Wood Power Wash
Deck & Fence Cleaning
Restore your deck and fence to their natural beauty. Our gentle yet effective wood washing removes years of grime, algae, and graying while preserving the integrity of the wood.
Professional Wood Washing for Seattle & Eastside Decks
Wood surfaces in the Pacific Northwest face constant assault from moisture, UV exposure, tree debris, moss, algae, and general grime. Without regular cleaning, wood decks and fences gray, stain, and deteriorate far faster than they should. Professional wood washing reverses this damage and gives your outdoor spaces new life.
A clean deck adds real value to your home — and prepares it perfectly for staining or sealing, which can add years of additional life to your outdoor wood surfaces.
Wood Washing + Staining: The Perfect Combination
A freshly washed deck is the ideal candidate for staining or sealing. We frequently work alongside deck staining contractors to prepare surfaces — or simply deliver a clean surface ready for your own project. Ask about our preferred staining contractor referrals in the Seattle and Eastside area.
Wood is the least forgiving surface we work on, because pressure damage has to be sanded out rather than washed off. The sequence is a gentle clean, then a brightener that neutralises it and pulls the tone back. That applies equally to decks, fences and cedar siding, and it is how moss comes out of the grain without furring it.
Our Wood Wash Approach
Wood requires a different approach than concrete or masonry — lower pressure, the right chemistry, and always working with the grain, not against it.
Wood Type & Condition Assessment
We identify the wood type — pressure-treated, cedar, redwood, or composite — and its condition, then select pressure settings well below what hard surfaces take.
Pre-Treatment Soak (When Needed)
For decks with significant moss or mildew, we apply a pre-treatment soak to break down biological growth before washing — dramatically improving the result.
Low-Pressure Grain-Safe Wash
We clean with calibrated low pressure and appropriate solutions, working with the grain to remove growth, tannin stains, and gray without raising grain or splintering.
Prep for Stain or Seal
We leave the surface clean and grain-opened, perfectly prepped to accept stain or sealant evenly. For best results, stain within 48–72 hours of washing.
What We Clean
From decks to docks, we clean every kind of exterior wood surface:
Wood Decks
Pressure-treated, cedar, redwood, and composite decks cleaned safely and prepped for staining.
Wood & Cedar Fences
Cedar and wood fencing cleaned at low pressure to remove gray, moss, and grime without fiber damage.
Docks & Boat Ramps
Wooden docks and boat ramps cleaned of algae and slick biological growth for safer footing.
Pergolas & Arbors
Overhead wood structures cleaned to remove debris, moss, and weathering.
Stairs & Railings
Wooden stairs and railings cleaned for both appearance and grip safety.
Log Siding & Retaining Walls
Log siding, log cabins, and wood retaining walls restored without raising the grain.
Why Homeowners Trust Us with Their Wood
Calibrated Low Pressure
Pressure set specifically for wood — never the DIY over-pressure that raises grain and splinters boards.
Right Chemistry for Wood
Solutions that lift tannin stains, moss, and gray without harming the fibers.
Perfect Staining Prep
We open the grain and remove contaminants so stain and sealant absorb evenly.
Cedar Specialists
Cedar is the most common fence material here — we clean it constantly and know exactly how to treat it.
Staining Contractor Referrals
We work alongside deck staining pros or hand off a clean, ready surface for your own project.
Licensed & Insured
Fully insured professionals with 6+ years of Pacific Northwest experience.
Wood Washing Pricing
Wood wash pricing depends on the total surface area, wood type and condition, and whether a pre-treatment soak is needed for heavy moss or mildew. Every quote is transparent and itemized.
Area & Surfaces
Deck size, fence linear footage, and additional wood surfaces determine scope. We measure for an accurate quote.
Condition & Pre-Treatment
Heavy moss, mildew, or deep graying may need a pre-treatment soak, accounted for upfront rather than as a surprise.
Wash-Only vs. Staining Prep
Prepping for stain adds a step but sets up a far better, longer-lasting finish. We'll advise what your wood needs.
The fastest way to an accurate price is a free quote. We respond within 24 hours — often same day.
Frequently Asked Questions
Will power washing damage my deck or wood fence?
When done correctly by professionals, wood washing is completely safe. We use carefully calibrated pressure settings and appropriate nozzles for each wood type. Over-pressuring wood — a common DIY mistake — raises grain, splinters surfaces, and causes lasting damage. Our technicians are trained specifically to clean wood safely.
How often should I wash my deck in the Seattle area?
We recommend washing wood decks every 1–2 years in the Pacific Northwest. After washing, staining or sealing your deck significantly extends the interval and dramatically improves appearance and longevity. If your deck isn't sealed or stained, annual washing keeps it in the best possible condition.
Can you prepare my deck for staining?
Yes — our wood wash service is the ideal preparation step before staining or sealing. We remove all surface contaminants, open up the wood grain, and ensure the surface is perfectly prepared to accept stain or sealant evenly. We recommend staining within 48–72 hours of washing for best results.
Do you wash cedar fences?
Yes — cedar is one of the most common fence materials in the Seattle area and we clean it regularly. We use low pressure and appropriate technique to clean cedar without raising the grain or causing fiber damage.
Have a question we didn't answer? Call (425) 298-7041or submit a quote request — we respond within 24 hours.
Deck & Fence Cleaning Across Seattle & the Eastside
How fast a deck greys out depends almost entirely on what is growing over it. A Woodinville or Issaquah deck under heavy tree cover holds moisture most of the year and can need restoring on half the cycle of an open, south-facing deck in Renton or Kenmore. Age of the housing stock matters as much: older Seattle, Snohomish and Bothell decks are usually cedar or pressure-treated fir that has been coated and recoated for years, while newer Sammamish and Mill Creek builds are often composite that should never see a wand.
Choose your city for what we typically find on decks there and how we approach it.
Don't see your city? We work across the greater Seattle area, roughly an hour out from Kenmore. See the full service area, or call (425) 298-7041 and we'll tell you straight away whether you're in range.
Related Services
Wood washing pairs naturally with these outdoor and hardscape services:
Bring Your Deck & Fence Back to Life
Get a free, no-obligation wood power wash quote for your Seattle or Eastside home. We serve Bellevue, Kirkland, Redmond, Sammamish, Bothell, and surrounding areas.
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