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Deck & Fence Cleaning · Northern Virginia
Deck & Fence Cleaning That Brings Gray Wood Back to Life in Northern Virginia
Sun, rain, pollen, and foot traffic turn NoVA decks and fences gray and slick. Our wood-safe soft wash strips the grime and mildew without furring the grain — and preps the surface perfectly for stain or seal.
The Short Answer
Most Northern Virginia deck cleanings run $200–$500 and fence cleaning prices at $3–$6 per linear foot, depending on size, material, and buildup. We use wood-safe low pressure plus brighteners that restore natural color without damage — and leave the surface pH-neutral and stain-ready. Free walkthrough, written line-item quote in 24–48 hours.
Timing tip: schedule cleaning 2–3 dry days before you plan to stain and the wood hits perfect moisture range on your timeline. Cleaning the fence on the same visit as the deck shares all the setup cost — the cheapest either will ever be.
What's Included
Every Job, Done the Right Way
Our deck & fence cleaning service covers everything the job actually needs — matched to your surfaces, never one-size-fits-all.
- Wood-safe low-pressure wash — lifts gray and grime without furring or etching the grain.
- Mildew & algae root treatment — growth is killed, not just rinsed off to return in weeks.
- Wood brightener application — restores natural color and neutralizes pH for staining.
- Composite-safe process — Trex and similar decking cleaned without voiding warranties.
- Railings, stairs & spindles — the detail work most crews skip.
- Fence line detail — post caps, gate hardware, and both faces where accessible.
- Landscaping protection — beds and plantings covered and rinsed.
- Stain-readiness assessment — honest advice on timing and whether your wood is ready.
Timeline: most decks finish in a half day; staining is possible after 48–72 dry hours. Best seasons: late spring through early fall, timed to your staining plans.
Wood, Composite & Vinyl — Each Cleaned Right
Pressure-treated pine and cedar get a true soft wash — low pressure and wood-specific cleaners that lift gray weathering without tearing up grain. Composite decking like Trex needs gentler chemistry than wood: harsh cleaners void composite warranties, so we use the manufacturer-approved approach. Vinyl fencing rinses bright with the same soft-wash detergents used on siding.
What drives your price and timeline: deck square footage and fence linear feet, material, condition (years of neglect take restoration passes; annual upkeep is quick), and whether you want stain-prep brightening. Most decks finish in a half day — and cleaning the fence on the same visit shares the setup cost.
How We Work
Our Deck & Fence Cleaning Process
Consultation
We walk your property, identify each surface material, oil stains or algae buildup, and any landscaping or access concerns before quoting.
Proposal
A written, line-item quote within 24–48 hours — surface-specific method, price tier, and scheduling options.
Wash & Rinse
Correct PSI and detergent for each surface, applied with proper technique, then a thorough rinse — protecting plants, pets, and adjacent surfaces.
Local Knowledge
What Northern Virginia Decks & Fences Actually Deal With
- Humidity keeps horizontal wood dampNoVA's humid summers are hardest on deck boards — the horizontal surfaces that hold water after every rain and dew cycle are where mildew establishes first.
- Pollen feeds spring mildew bloomsHeavy oak and pine pollen isn't just yellow film — it is food for the mildew that turns boards gray and slick by mid-summer.
- Shade-side fencing goes greenNorth-facing fence runs and sections under tree cover grow visible green algae within a season or two of their last cleaning.
- Freeze-thaw cycles open the grainWinter moisture that soaks into unsealed gray wood expands as it freezes — cleaned and sealed wood sheds that water instead.
- Stain fails fast over dirty woodStain applied over gray, mildewed boards peels within a season. Proper cleaning and brightening doubles the life of any stain job.
- HOAs flag graying fencesAppearance standards across Fairfax, Loudoun, and Prince William communities routinely cite weathered fencing — a cleaning usually resolves the letter without replacement.
Why Lawn Theory
Why Homeowners Choose Us For Deck & Fence Cleaning
Wood-Safe. Always.
Low pressure and wood-specific cleaners — never the high-pressure blasting that furs grain and carves permanent lines.
Wood-Safe. Always.
Low pressure and wood-specific cleaners — never the high-pressure blasting that furs grain and carves permanent lines.
Wood-Safe. Always.
Low pressure and wood-specific cleaners — never the high-pressure blasting that furs grain and carves permanent lines.
Wood-Safe. Always.
Low pressure and wood-specific cleaners — never the high-pressure blasting that furs grain and carves permanent lines.
Deck & Fence Cleaning Across Northern Virginia
Deck & Fence Cleaning across Arlington, Alexandria, Fairfax, Loudoun & Prince William counties. Pick a county to see where we work.
Get My Free EstimatePopular Areas in Fairfax County
Do not see your town? We likely serve it — just ask.
What Neighbors Say
Trusted on Homes Like Yours
“We hired Lawn Theory for pressure washing and landscaping. It is like we have a brand new home. Five stars!”
“They explained why they'd soft-wash our deck instead of blasting it with a wand, and I appreciated that. Came out clean without a single splintered board.”
“Written quote same day, on time for the appointment, and our HOA letter about the driveway staining is officially resolved. Would use again for our patio next.”
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Questions
Deck & Fence Cleaning — Common Questions
How much does deck cleaning cost in Northern Virginia?
Most decks run $200–$500 depending on size and condition; fences typically price at $3–$6 per linear foot. Cleaning both together, or bundling with house washing, lowers the combined price — quotes are always written and line-item. A deck-and-fence combined visit is the most common booking — the equipment and detergents overlap, and the property reads as one refreshed space afterward.
Will pressure washing damage my wood deck?
High pressure absolutely can — it furs the grain and carves lines that never come out. We use low-pressure washing plus wood-specific cleaners, which lifts the gray without touching sound wood fibers. The test is simple: if a deck board’s gray lifts under low pressure and cleaner, the wood underneath is sound — furring only happens when pressure substitutes for chemistry.
Can you clean composite decking like Trex?
Yes. Composite needs gentler chemistry than wood — harsh cleaners void composite warranties. Our composite process removes mildew film and restores color safely. Composite also holds heat differently, so we rinse in sections to keep chemistry from drying on the surface mid-clean.
Should I clean my deck before staining it?
Always. Stain applied over gray, dirty wood peels within a season. Clean, brightened, pH-neutralized wood takes stain evenly and holds it for years — we leave your deck exactly in that state. We can also apply the brightener-and-neutralize step on its own if you cleaned recently and just want the wood stain-ready.
How long after cleaning until I can stain?
Usually 48–72 hours of dry weather so moisture content drops into staining range. We time cleanings around your staining plans when you have them. If rain surprises the schedule, staining simply waits for the next dry window — the cleaning result holds for weeks.
How often should decks and fences be cleaned in Northern Virginia?
Every 1–2 years. Northern Virginia humidity and pollen are hard on horizontal wood surfaces especially — regular cleaning keeps decks slip-safe and doubles the life of stain jobs. Slip-safety matters here too: algae film on shaded deck boards is the backyard version of the mossy sidewalk problem.
Do you also stain or seal after cleaning?
We focus on the cleaning and prep, and we give you a straight assessment of whether your wood is ready. Many customers handle staining themselves on perfectly prepped wood — that is fine by us. If you’d rather hand it off entirely, we’re glad to recommend staining partners we’ve seen do it right in this area.
Ready When You Are
That Gray Wood Is Not Dead — It Is Just Dirty
Written, line-item quotes in 24–48 hours. No pressure, no generic ballparks.