Professional Deck & Fence Staining in Western Washington
A deck in Western Washington is the hardest-working exterior surface on your property. It's horizontal, so it holds water instead of shedding it. It gets walked on. It has no roof over it. And it spends eight months a year damp at temperatures that mildew and algae find ideal.
That's why decks need attention every two to four years while your siding goes eight to ten. It isn't a sign anything went wrong — it's the job description.
The most consequential decision isn't the color. It's whether the product penetrates the wood or forms a film on top of it. In this climate, film-forming products trap moisture inside the board, and trapped moisture is what turns a deck gray, cupped, and soft. Everything below follows from that one distinction.
Penetrating Stain Versus Film-Forming Finish
Deck stains fall into two categories and they behave in opposite ways over time.
Penetrating stains soak into the wood fibers and leave little or no surface film. Moisture inside the board can still escape as vapor. When they wear, they wear thin and even — so recoating means cleaning and applying, with no stripping required.
Film-forming finishes — solid stains, deck paints, and most clear sealers — build a layer on top of the wood. They look excellent for the first season. Then water finds a way in through a crack or an end grain, gets under the film, and can't get out. The film blisters and peels, and now you're stripping or sanding the entire deck before you can do anything else.
For horizontal surfaces in this climate we use penetrating semi-transparent stains almost exclusively. Armstrong Clark and Defy are our regular choices — both allow vapor transmission while protecting against UV and mildew, which is the combination this region demands. Solid stains have a legitimate place on vertical surfaces like fence boards and railings, where water doesn't sit, and on decks already coated with a solid that can't be practically stripped.
Decking Materials in the Pacific Northwest
What your deck is built from changes the prep, the product, and the schedule.
- Pressure-treated fir and hemlock — the most common decking in this region by a wide margin. New PT lumber must weather three to six months before it will accept stain; staining it too early is the single most common deck mistake we see. Once weathered, it takes penetrating stain well and needs recoating every two to three years.
- Cedar — beautiful, soft, and thirsty. Cedar decking absorbs a lot of product and its tannins react with iron fasteners to produce black staining. It needs gentle cleaning; aggressive pressure washing furs the surface irreversibly.
- Redwood — less common here but excellent. Similar handling to cedar, with the same tannin considerations.
- Ipe and tropical hardwoods — dense and oily, which means most standard stains won't penetrate. These need a hardwood-specific oil and more frequent maintenance, typically annually.
- Composite decking — Trex and similar. Not stained. It can be cleaned and brightened, and we'll do that, but if a composite deck has faded there is no coating that fixes it permanently.
Our Deck Staining Process, Step by Step
Prep is the entire job. A deck stained over a dirty or damp surface will look excellent for one season and fail in the second.
- 01
Assessment and Written Estimate
30–45 minutes, freeWe measure the deck, identify the wood species, check moisture content, test the existing finish to see whether it's penetrating or film-forming, and inspect boards, railings, and structure for rot and loose fasteners. We tell you honestly whether it needs a stain, a restoration, or in some cases board replacement before anything else is worth doing.
- 02
Cleaning and Stripping
1 dayGentle pressure washing — well below what we'd use on siding — combined with a deck cleaner for mildew, algae, and gray oxidized surface fiber. High pressure on softwood decking furs the grain permanently, and once it's furred it will never take stain evenly again. If a failing film-forming product is present, it gets chemically stripped. Stain over old peeling stain peels with it.
- 03
Brightening and Neutralizing
Same dayDeck cleaners are alkaline and they leave the wood chemically out of balance, which affects both stain absorption and color. A brightener neutralizes the pH and restores the wood's natural tone — this is why professionally prepped decks look noticeably warmer and more even before a drop of stain goes on. Most DIY jobs skip it entirely.
- 04
Drying
24–72 hoursWe check moisture content with a meter rather than guessing. Wood needs to be below roughly 15% for penetrating stain to actually penetrate. In April or October in this region, that can mean three days rather than one. This is the step most likely to move a schedule, and it isn't negotiable — stain applied to damp wood sits on the surface and peels.
- 05
Sanding and Repairs
Half a day to a dayAny raised grain or rough areas sanded smooth. Popped nails set or replaced with screws. Splintered board edges eased. Rotted or badly split boards replaced — quoted separately, since we can't see the underside of every board from above. Railings, balusters, and stair treads get individual attention because that's what people actually touch.
- 06
Stain Application
1–2 daysPenetrating stain applied to saturation — brushed, rolled, or sprayed and back-brushed depending on the surface. Back-brushing is what works the product into the grain rather than leaving it sitting on top, and it's the difference between three years and eighteen months. We stain to a natural stopping point on each board run so there are no lap marks mid-deck. Railings, balusters, fascia, and stair risers included as part of the deck, not as an add-on.
- 07
Cure and Walkthrough
24–48 hours before useStain is dry to the touch quickly but needs a full day or two before furniture and traffic return. We walk it with you, leave labeled touch-up product, and give you a realistic recoat window for your specific deck and exposure so you're not guessing in two years.
