Deck & Patio Cleaning in Charleston, SC
At Spartan Soft Wash, LLC, we believe that your outdoor living space should be a place where you can relax and enjoy yourself. But if your deck, patio, or sidewalk is covered in dirt and grime, it might be hard to focus on enjoying the outdoors. That's why we offer deck and patio cleaning for commercial properties across Charleston.
We're a locally owned and operated company that specializes in pressure washing to keep your outdoor living spaces beautiful. Our team is committed to providing you with the best service possible, and we want you to feel confident knowing that we'll do whatever it takes to get your property looking great.
We'll make sure your exterior surfaces are free of dirt, mildew, moss, mold, and algae so that your deck or patio can be enjoyed by everyone at any time of the year. Our goal is 100% customer satisfaction, which means we'll stay until you're satisfied with our work. If you have any questions about deck or patio cleaning in Charleston, please feel free to reach out by calling 843-469-3090 or by completing our online form.
Wood & Composite Deck Washing To Best Care For Your Deck Investment
There's nothing better than taking time to enjoy your backyard, especially when you have a beautiful new wood or composite deck. But it can get dirty fast if you don't take care of it. And that's not just an eyesore; a dirty deck isn't safe to walk on. Before you know it, you could be looking at major repairs or even having to replace the entire thing!
Keeping your deck clean is the best way to protect it from the elements. Regular deck washing will help keep your wood deck looking great for years to come. At Spartan Soft Wash, LLC, we offer professional deck and patio cleaning services for both wood and composite decks. Our advanced cleaning process removes dirt, mildew, and grime from your deck with a low-pressure washing system that won't harm your deck or leave streaks. If you need experienced deck and patio cleaning services for your Charleston property, don't hesitate to reach out today! We can't wait to earn your business.
Patio Cleaning For Clean, Easy To Enjoy Outdoor Areas
Are your outdoor areas looking a little… a little shabby? We can help!
Our deck and patio cleaning is the perfect solution for outdoor areas that need some TLC.
Our pressure washing pros will get rid of stains and discolorations, leaving you with a clean, easy-to-enjoy patio or deck. And if you need driveway and sidewalk cleaning, we've got you covered there too! Our professional on-site services are perfect for busy people who don't have time to clean their patios or driveways. We'll provide an estimate based on your needs and send out our team of professionals as soon as possible. Get in touch for a no-obligation quote.
Wood decks and screened porches are soft washed, not pressure washed, so the wood is never furred. Read about our Charleston soft washing service.
How We Clean Decks Without Damaging Them
The fastest way to ruin a wood deck is a pressure washer on a narrow tip. It cuts into the grain, raises the fibers into a fuzzy gray surface called furring, and leaves wand marks that show for years. We do the opposite. Decks get a soft wash: a wood-safe cleaner applied at low pressure, time to break down the algae, mildew and gray weathered fibers, then a gentle rinse with a wide fan tip that moves the dirt without scarring the wood. It is slower than blasting, and it is why a deck we clean looks like new wood instead of chewed wood.
Composite gets the same treatment at even lower pressure, because high pressure can open the surface of the boards and let mold take hold underneath.
Wood Decks: Pressure-Treated, Cedar and IPE
Pressure-treated pine
The most common deck wood around Charleston, and the one that grays and greens fastest in our humidity. A soft wash removes the gray layer and the black mildew spots in the grain. If the boards are more than a few years old and have never been sealed, expect them to look dramatically lighter once clean.
Cedar and redwood
Softer woods that pressure destroys almost immediately. We keep the pressure down and let the cleaner do the work, which brings back the natural color without stripping the surface.
IPE and other hardwoods
IPE, cumaru and tigerwood are dense enough to shrug off pressure, but they still gray in the sun and grow a slick green film in the shade. The right cleaner lifts both. On the beach, salt spray also leaves a dull white haze on IPE that comes off with a proper wash. If you plan to re-oil the deck, clean it first so the oil penetrates evenly.
Composite and Trex Decks
Composite does not rot, but it does grow mold and mildew in the texture, and the shaded end of a Trex deck in Charleston turns green within a season or two. Manufacturers warn against high pressure because it can mar the cap layer. We clean composite at low pressure with a cleaner that lifts the growth out of the embossed grain, then rinse. Tannin stains from leaves and the black spots that come through from the core both respond well.
