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Loudoun Decks โ€” Northern Virginia deck builder
Loudoun Decks โ€” Northern Virginia deck builder

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Deck Pressure Washing in Northern Virginia

Remove mold, mildew & gray oxidation safe washing for wood & composite decks

Quick Answer:

Deck pressure washing: a written estimate for most decks. Removes mold, mildew, pollen, gray oxidation. Wood decks: 1,200-1,500 PSI max with fan tip. Composite: soft wash (low pressure + cleaner) recommended. Annual washing in Virginia's humid climate.

Professional pressure washing of a deck in Northern Virginia

Pressure Washing vs. Soft Washing What Your Deck Needs

Deck SizeWash OnlyWash + BrightenerWash + Stain Prep
Under 200 sqftNot publishedSee the written estimateIn that estimate
200โ€“300 sqftNot publishedSee the written estimateIn that estimate
300โ€“400 sqftNot publishedSee the written estimateIn that estimate
400โ€“500 sqftNot publishedSee the written estimateIn that estimate
500+ sqftNot publishedSee the written estimateIn that estimate

Wash + Brightener recommended before staining. Wash + Stain Prep includes sanding rough spots.

Wood vs Composite Different Washing Approaches

Wood Deck Washing

  • PSI: 1,200โ€“1,500 max (higher damages grain)
  • Tip: 40-degree fan (never zero-degree)
  • Direction: with the grain, 12โ€“18 inches from surface
  • Follow with wood brightener (oxalic acid)
  • Dry 48โ€“72 hours before staining
  • Frequency: annually (spring before stain)

Composite Deck Washing

  • Preferred: soft wash (low pressure + cleaner)
  • Max PSI if needed: 1,500 with 40-degree tip
  • Never use zero-degree or turbo nozzle
  • Use brand-recommended cleaner (Corte Clean, etc.)
  • No brightener needed (composite doesn't gray)
  • Frequency: 1โ€“2x yearly (pollen + mold removal)

What We Remove

  • Green mold/algae: Common on shaded sections Virginia humidity breeds it fast
  • Black mildew spots: From organic debris (leaves, pollen) sitting on the surface
  • Gray oxidation (wood only): UV damage turns wood silver/gray brightener restores natural color
  • Pollen buildup: Virginia spring pollen coats everything yellow film needs removal
  • Ground-in dirt: Foot traffic, pet paws, mud tracked from yard
  • Stain/sealer residue: Old failing stain needs removal before re-staining

Combine with Other Services

Wash + Stain: The most common combo we wash, brighten, dry 48 hrs, then stain. See staining services & pricing.

Wash + Inspection: While washing, we inspect every board, joist connection, and fastener. If we find structural issues, we'll tell you before any damage spreads. Safety inspection checklist.

Deck + House + Concrete: Bundle deck washing with house siding and driveway/sidewalk pressure washing for package pricing (save 10-15%).

FAQ

Cost to pressure wash a deck?

a written estimate depending on size. Medium deck (200-400 sqft): a written estimate.

Can you pressure wash composite?

Yes soft wash preferred (low pressure + cleaner). Max 1,500 PSI with fan tip. Never zero-degree nozzle.

How often in Virginia?

Wood: annually (spring before stain). Composite: 1-2x yearly. Virginia humidity makes annual washing important.

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Call Us Anytime+1 (571) 655-7207
Email Usoffice@ldndecks.com
Our Location13704 Winding Oak Cir, Centreville, VA 20121

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