What matters most
- A standard Bellingham deck runs $770 to $2,000 to stain, starting at $3.85 per square foot, over 2 to 4 days.
- Benjamin Moore requires wood under 15 percent moisture for Arborcoat and TWP asks for 12 to 15 percent, checked with a meter.
- Arborcoat needs 40 degrees F air and surface, TWP 1500 needs 50 degrees F, and cleaning has to be followed by 48 hours of drying.
- Semi-transparent stain wears away on horizontal boards while solid stain peels and then has to be stripped, which costs more than the original job.
- Plan on recoating deck boards every 2 to 3 years in Bellingham and railings every 4 to 5.
What deck staining costs in Bellingham
Staining a standard deck in Bellingham runs $770 to $2,000. The starting rate is $3.85 per square foot of deck surface, and most jobs take 2 to 4 days start to finish.
Most of those days go to cleaning and then waiting for the boards to dry.
A 200 square foot deck off the back of a Barkley rambler, boards sound, last stained three years ago, lands near the bottom of that band. A 450 square foot wraparound in Sudden Valley with 40 feet of railing, two sets of stairs, a lattice skirt, and four seasons of moss lands at the top or slightly past it. Railings get quoted by the linear foot and priced by the piece in real life.
What moves the number:
- Railing and baluster count. A 2x2 baluster has four faces and eats about as much labor as a square foot of decking. Forty of them is most of a day.
- Whether the old finish has to come off. Cleaning is one price. Stripping a failed film forming stain is a different job with a different number.
- Board condition. Furry, raised grain from years of weathering has to be sanded before it will take stain evenly.
- Stairs and skirting. Risers, stringers, and lattice are all surface area that never shows up in the deck footprint you measured.
Measure your own deck before you call anyone. Length times width, plus roughly one square foot for every linear foot of railing, gets you close enough to sanity check a bid. Current scope and timeline sit on the deck staining page.
Deck staining price bands in Bellingham, WA
| Scope | What it covers | Bellingham range |
|---|---|---|
| Starting rate | Per square foot of deck surface, sound boards, clean and stain | $3.85 / sq ft |
| Typical standard deck | Clean, brighten, sand as needed, then stain boards, railings, and stairs | $770 to $2,000 |
| Cleaning only, no stain | Low pressure wash of deck and house to pull off algae, moss, and mildew | $385 to $825 |
| Deck plus a full exterior repaint | Both scheduled into one dry stretch with a single site setup | $4,200 to $9,350 plus $770 to $2,000 |
| Commercial or multi-unit decking | Apartment walkways, landings, and railings priced by area | $2.20 to $6.60 / sq ft |
Railing footage and whether the old finish has to be stripped move the price more than deck square footage does.
What a Bellingham winter does to a horizontal deck
A wall sheds water. A deck holds it.
Bellingham takes about 36 inches of precipitation a year and most of it lands between October and March. November averages 5.4 inches, December 4.9, January 4.8. Through that stretch, deck boards stay damp almost continuously, and the ones under a fir canopy in Silver Beach or along the shaded north side of a house in Columbia never dry out at all.
That does four things to wood.
- Algae and moss take root. Green film first, then black spotting, then real moss in the gaps between boards and along the north facing rail cap. The moss itself is not the damage. Holding water against the wood is the damage.
- The grain lifts. Wet, dry, wet, dry through the year raises the softer spring wood and leaves the board surface fuzzy. Stain over raised grain wears off the high spots first and looks blotchy by year two.
- End grain wicks. Cut ends, joist tops, and the underside of each board at the fasteners take on water far faster than the face does. That is where rot starts on a Bellingham deck, out of sight.
- UV grays the top face. Even at this latitude, July and August put enough ultraviolet on a horizontal surface to break down the lignin in the top layer of wood.
The practical result is that a deck here needs recoating more often than the same deck in Spokane or Yakima. Horizontal surfaces in this climate are a harder assignment than siding, and every stain manufacturer says so in the fine print.
Decks over saltwater in Edgemoor and Fairhaven carry a salt film on top of all of that, so the cleaning step on a bay side deck is doing more work than it looks like it is doing.
What separates a $770 deck from a $2,000 one
Deck bids are easier to compare than house bids, because there are only about five real variables. Ask about each one by name.
- Cleaning versus stripping. A cleaner and a brightener on a deck that still has a penetrating stain in it is a couple of hours. Removing a failed solid or film forming stain means a stripper and a neutralizing rinse, usually with sanding on top, and that alone can double the price.
- Sanding. Ask whether the boards get sanded, at what grit, and whether the rail caps get sanded too. Raised grain that never gets knocked down shows up as an uneven wear pattern inside a year.
