McMorris Power Washing provides professional deck cleaning across Long Island, including Suffolk and Nassau County. We safely soft wash and power wash wood, composite, and Trex decks to remove algae, mold, and mildew. Every job is backed by our 100% satisfaction guarantee, and quotes are free.
Remember when your deck was the pride of your backyard?
We’ll bring that feeling back.
Your Outdoor Space Deserves Professional Care
Atlantic humidity brings more than ocean breezes. It brings algae, mildew, and organic buildup that ages your deck fast.
Professional deck cleanup removes what regular hosing can’t touch. We specialize in residential deck maintenance and cleaning across Suffolk and Nassau. Wood gets gentle treatment. Composite receives specialized care. Treated lumber gets exactly what it needs. Each material type responds differently to cleaning. We adjust our approach for yours.
Many homeowners pair deck cleaning with house washing, patio & paver cleaning, or walkways and sidewalks cleaning for a complete outdoor refresh.
Clear Expectations, Zero Surprises
We check material condition, growth patterns, damage severity. This shapes everything that follows.
We use soft washing (under 1000 PSI) for most decks, cleaning thoroughly without harm. Our eco-friendly cleaners dissolve organic growth.
Green coating degrades your deck while creating slip hazards. Our biocide treatment kills growth at the root.
We don't leave until you approve. Questions get answered. Concerns get addressed immediately.
Regular maintenance prevents wood rot and structural failure. We catch small problems before they become expensive.
Professional Results Without the Risk
Timing Determines Outcomes
Spring makes sense for most Long Island homes. Winter damage, including snow, ice, freeze-thaw cycles, needs addressing before summer entertaining starts.
The ideal temperature for deck wash?
Between 50-80°F. Colder temperatures prevent cleaning solutions from activating properly. Heat causes premature drying before products work completely.
We schedule strategically. Early season cleaning means enjoying beautiful outdoor space all summer instead of booking service during peak use months.
Fall offers another smart window. Humidity issues peak in late summer, creating maximum growth conditions. Addressing buildup then prevents winter complications.
For most Long Island decks, we soft wash – here’s why
Choosing the Right Method Prevents Damage
Most residential deck cleanup benefits from this approach. Pressure stays under 1000 PSI. Surfactant-safe detergents do the heavy lifting.
Perfect for
Limited situations justify higher pressure, concrete surrounds, heavily soiled commercial spaces, paint removal, pre-refinishing prep.
Best for
We Solve What Coastal Living Creates
Humidity accelerates growth. That slippery coating appears fast here. Our algae removal deck treatments eliminate current problems and slow future return.
Black spots spreading across boards signal active mildew. This goes deeper than surface staining. Our mold removal process stops progression.
UV exposure breaks down lignin in wood, creating that weathered gray appearance. We restore natural tones with proper wood deck cleaner formulations.
We handle composite deck cleaning services on Trex, TimberTech, and other composite brands, removing tannin stains without scratching or dulling surfaces.
If your deck becomes dangerous when wet, organic growth is the culprit. We make surfaces safe again.
Every deck is different, so we quote after a quick, free inspection, no guessing, no inflated estimates. A few things shape your price
Deck size (square footage)
Material (wood, composite, or Trex/TimberTech)
Current condition and buildup (light dirt vs. heavy algae or mold)
Whether staining or sealing is bundled in
We quote accurately after seeing your deck. No inflated estimates. No pressure. Just fair pricing for quality work.
If something’s not right, we fix it. Your satisfaction drives our business simple as that.
We receive your request instantly via SMS and usually respond within minutes!
Maximum Impact, Coordinated Timing
Many homeowners pair cleaning with staining for maximum impact. Fresh stain on clean wood extends protection and enhances appearance dramatically.
We coordinate both services efficiently, saving you time and ensuring proper prep work. Ask about deck staining and sealing package pricing when you call.
Local Coverage Across Suffolk and Nassau County
Huntington, Smithtown, Commack, Babylon, Brentwood, Deer Park, Dix Hills, and Wyandanch
Syosset, Woodbury, Plainview, Hicksville, Levittown, and Farmingdale
Stop looking at that dirty deck washing it looked better. Make it happen.
Transform your Deck Today
Pricing varies by deck size, material, and condition. We provide free quotes after a quick pre-inspection.
Soft wash uses low-pressure cleaning (under 1000 PSI) with stronger solutions. Power wash uses high pressure. We recommend soft washing techniques for most decks to prevent damage.
Absolutely. Composite deck services require gentle cleaning methods and specific solutions. We adjust pressure and products for Trex, TimberTech, and other brands.
Yes. Our process includes biocide treatment for algae removal and mildew removal. We eliminate growth at the root to prevent quick return.
Spring preparation (April-May) works best. The ideal temperature for deck wash is 50-80°F. Fall cleaning also helps avoid winter damage.
Yes, we clean pool decks and under-deck areas as part of our deck cleaning service. If your pool area needs attention too, see our pool cleaning services for full-area care.
Regular cleaning prevents moisture buildup that causes wood rot. Proper maintenance can extend deck lifespan by 5-10 years, delaying expensive deck restoration.
Yes. All our cleaning solutions are eco-friendly, biodegradable, and safe for families, pets, and landscaping. Tough on dirt, gentle on everything else.
Always clean first. Stain and sealant won’t adhere properly to dirty surfaces. We offer deck cleaning and staining services as coordinated packages.
Our treatments remove mold and mildew that create slippery conditions. We also address humidity issues and organic growth that make wet decks dangerous.
Yes. Our deck cleaning service covers all Suffolk and Nassau areas including Babylon, Huntington, Smithtown, Commack, Brentwood, Deer Park, and Wheatley Heights.
Pricing depends on deck size, material (wood vs. composite), and current condition, plus whether you’re bundling in staining or sealing. We provide a free, no-obligation quote after a quick on-site look.
Reviewed, Evaluated and Accredited
Meets All 8 Standards of Accreditation
BBB Accredited Since: 9/10/2024