Deck and Fence Staining Costs in Western Washington (2026)
Deck work is priced by square footage plus railing linear footage, and railings take disproportionately longer than deck surface — a deck with elaborate balusters can cost more than a larger deck without them.
| Project Scope | Typical Range | Notes |
|---|---|---|
| Small deck, up to 200 sq ft | $600 – $1,100 | Clean, brighten, and stain |
| Average deck, 200–400 sq ft | $1,100 – $2,000 | The most common project |
| Large deck, 400–800 sq ft | $2,000 – $3,500 | Multi-level adds stair and transition work |
| Deck restoration with stripping | Add $400 – $1,500 | Removing a failing film-forming product |
| Fence staining | $3 – $7 per linear foot | Both sides; height affects the rate |
| Pergola or trellis | $400 – $1,200 | Access and detail drive the number |
What Moves the Number
- Existing finish. A previously unfinished or penetrating-stained deck needs cleaning. A peeling solid stain needs stripping, and that can double the prep cost.
- Railing complexity. Balusters are slow. A deck with 60 turned balusters takes substantially longer than the same deck with a cable or glass rail.
- Wood condition. Heavy graying, mildew, and furred grain all add prep time. Rotted boards get quoted separately.
- Multi-level and stairs. Every stair tread, riser, and stringer is hand-worked. Multi-level decks price above their square footage.
- Wood species. Tropical hardwoods need specialty oil and more product. Cedar absorbs more than pressure-treated fir.
- Access. Second-story decks and steep-grade sites need staging.
What We Put on Your Deck
Product selection is driven by surface orientation and wood species. Horizontal and vertical surfaces have genuinely different requirements.
| Application | Product | Why |
|---|---|---|
| Deck surfaces and stair treads | Penetrating semi-transparent stain | Lets the board release moisture; wears thin and even instead of peeling |
| Fences, railings, vertical surfaces | Semi-transparent or solid stain | Water does not sit on vertical surfaces, so film-forming products are viable here |
| Cedar and redwood | Penetrating oil-based stain | Feeds the wood and manages tannin movement better than waterborne on these species |
| Weathered pressure-treated lumber | Penetrating stain, oil or hybrid | PT decking is the regional default and takes penetrating product well once weathered |
| Ipe and tropical hardwood | Hardwood-specific penetrating oil | Standard stains cannot penetrate dense oily species; expect annual maintenance |
| All prep | Deck cleaner plus wood brightener | Cleaner strips gray and mildew; brightener restores pH so stain absorbs evenly |
Armstrong Clark and Defy are our regular semi-transparent choices for this climate. Both are formulated for vapor transmission with UV and mildew protection, which is the specific combination Western Washington demands.
Deck Staining & Sealing Services We Offer
What's Included in Every Deck Estimate
- Free on-site assessment with moisture and finish testing
- Itemized written estimate including railings and stairs
- Color consultation with samples on your actual decking
- Low-pressure cleaning and mildew treatment
- Wood brightening and pH neutralization
- Nail and screw setting, and light sanding of raised grain
- Full-saturation stain application with back-brushing
- Railings, balusters, stair treads, risers, and fascia
- Plant and siding protection, and full cleanup
- Labeled touch-up stain and a realistic recoat schedule
Quoted Separately
- — Board replacement and structural repair
- — Chemical stripping of failing film-forming finishes
- — Deck framing, joist, or ledger repair
- — Composite deck cleaning — available, but it is not a staining service
- — Under-deck drainage and waterproofing systems
- — Staging for elevated or steep-access decks
How Long Deck Staining Takes
| Project Scope | Typical Duration |
|---|---|
| Small deck, up to 200 sq ft | 2–3 days including dry time |
| Average deck, 200–400 sq ft | 3–4 days |
| Large or multi-level deck | 4–6 days |
| With stripping and restoration | Add 1–2 days |
| Fence only | 1–3 days depending on run length |
Most of that elapsed time is drying, not labor. We will not stain wood above roughly 15% moisture content, and in shoulder season that can mean waiting three days rather than one. May through September is the reliable window here — and a deck stained in June has months of dry weather to fully cure before the rain returns, which is worth more than most people realize.
What's Included
Deck and Fence Staining Across Snohomish and King County
Deck conditions vary more by exposure than by city, but there are real regional patterns:
Pressure-treated decks off the back of 1980s–90s split-levels, most of them partially shaded and carrying heavy mildew on the north side. Cleaning and brightening does most of the visible work here.
Sound-facing decks with full exposure to wind-driven rain and salt. These are the shortest recoat cycles we see — closer to two years than four.
Elevated decks on hillside lots with view exposure. Full sun plus wind means UV degradation is the failure mode, not mildew.
Large multi-level cedar decks on wooded lots. Heavy shade, constant organic debris, and cedar's softness mean gentle prep matters more here than anywhere.
Big decks on larger lots, frequently with extensive railings and pergolas attached. Railing linear footage often exceeds deck square footage on these.
Hillside and greenbelt-adjacent decks with dense tree cover. Persistent shade plus falling debris makes mildew the dominant problem.
We serve 24 cities across Snohomish, King, and Pierce County. Find your city for local detail.
Why Choose Paint Gunners for Deck Staining & Sealing?
We use professional airless and HVLP spray equipment for factory-smooth finishes that no brush or roller can match.
We spend the majority of our hours on prep — cleaning, repairing, priming, and protecting — because that is what determines how long the finish lasts.
Commercial-grade coatings selected per surface and per exposure — not whatever was cheapest at the counter.
We don't leave until you're happy. Full walkthrough inspection with touch-ups included on every project.