- Coats. Penetrating oils like TWP 1500 go on wet on wet, which is closer to a coat and a half than to two coats. Arborcoat semi-transparent is a different system with a different sequence. Have the number written down either way.
- Coverage on rails and stairs. The most common quiet shortcut is staining the deck boards and rail caps and stopping, which leaves the baluster faces you actually see from the yard.
- Board and fastener repair. Popped screws, split boards, a loose rail post, and a soft stair tread all need a price before the crew shows up.
Then check the drying gap in the schedule. A bid with the crew washing Monday morning and staining Monday afternoon is either careless or dishonest. TWP calls for 48 hours of drying after cleaning, plus another two days if it rains in between.
Ask what the stain is by name. Benjamin Moore Arborcoat, TWP 1500, and Cabot are the products specified on these jobs, and they behave differently enough that a product name is a real answer and quality stain is not.
Stain types and what each one is actually for
Four categories, and picking the wrong one is the most expensive mistake on this page.
- Clear and toner. Almost no pigment, so almost no UV protection. On a sun exposed Bellingham deck a clear finish is a one season product.
- Semi-transparent. Enough pigment to block UV, still shows the grain, and it wears away instead of peeling. Benjamin Moore Arborcoat semi-transparent and TWP 1500 both sit here. This is the default for cedar decks in this climate because it fails gracefully, and gracefully is what you want on a surface you have to redo.
- Semi-solid. More pigment and more hiding, still penetrating. A good answer when the boards are weathered and mismatched but structurally fine.
- Solid. A film that sits on top of the wood. It hides everything and lasts a long time on railings and vertical faces. On horizontal deck boards in a climate this wet it eventually peels, and once it peels it has to be stripped rather than recoated.
Off the technical data sheets: Arborcoat semi-transparent covers 200 to 400 square feet per gallon, needs air and surface temperature at 40 degrees F or above, is dry to touch in about half an hour at 77 degrees F, and wants a full 24 hours before foot traffic. TWP 1500 wants 50 degrees F and no rain in the forecast for a few days.
A sensible and common split is a solid or semi-solid on railings and skirting where a film survives, with a semi-transparent on the deck boards where it does not. Keep both products in the same line so the colors relate to each other.
Cabot fills out the specification list here for deck and fence work.
Moisture content, mill glaze, and picking the week
Two numbers decide whether deck stain sticks.
The first is wood moisture content. Benjamin Moore requires the substrate under Arborcoat to be below 15 percent. TWP asks for 12 to 15 percent, checked with a moisture meter rather than a thumb. Stain applied over wood wetter than that sits on the surface, dries slowly or never, and lifts the first time somebody crosses it in wet shoes.
In Bellingham that rules out most of the calendar. From late October into April, an uncovered deck is rarely under 15 percent for more than a day or two at a time.
The second number is temperature, and dew comes with it. Arborcoat needs air and surface at 40 degrees F or above. TWP wants 50 degrees F. A deck is a horizontal surface facing an open sky, so it radiates heat overnight and collects dew earlier and heavier than the walls of the same house. Late September mornings here put water on deck boards long after the forecast said the rain had stopped.
Then there is mill glaze. Smooth planed lumber leaves the mill with the surface cells crushed and burnished, and stain will not penetrate through that. Benjamin Moore's instruction is to sand thoroughly or treat the wood with a brightener to break the glaze, then confirm it worked.
The field test takes ten seconds. Put a few drops of water on the board. If they bead up instead of soaking in within a minute, the wood is not ready for stain.
Run that test on your own deck before you call anybody. It tells you which conversation you are about to have.
How the 2 to 4 days run
Day one, clean. Furniture and planters come off, plants around the deck get covered and pre-wetted, then a deck cleaner goes on, gets worked in, and rinses at low pressure. Wood starts taking damage above roughly 800 psi, and a narrow fan tip held too close will carve the soft spring wood right out of a fir board and leave permanent striping that no stain hides. Where the old finish has failed, a stripper replaces the cleaner, followed by a neutralizing brightener to bring the wood pH back down.
Day two, dry and sand. The deck sits a minimum of 48 hours in dry weather. Then boards get sanded wherever grain has raised, rail caps get sanded because that is what hands touch, and the dust gets blown out of the gaps between boards.
Day three, stain. Balusters and railings first, then stairs, then deck boards, working toward the exit so nobody is standing on wet stain. Penetrating stains go on wet on wet where the wood is absorbent, and anything that has not soaked in within a few minutes gets wiped back off. Stain left to puddle turns into a sticky film that never fully cures.
