Pressure Washing Houston • Deck & Fence Power Washing
Deck & Fence Power Washing
Houston decks and fences stay clean 3 to 4 months before mildew and grime return. Power washing prepares wood for stain penetration and extends coating life — dirty wood that gets stained holds the stain less than a year.
Executive Summary: Deck & Fence Power Washing
Deck and fence power washing covers the cleaning of wood, composite, and metal exterior structures in Houston — including pre-stain preparation, mildew removal, and general surface restoration. Wood decks and fences must be clean before stain or paint is applied — stain on contaminated wood does not penetrate and peels within one season.
Standard wood deck system: wood-safe detergent pre-treat + medium pressure (1,200–1,800 PSI) wash + rinse + recommended 48–72 hour dry before staining. Composite: lower pressure with composite cleaner. Most jobs: 1–3 hours. Estimated cost: $80–$800.
Composite decking must not be washed at wood-deck pressure. Most composite manufacturers specify a maximum 1,500 PSI with a wide fan nozzle. Rotary surface cleaners can etch composite surfaces.
The Fast Facts on Deck & Fence Power Washing
What does deck and fence washing cost?
The short answer is an estimated $80 to $800 depending on area, material, and mildew severity. A small wood deck or a short fence run at the lower end; a large composite deck plus a long fence at the upper end.
What pressure is safe for a composite deck?
The short answer is under 1,500 PSI with a wide fan nozzle — most composite manufacturers specify this maximum. Rotary surface cleaners can etch and scratch composite surfaces. We confirm the deck material before staging any equipment.
How long after washing should you wait before staining?
The short answer is 48 to 72 hours for wood decks — the wood must be completely dry before stain is applied. Stain applied to damp wood does not penetrate and peels within one season. We always note the dry time recommendation after washing a deck that is being prepared for staining.
Recent Houston Deck & Fence Power Washing Jobs
Three recent pressure washing jobs across Greater Houston.
Wood Deck Pre-Stain Wash — The Heights (77008)
March 2026 · 320 sq ft cedar deck. Mildew throughout, gray weathering on top surface. Wood-safe detergent, 1,600 PSI medium wash. Deck color refreshed. Staining crew confirmed 72 hours later.
Composite Deck Clean — Katy (77494)
November 2025 · 420 sq ft composite deck. Mildew and general soiling. Composite cleaner, 1,200 PSI wide fan nozzle. Manufacturer spec followed. Surface clean without scratching.
Cedar Privacy Fence Wash — Sugar Land (77479)
January 2026 · 160 linear ft cedar fence. Heavy mildew on north-facing sections. Biocide pre-treat, medium pressure wash. Surface ready for stain application within 72 hours.
All prices are estimates. Final scope confirmed in writing before work begins.
Stain Over a Dirty Deck Peels in One Season
Deck stain peeling within a year
Stain applied to a dirty, mildewed, or contaminated deck surface does not penetrate the wood grain. It bonds to the contamination layer and peels with it. Washing removes the contamination so stain contacts clean wood and penetrates as designed.
Composite deck surface etched or scratched after washing
Rotary surface cleaners and direct high-pressure nozzles etch composite decking. We confirm the material before staging equipment and use the correct technique for composite surfaces.
Wood fence bleached or splintered by pressure
High-pressure direct nozzle on cedar or pine fence boards raises grain and can cause splintering. Medium pressure on a fan nozzle at the correct distance cleans without damaging the wood surface.
Schedule a Walkthrough
We confirm surface material before staging equipment. Composite decks and wood decks use different techniques.
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 deck and fence jobs: 1 to 3 hours. Allow 48 to 72 hours dry time before applying stain or sealant.
The Right Time to Schedule Deck & Fence Power Washing
You are staining or painting the deck or fence this season.
Washing is the required first step before any stain, sealant, or paint. Waiting until the week before staining is fine — wash and then allow 48–72 hours of dry time.
The deck looks gray and weathered.
Gray weathered wood has oxidized on the surface. Medium pressure washing with a wood cleaner restores much of the color before stain is applied.
Mildew is visible on fence boards.
Mildew on fence boards that is washed without biocide treatment regrows within one season. Biocide treatment in the wash is standard scope on any mildewed wood surface.
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 Deck & Fence Power Washing
| 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 |
Deck and fence washing: $80–$800 depending on area and material. Written quote fixed before work starts.
Get an Exact Number
We assess surface type, staining level, and area before writing a number.
Deck & Fence Power Washing 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
Deck and fence washing before staining is the maintenance step that makes the stain last. We combine washing and stain prep into one visit where possible.
Interior Designers & Contractors
Pre-stain deck washing is a standard spec step. We schedule around the staining contractor’s timeline.
Property Managers
Rental properties with wood fences and decks need periodic maintenance washing. Annual washing before the staining cycle keeps surfaces in good condition.
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 fence painting service or return to the pressure washing hub.
Frequently Asked Questions
The short answer is an estimated $80 to $800 depending on area, material, and mildew severity. Small wood decks or short fence runs at the lower end; large composite decks or long fence runs at the upper end.
The short answer is 48 to 72 hours. Wood decks must be completely dry before stain is applied — moisture trapped in the wood prevents stain from penetrating and causes it to peel within one season.
The short answer is under 1,500 PSI with a wide fan nozzle. Most composite deck manufacturers specify this maximum. Rotary surface cleaners can etch the surface. We confirm the deck manufacturer guidelines before starting any composite deck wash.
Yes. Gray weathered wood has oxidized on the surface. Washing with a wood cleaner at medium pressure removes the gray oxidation layer and brightens the natural wood tone significantly. A deck brightener can be applied after washing to further restore color before staining.
Yes. Paint or stain applied to a dirty, mildewed, or contaminated fence surface does not bond to the wood — it bonds to the contamination and peels with it. Washing is the required first step before any fence coating.
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.