Pool Decks, Patios and Screened Porches
Concrete pool decks, paver patios, flagstone and stamped concrete are cleaned with a surface cleaner, which uses real pressure on a surface that can take it and leaves no stripes. Around a pool we also treat the slick algae that builds up at the waterline and on the shaded side of the coping, because that is where people slip. Screened porches are soft washed: screens, frames, ceiling and floor, without tearing the mesh.
Clean and Seal
If you are planning to stain or seal a deck, clean it first and let it dry for a few days. Stain applied over gray fibers and mildew peels within a year. A soft wash takes the surface back to clean, sound wood so the new coat bonds and lasts. Tell us when you book that a stain or sealer is going on, and we will plan the wash and timing around it.
How Much Does Deck Cleaning Cost in Charleston?
Deck and patio cleaning is priced by size:
- Under 200 sq ft: $100
- 200 to 400 sq ft: $150
- Larger decks and patios: $200
Those are the prices for a standard clean. Heavy algae, multiple levels or a pool deck that needs the coping treated may add a little, and the quote form will show you the exact number for your property. Most customers pair the deck with a house wash or driveway cleaning on the same visit. Get your exact deck cleaning price online in about a minute.
Deck cleaning by town
Isle of Palms · Mount Pleasant · Sullivan's Island · Charleston · James Island · Summerville
Last updated: October 2026
Compare every service in our Charleston pressure washing price guide.
Half a day. You don't need to be home.
We check the surfaces, note anything pre-existing with time-stamped photos, then wet and cover the landscaping.
The right mix and the right pressure for the surface. Soft wash on roofs and siding, surface cleaner on concrete.
Plants rinsed again, everything post-treated where it helps, and before and after photos sent to you.
Everything else we clean
Soft wash for siding, brick, stucco and trim. Mildew and green algae gone.
Removes the black streaks without lifting a shingle. Low pressure only.
Surface cleaning that brings concrete back to its original color.
Cleared, flushed and brightened so water goes where it should.
Storefronts, parking lots, dumpster pads and building exteriors. Scheduled around your hours.
Irrigation and battery stains lifted from concrete, stucco and vinyl.
Paint lifted from masonry and metal, usually within a day of your call.
Decks & Patios FAQs: Charleston, SC
Is it OK to pressure wash a wood deck?
Not with high pressure. A pressure washer on a narrow tip cuts into the grain, raises the fibers into a gray fuzz and leaves wand marks. The safe method is a soft wash: a wood-safe cleaner at low pressure, time to work, then a gentle rinse with a wide fan tip. That is how we clean every wood deck.
Can I use Dawn dish soap to clean my deck?
Dish soap will lift some surface dirt but does nothing to the algae, mildew and gray weathered fibers that make a deck look old, and it leaves a film that attracts dirt. A dedicated deck cleaner, usually a sodium percarbonate or a diluted sodium hypochlorite mix depending on the wood, kills the growth and brightens the wood.
What is the best cleaner for a pressure-treated deck?
For green and black growth, a diluted sodium hypochlorite solution with a surfactant kills the algae and mildew. For gray, weathered wood that is going to be stained, an oxygen-based cleaner followed by a wood brightener gives the most even result. We choose based on the condition of the wood and what is happening to the deck next.
How much does it cost to clean a deck?
In Charleston, our deck and patio cleaning runs $100 for decks under 200 square feet, $150 for 200 to 400 square feet and $200 for larger decks. Enter your address and a few details in our instant quote form to see the exact price for your property.
How often should a deck be cleaned in Charleston?
Once a year for most decks, and every spring for shaded decks, decks under live oaks or pines, and decks near the marsh or beach. Cleaning yearly keeps mildew from working into the grain, which is what causes the gray, soft surface on older decks.
Should I clean my deck before staining or sealing it?
Yes, always. Stain or sealer applied over gray fibers and mildew peels within a year. Clean first, let the wood dry for two or three days of good weather, then stain. Tell us when you book that a stain is going on so we can plan the wash around it.
Get your decks & patios priced today.
Enter your address and a few details about the home, see your quote instantly, and book a day on the spot. No sales visit, no waiting on a callback.