recent pressure washing jobs across Greater Houston.
Pool Deck Algae Removal — Katy (77494)
March 2026 · 600 sq ft concrete pool deck. Heavy algae along shaded north edge. Algaecide dwell, 2,000 PSI fan nozzle. Pool deck slip-safe and clean. 2 hours.
Stamped Concrete Patio — Memorial (77079)
November 2025 · 380 sq ft stamped concrete outdoor living area. Green mildew in texture pattern. Low pressure (1,200 PSI), fan nozzle, specialty concrete cleaner. Texture preserved. 1.5 hours.
Travertine Pool Surround — River Oaks (77019)
January 2026 · 480 sq ft travertine pool surround. Calcium deposits and organic staining. pH-neutral travertine cleaner, low-pressure rinse. Stone finish undamaged. 2.5 hours.
All prices are estimates. Final scope confirmed in writing before work begins.
Pool Deck Algae Is a Slip-and-Fall Risk Every Houston Summer
Slippery algae on pool deck surfaces
Green algae on a wet pool deck in Houston summer is a genuine fall risk. Algaecide treatment before washing kills the organism. Pressure-only washing moves it off the surface temporarily — it regrows from remaining spores within one season.
Stamped concrete texture damaged by surface cleaner
Rotary surface cleaners abrade the decorative finish on stamped concrete and remove protective coatings. We use a reduced-pressure fan nozzle on all stamped or coated surfaces.
Pool water contaminated by chemical runoff
Biocide and detergent products used for pool deck washing must be managed away from the pool during application. We direct all rinse water away from the pool and use pool-safe chemistry where required.
Schedule a Walkthrough
We assess surface type and algae level before writing a number. Stamped and coated surfaces are noted before any equipment is staged.
Our Process: Clean the Right Way
- 1Surface Assessment & Chemical SelectionWe assess stain type, surface material, and contamination level before selecting the correct pressure, detergent, or biocide solution. High pressure on the wrong surface causes etching, splintering, or shingle granule loss — we confirm the correct approach before any water is applied.
- 2Pre-Treat, Wash & RinseDetergent or biocide solution applied first and allowed to dwell before pressure washing — this breaks down contaminants at the surface level rather than forcing them deeper with water alone. Thorough rinse removes all residue and detergent from the surface.
- 3Final Inspection & Site CleanWe walk every cleaned surface with you before leaving. Waste water is directed away from storm drains and landscaping. All hoses and equipment removed from the property. Written completion confirmation available on request.
What to Expect: Your Service Timeline
| Stage | When | What Happens |
|---|---|---|
| Arrival & setup | On-site | Equipment staged; plants pre-soaked; outlets protected |
| Chemical pre-treat | 15–30 min | Detergent or biocide applied and allowed to dwell on surface |
| Pressure wash | 1–3 hours | Surface washed at correct PSI; problem areas addressed with surface cleaner |
| Rinse & inspect | 30 min | Thorough rinse; surface inspected for remaining staining |
| Site clean & departure | 15 min | Equipment removed; waste water cleared; property returned clean |
Most patio and pool deck jobs: 1 to 3 hours. Large deck areas with multiple surface types may extend to 4 hours.
The Right Time to Schedule Patio & Pool Deck Cleaning
Pool season is starting.
Algae that built up over winter on the pool deck is both unsightly and a slip risk. A pre-season clean takes 1 to 3 hours and makes the outdoor space usable from the first warm day.
You are sealing or painting the patio or deck.
Sealers and deck coatings must be applied to clean, dry surfaces. Washing is the required first step before any coating application.
The HOA or rental inspection is coming up.
Pool decks and patio surfaces are commonly noted in HOA inspections. A pre-inspection wash addresses the finding before the visit.
The Henry Contractor Difference
Right pressure for the surface
Power washing concrete at 3,000 PSI is correct. The same pressure on painted siding strips paint. On shingles, it shreds granules. We match PSI to surface type — and switch to soft wash (under 500 PSI with chemical dwell) for surfaces that require it.
Biocide before the rinse
Pressure washing mildew without biocide treatment moves the organism around the surface without killing it. It regrows faster on a freshly disturbed surface. We apply biocide solution first, allow dwell time, then rinse — every time mildew is present.
