Professional Deck Cleaning in Maryland
Restore your deck before staining season — results that speak for themselves.
About This Service
Your deck takes more abuse than almost any other surface on your property — constant sun exposure, rain, foot traffic, and organic growth all work to break down wood fibers and grey the surface. Whether you're prepping for a new stain coat, hosting a summer gathering, or simply want your outdoor space looking its best, OneNation's professional deck cleaning service delivers a deep, thorough clean that protects your investment.
We clean all deck types — pressure-treated lumber, cedar, redwood, composite, and Trex. Each material requires different pressure settings and cleaning solutions. Wood decks need gentle treatment to avoid raising grain or causing fuzzing; composite decks need targeted chemistry for organic growth without damaging the composite material. We know the difference and clean each type accordingly.
What’s Included
- ✓Prep for Stain & SealantA professionally cleaned deck provides the bare, open-grain surface that stains and sealants need to penetrate and bond properly. Skip this step and you're wasting money on product.
- ✓Safe on Wood & CompositeWe calibrate pressure, temperature, and cleaning solution concentration specifically for your deck material — protecting the surface while removing all contamination.
- ✓Mold & Algae EliminationDeck surfaces are prime habitat for mold, mildew, and algae. Our treatment kills these organisms and removes the discoloration they leave behind.
- ✓Slip SafetyAlgae and mildew on deck boards create dangerous slip hazards. Our cleaning restores safe, non-slip texture to deck surfaces.
Real Results
Recent Deck Cleaning Work
Deck
Deck
Deck
Our Process
Deck Inspection
We assess the deck material, existing finish condition, mold and mildew level, and determine appropriate pressure and chemistry for the job.
Furniture & Perimeter Protection
Deck furniture is moved and nearby landscaping is protected before we begin the cleaning process.
Deck Wash
Low-to-medium pressure washing with appropriate deck cleaning solution, working with the grain to clean boards thoroughly without raising grain or damaging composite material.
Rinse & Brightening
Final rinse removes all cleaning solution. For wood decks, we can apply a wood brightener to restore natural wood tones and open the grain for staining.
Plant & Landscape Safe
We pre-wet and protect every plant, shrub, and lawn bordering the work area before we start, and use biodegradable cleaning solutions that rinse clean. If anything in your landscaping is damaged by our work, we make it right at no cost to you.
Our Guarantee
If you’re not satisfied with the deck cleaning we did, we come back within 7 days and re-clean the area at no charge — no argument, no fine print.
Frequently Asked Questions
It depends on the material. Wood decks require low-to-medium pressure to avoid raising the grain or causing fuzzing. Composite decks are pressure washed at lower PSI. We assess your deck and use the correct technique.
Ready for Professional Deck Cleaning?
Get your free estimate today. We serve Silver Spring, Rockville, Bethesda, Gaithersburg, and all of Montgomery County.