Day four, cure and check. Furniture stays off 24 hours at minimum and longer if the weather is cool and damp. Planters go back last, sitting on feet rather than flat on the boards.
The one check worth asking about: a meter reading on the boards immediately before the stain goes on.
Why deck finishes fail here
Peeling inside a year. Almost always a film forming solid stain on horizontal boards, or any stain applied over wood that was above 15 percent moisture. The repair is stripping rather than recoating, and stripping a 300 square foot deck costs more than the original stain job did.
Blotchy color on new boards. Mill glaze that was never sanded or brightened. The stain took where the surface was open and sat on top where it was burnished. There is no touch up for this. It gets sanded and redone.
Black spots back within six months. Mildew that got washed off but never killed. The Western Red Cedar Lumber Association's guidance is to clean it with a bleach solution, oxygen bleach preferred, then finish with a coating that carries an effective mildewcide.
Black streaks around every screw. Plain steel fasteners reacting with the tannins in cedar. Hot dipped galvanized, aluminum, or stainless steel avoid it. Once the streaking is there, the fastener has to come out before the stain will look right.
Fuzzy grain a season after staining. Boards that were never sanded, so the stain coated raised fibers that then wore off and took the finish with them.
Rot at the joist tops. Water sitting in the gap between the deck board and the joist below it. No stain fixes that, and by the time a board feels soft underfoot the framing has usually been wet for years. Worth checking with a screwdriver tip on any Bellingham deck past 15 years old, especially at the ledger where it meets the house.
The 1 year workmanship warranty covers application. It does not cover framing that was already wet when the crew arrived.
Doing your own deck
Deck staining is the most reasonable do it yourself job on a house exterior. You work at ground level, the material is forgiving, and a mistake costs a weekend instead of a wall.
What people get wrong, roughly in order:
- Staining too soon after washing. The deck looks dry by dinner. It is not. Give it 48 hours and confirm with a moisture meter, which costs about what a gallon of stain does.
- Renting a pressure washer and using the wrong tip. A 0 degree or 15 degree tip in inexperienced hands etches fir and cedar permanently. Use a wide fan, hold it well back, and let the cleaner do the work instead of the pressure.
- Over applying. More stain does not mean more protection with a penetrating product. Excess that cannot soak in has to come back off with a rag inside a few minutes or it stays tacky for weeks.
- Starting on the wrong weekend. Watch the ten day forecast rather than tomorrow. You need a dry stretch long enough to cover cleaning, drying, staining, and curing.
Where to call somebody instead: a deck with a failed solid stain that needs stripping, a second story deck, more than about 60 feet of railing, or a deck with a couple of boards that feel soft underfoot. Stripping chemicals and elevated work are where the do it yourself math stops paying.
If you already have an exterior repaint booked, adding the deck to that same visit usually beats paying for a separate trip and a separate setup.
How often you redo it and what to do between
On a Bellingham deck, plan on recoating the horizontal boards every 2 to 3 years with a semi-transparent penetrating stain. Railings and vertical faces stretch further, often 4 to 5 years, because they shed water instead of holding it. Treat those as planning numbers rather than a promise. Some manufacturers put their own maintenance interval closer to every year or two, so the data sheet for whatever product goes on your deck is the number that governs. A deck under a solid cover or a deep overhang beats both of those numbers.
Between coats, four habits do most of the work.
- Sweep the gaps out every fall. Fir needles and maple leaves packed into the gap between boards hold water against end grain all winter, and end grain is where rot begins.
- Wash the green film off each spring. A stiff brush, a bucket of deck cleaner, and a garden hose. Doing this every year is what turns a 2 year recoat cycle into a 3 year one.
- Lift the planters. Anything sitting flat on the boards holds a permanent wet spot under it. Pot feet cost a few dollars and save a board.
- Cut back what shades it. A branch removed in March does more for your deck finish than anything you can buy in a can.
Recoating on schedule is far cheaper than restoring. A deck stained every three years stays inside the $770 to $2,000 band each time it comes due. A deck ignored for ten years needs stripping, sanding, board replacement, and sometimes framing repair before anyone can put stain on it, and that is a carpentry bill sitting in front of a painting bill.
If the house is due for a repaint anyway, a single wash of the deck and the siding puts both onto the same maintenance calendar, which is easier to remember and cheaper to schedule.
Check these before you sign a deck staining bid in Bellingham
- Stain named on the contract by product and line, such as Arborcoat semi-transparent or TWP 1500.
- Cleaning and stripping priced separately so you know which one you are buying.
- At least 48 hours of drying built into the schedule between washing and staining.
- A moisture meter reading taken on the boards before stain goes on.
- Sanding called out for deck boards and rail caps, with a grit stated.
