A gray deck usually isn’t a dead deck. Under that weathered surface — UV-oxidized wood fibers plus a season of mildew — the original color is still there, and the difference after a proper low-pressure clean and brighten makes people rethink the replacement quote.
Gray Isn’t Dead — What Cleaning Restores (and What It Can’t)
Sun breaks down the surface layer of wood into gray, loose fibers; Greenville’s humidity layers mildew on top. A wood-safe detergent clean strips both, and an oxalic-acid brightener afterward reopens the grain and brings back the warm tone — it’s the step most DIY jobs skip and the reason ours don’t look chalky. What cleaning can’t fix: deep UV checking, cupped boards, popped fasteners, and rot. We’ll point those out honestly; sometimes the right call is our cleaning plus a handyman’s board swap, not a new deck.
Wood vs. Composite: Two Different Jobs
Softwood decks (pressure-treated pine, cedar): the danger is fuzzing — too much pressure tears the surface into splinters that never lie back down. We stay under wood-safe pressures with wide fan tips and let percarbonate cleaner do the lifting. Composite decks (Trex and cousins): the danger is gouging and heat-marking, which are permanent in a surface that can’t be sanded. Composite gets its own cleaner and even gentler handling — and it does grow the same algae film wood does, especially on shaded steps where it gets slick enough to be a genuine safety issue.
Staining Soon? Start Here
Stain over dirt or mildew and it peels within a year — ask anyone who’s done it. Our clean-and-brighten is exactly the prep stain manufacturers call for: growth killed, gray fibers stripped, grain opened so the stain absorbs evenly. Then the important part — 48 hours of dry weather before anything goes on. Clean in the morning, stain the same afternoon, and you’ve wasted both jobs.
Fences: The Green-Side Problem
Greenville privacy fences are mostly pine, and nearly every one has a “green side” — the shaded face that never dries after rain. Add red-clay splash along the bottom rail from summer storms and a fence can look far older than it is. Both come off with the same wood-safe process we use on decks, and a cleaned fence is also the required first step if you’re planning to stain or seal it. For long runs we price by the linear foot, which makes fence cleaning cheaper than most people guess.
How a Deck or Fence Job Runs
- 1. Test a hidden board first. Species, age and whatever finish is left all change the approach. We prove settings somewhere nobody looks before touching the rest.
- 2. Protect below and around. Beds, lawn and anything under a raised deck get soaked and covered — runoff goes somewhere, and we would rather it be somewhere harmless.
- 3. Apply a wood-safe cleaner. Percarbonate-based, which lifts the gray and kills mildew without the fiber damage bleach causes on bare wood. It dwells while it works.
- 4. Rinse at controlled pressure, wide fan, with the grain. This is where deck jobs are won or lost. A stationary nozzle for two seconds leaves a mark you will see for years.
- 5. Neutralize and walk it with you. A final rinse brings pH back so future stain bonds, then we flag loose boards, popped nails and soft spots.
What Deck and Fence Work Costs
Most decks land between $200 and $450; residential fence runs usually $150 to $400. Rails, balusters and lattice are the real cost driver — detail work takes far longer per square foot than open decking. Full numbers on the pricing page.
Typical Upstate ranges shown as a guide only — not a quote. We confirm the price once we have seen the property.
Where We Stop
- We will not strip solid stain with pressure. That is a chemical stripping job; doing it with pressure destroys the wood surface.
- We do not sand or refinish. We clean and prep. Staining is another trade and we will say so.
- We do not repair structure. We flag soft boards, loose rails and rot. We do not fix them.
- We will not promise a gray deck comes back to new. Deeply weathered wood improves a lot and keeps some character.
Deck & Fence FAQs
What pressure is safe on a cedar or pine deck?
Very little — soft woods fuzz and splinter above roughly 500–600 PSI at close range. We clean wood with percarbonate detergents, wide fan tips, controlled distance, and patience. The detergent does the work; the water just rinses.
How soon after cleaning can a deck be stained?
Give it about 48 hours of dry weather so the wood moisture drops back down. Stain applied to damp wood peels — the most common DIY deck failure we see.
Will cleaning scratch composite decking?
Not the way we do it. Composite (Trex and similar) gets low pressure and a composite-safe cleaner — the surface is a plastic-wood blend that gouges permanently under a narrow high-pressure tip, so narrow tips never touch it.
Why does my fence only grow green on one side?
That is the shade side — usually north-facing or against your neighbor’s tree line. It never fully dries, so algae colonizes it first. It cleans up fully, and it will always be the first side to regrow.
How long after cleaning before I can stain?
Give it 48 hours of dry weather, longer if humid. Wood that looks dry can still hold moisture in the grain, and stain over that will not bond. A moisture meter is the reliable check.
Can you clean a deck with furniture and a grill on it?
Move what you can and we work around the rest. Anything left has to be shifted at least once, and we would rather you choose what moves than us.
Do you clean vinyl and aluminum fencing?
Yes — same soft wash approach used on siding. Vinyl fence panels in newer Simpsonville and Five Forks neighborhoods clean up very well.
My fence is shared with a neighbor. Do you do both sides?
Whichever side you are paying for, and we need access. If your neighbor wants theirs done at the same time it is cheaper for both — but that conversation is yours.
Will cleaning remove the green stamp marks on pressure-treated wood?
No. Those are mill marks in the wood itself. Cleaning lightens them; they do not come out.
Is it worth cleaning a deck I plan to replace?
Usually not, and we will tell you if that is the situation. If boards are soft or the framing is questionable, cleaning is money spent on something that is coming out.