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Deck Cleaning for Composite Decking in Your Area

Low-pressure wash for composite decking. Deck washing that removes gray weathering, mildew and slippery growth from wood and composite decks without furring the boards. Typical cost $250-$600.

Grime, mildew and stains build up a little at a time until one day the outside of your property looks years older. Deck Cleaning for Composite Decking in your area brings it back, usually in a single visit. For composite decking, that means low-pressure wash.

The right method for the job

Low-pressure washCleaning method
Low pressure, often under 1,500 PSI with a wide fan tip, held well back; check your decking brand's care guidePressure

Cleaning solution: A composite deck cleaner recommended by the decking maker.

Cleaning composite decking safely

Composite decking doesn't need staining, but it does grow mold and mildew, especially in shade and between boards. Most manufacturers recommend gentle cleaning, and some limit the pressure that can be used without affecting the warranty.

Avoid: High pressure and narrow tips, which can scar the surface and may void the warranty.

How often: Every year, more often in shade.

Signs you need deck cleaning for composite decking

  • Gray, weathered boards
  • Green or black growth and slippery spots
  • Stain that is peeling or worn through
  • Dark spots under planters and furniture
  • Mildew between composite boards

What causes the dirt and stains

  • Sun breaking down the wood surface (it turns gray)
  • Shade, leaves and moisture feeding mildew
  • Old stain or sealer wearing unevenly
  • Pollen and dirt trapped in the gaps

Easy upkeep between cleanings

  • Clear the gaps between boards with a putty knife so water drains
  • Sweep often and keep leaves off the deck
  • Move planters and rugs now and then
  • Check for loose boards, nails and soft spots before anyone washes it

Not sure what you're looking at? The free stain identifier and safe pressure guide explain each stain and surface.

Why more pressure isn’t better

  • Furry, gouged wood and lap marks from too much pressure
  • Water and grime blasted onto the house siding
  • Using chlorine bleach on wood, which can damage fibers and fasteners
  • Washing composite decking in a way that voids its warranty

What happens on the day

  1. Inspect the boards, rails and finish
  2. Protect nearby siding and plants
  3. Apply a wood or composite cleaner and let it dwell
  4. Rinse at low pressure, following the grain
  5. Apply brightener on wood and let it dry before any stain

Typical deck cleaning for composite decking prices

$250-$600Typical range for a typical 200-400 sq ft deck
2-4 hoursTypical time on site
Once a yearRecommended frequency

What moves the price:

  • Size: square footage of siding, roof or flatwork
  • Condition: heavy growth, old stains and peeling finishes take longer
  • Access: number of stories, roof pitch, slopes and how close we can park
  • Add-ons: sealing, gutter brightening and other services done in the same trip

These are typical U.S. ranges, not a quote. You get an exact price before any work starts. For a quick estimate, try the pressure washing cost calculator.

Other services for composite decking

Deck Cleaning for Composite Decking in your area

We provide deck cleaning for composite decking across all 50 states, Washington, DC and Puerto Rico. Pick your state to see local details:

Deck Cleaning for Composite Decking: frequently asked questions

How much does deck cleaning for composite decking cost?

Deck Cleaning for Composite Decking typically costs $250-$600 for a typical 200-400 sq ft deck, and usually takes 2-4 hours. The exact price depends on the size and condition, and you get it before any work starts. Call (555) 010-0000 for a free quote.

Do you use high pressure for deck cleaning for composite decking?

For composite decking: low pressure, often under 1,500 PSI with a wide fan tip, held well back; check your decking brand's care guide. What we avoid: high pressure and narrow tips, which can scar the surface and may void the warranty. The cleaning solution does most of the work, followed by a gentle rinse.

Is deck cleaning for composite decking safe for my plants and pets?

We pre-wet plants and lawns, keep cleaning solutions diluted to what the surface needs, and rinse landscaping again when we finish. Keep pets and children inside until surfaces are rinsed and dry.

How often should I schedule deck cleaning for composite decking?

Every year, more often in shade. Shade, nearby trees, humidity and heavy traffic mean more frequent cleaning; sunny, dry spots can go longer. Our free cleaning frequency tool gives a recommendation for your climate.

What if it rains on the day?

Light rain doesn't stop most washing, but heavy rain, high wind, lightning and freezing temperatures do. If the weather isn't right, we reschedule at no charge. Our work is backed by a satisfaction guarantee.

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Ready for a cleaner home or business?

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