- Baluster faces, stair risers, and stringers explicitly included in the coverage.
- Board and fastener repair priced by the piece before work starts.
- Water drop test done on any new or smooth planed boards to confirm mill glaze is broken.
- Start date that falls inside the late June to September dry window.
- Fasteners confirmed as hot dipped galvanized, aluminum, or stainless if boards are being replaced.
- Warranty term in writing, which here is 1 year on workmanship.
Questions we get asked
What moisture content does my deck need before staining?
Below 15 percent for Benjamin Moore Arborcoat, and 12 to 15 percent for TWP 1500. That is measured with a moisture meter pushed into a board, not judged by how the surface looks. A deck can feel dry on top and still read 20 percent an eighth of an inch down. Stain over wet wood sits on the surface and lifts within weeks.
Semi-transparent or solid stain on a Bellingham deck?
Semi-transparent on the horizontal boards. It carries enough pigment to block UV and it wears away thin instead of peeling, so the next recoat is a cleaning job rather than a stripping job. Solid stain works well on railings, skirting, and any vertical face. Putting solid on deck boards in a climate this wet buys you a stripping bill in four or five years.
Do you have to strip the old stain or can you go over it?
If the existing finish is a penetrating stain that has worn thin, a cleaner and a brightener is enough and the new coat goes right over it. If the old finish is peeling, flaking, or a solid film, it has to come off with a stripper and a neutralizing rinse. You can tell by scraping a fingernail across it. Material that flakes rather than fades has to be removed.
My deck is green with moss. Does that all come off?
Yes, and the green is the easy part. A deck cleaner with a mildewcide kills the growth and low pressure rinsing takes it away. What matters is killing it rather than only removing what you can see, because moss that gets rinsed off but not killed comes back the following spring. Moss in the gaps between boards also has to be dug out, since that is what holds water against end grain.
Can the railings be a different color from the deck boards?
Yes, and it is often the better build. A solid or semi-solid stain on railings, posts, and skirting holds up because those surfaces shed water, while a semi-transparent on the deck boards wears gracefully instead of peeling. Keep both products inside the same manufacturer line so the colors are designed to sit next to each other.
What is mill glaze and why does it matter on new boards?
Planing at the mill crushes and burnishes the surface cells of the wood, leaving a hard skin that stain cannot penetrate. Benjamin Moore's instruction is to sand thoroughly or treat with a brightener to break it. Test it by dropping water on the board. If the drops bead instead of soaking in within a minute, the surface is still glazed and stain will go on blotchy.
Do you stain the underside of the deck boards?
Not on an existing deck, because the boards are already fastened down and the underside is unreachable without pulling every one. On new construction, coating all four faces of a board before installation is worth doing and it slows down cupping. For an existing deck, the useful equivalent is keeping the gaps between boards clear so water drains instead of sitting there.
How long before furniture and foot traffic go back on?
Benjamin Moore calls for 24 hours before foot traffic on Arborcoat, and that assumes 77 degrees F and 50 percent humidity. On a 62 degree Bellingham morning with damp air, give it longer. Furniture, planters, and grill legs should wait an extra day past the point where the surface feels dry, because weight on a finish that has not fully cured leaves marks.
Does pressure treated decking need anything different?
It needs to be dry, which takes longer than people expect. Most treated lumber sold in this region is incised hem-fir, and it comes off the rack wet from the treatment process. New treated boards often need several weeks of dry weather before they read under 15 percent. The water drop test works the same on treated wood as it does on cedar.
Are there rules about where the wash water goes?
Yes. Bellingham Municipal Code chapter 15.42 prohibits discharging anything other than rain into the storm drain, and that includes pressure wash water. Wash water needs to go to the sanitary sewer or soak into a planted area without running off. That matters more if your deck drains toward a street inlet, and it matters a great deal on Lake Whatcom properties.
Should I stain my deck or paint it?
Stain it. Paint is a film sitting on top of the wood, and on a horizontal surface that takes standing water, foot traffic, and freeze cycles, that film eventually loses adhesion and peels. Once deck paint peels the only path forward is stripping it. Stain penetrates, wears thin rather than lifting, and lets the next recoat be a wash and a coat.
Which stain lasts longest on horizontal boards here?
A pigmented penetrating stain, applied to properly cleaned and sanded wood inside the dry window, gets 2 to 3 years on Bellingham deck boards. Arborcoat semi-transparent, TWP 1500, and Cabot all land in that same range when the prep is right. Prep drives lifespan harder than brand does, and a poorly prepped premium stain loses to a well prepped ordinary one every time.
Deck staining in Bellingham, WA
Prices, moisture limits, and the dry window that sets your schedule