No damage to landscaping or electrical
Pre-soak all plantings before washing, cover all exterior outlets, and direct waste water away from storm drains and plant beds. We protect adjacent surfaces as part of standard prep — not an afterthought.
Transparent Pricing for Patio & Pool Deck Cleaning
| What Drives the Cost | Standard vs. Premium Service | What to Know Before Booking |
|---|---|---|
| Square footage and surface type; a standard driveway is different scope from a large property with multiple surface types | Standard: one detergent type, single pass. Premium: biocide pre-treat + detergent + high-pressure rinse for heavily contaminated surfaces | Active mold or algae requires biocide dwell time — adds to the service window |
| Staining severity; light surface grime vs. embedded oil, rust, or heavy mildew growth | Standard: standard pressure, single rinse. Premium: hot water or rotary surface cleaner on heavy concrete staining | Height or restricted access adds staging time and equipment |
| Chemical requirements; standard wash vs. biocide, degreaser, or oxidizing cleaner | Standard: water only or mild detergent. Premium: targeted chemical for stain type | Environmental compliance for commercial sites: waste water containment may be required |
Patio and pool deck cleaning: $100–$1,500 depending on area and surface type. Written quote fixed before work starts.
Get an Exact Number
We assess surface type, staining level, and area before writing a number.
Patio & Pool Deck Cleaning vs. Garden Hose vs. Rental Equipment
| Feature | Henry Contractor | Garden Hose | Rental Equipment |
|---|---|---|---|
| Pressure & Technique | Matched to surface type; soft wash where required; correct PSI by material | Garden hose pressure inadequate for embedded stains or mildew | Fixed PSI regardless of surface; etching or surface damage common |
| Chemical Treatment | Biocide or detergent applied to dwell before rinse; stain type matched to chemical | No chemical treatment; water only; mildew regrows quickly | Generic soap; not matched to stain type |
| Surface Safety | Surface-specific technique; no high pressure on shingles, painted siding, or wood grain | Nozzle distance inconsistent; etching or wood splintering common | No surface assessment; damage to softer surfaces common |
| Waste Water Management | Plant beds pre-soaked; outlets covered; waste water directed from drains | Runoff unmanaged | No containment; chemical runoff into storm drains or plant beds |
| Pricing Transparency | Written quote per surface; fixed before work starts | Material and time costs unpredictable | Low per-surface rate; add-ons for chemicals and setup common |
Who We Partner With
Houston Homeowners
Pool decks and patios are the most-used outdoor surfaces in Houston. Clean surfaces with algae removed make the space safe and more enjoyable.
Property Managers
HOA and rental pool decks require regular cleaning for safety and compliance. Scheduled seasonal washing prevents heavy buildup.
Pre-Sale Sellers
Clean patios and pool decks photograph dramatically better and show the outdoor living area at its best.
Proudly Serving Greater Houston
We proudly provide professional pressure washing services to homeowners, businesses, and property managers throughout the Greater Houston area, including: The Woodlands, Katy, Sugar Land, Pearland, Cypress, Memorial, and surrounding communities.
See our mold and mildew removal service or return to the pressure washing hub.
Frequently Asked Questions
The short answer is an estimated $100 to $1,500 depending on area, surface type, and algae severity. Small concrete patios at the lower end; large decorated pool decks at the upper end.
The short answer is low to medium pressure with a wide fan nozzle — typically 1,000 to 1,500 PSI. Rotary surface cleaners and high-pressure nozzles can abrade the decorative finish on stamped concrete. We assess the surface before washing.
The short answer is algaecide or biocide treatment applied before pressure washing. The treatment kills the organism and prevents rapid regrowth. Pressure-only washing removes the visible algae without killing it.
The short answer is 48 to 72 hours — the surface must be completely dry before any sealer or deck coating is applied. Sealer applied over damp concrete does not bond correctly and turns white or opaque.
Yes, with medium fan-nozzle pressure and attention to joint sand. We use medium pressure on a fan setting and assess paver joint condition before washing. Surface cleaner heads can dislodge polymeric sand in paver joints.
Ready to get your surfaces clean?
Fill out the free estimate form at the top of the page to get started, or call us directly to schedule your on-site assessment.