Memorial Day is around the corner, the grill is begging to be lit, and your deck looks like it spent the winter in a swamp. You're not alone. Deck and patio cleaning is one of the most common requests we get every spring across the Triangle, and for good reason: between our wet winters, the yellow tidal wave of pine pollen, and a humid climate that grows mildew like a hobby, outdoor surfaces here take more abuse than almost anywhere. Here's what's actually on your deck right now — and how to get it summer-ready the right way.
What Winter and Spring Left Behind
By late May, your outdoor surfaces are wearing several layers. There's the general winter grime — months of rain-splashed dirt, leaf litter ground into the boards, and red clay splatter along the edges. On top of that sits the residue of pollen season, when every horizontal surface in North Carolina turns yellow-green for weeks. And underneath it all, fed by damp shade and humidity, mildew and algae have been quietly colonizing the wood grain, the paver joints, and every corner the sun doesn't reach.
Left alone, this buildup doesn't just look bad. It holds moisture against the surface, which is exactly what wood, and even concrete, doesn't need.
The Slip Hazard Hiding in Plain Sight
That greenish film on a shaded deck or patio isn't just cosmetic — it's algae, and when it's wet, it can be genuinely slick underfoot. A quick summer shower, a splash from the kiddie pool, or morning dew is all it takes to turn a green-tinged step into a slip hazard, and steps and shaded corners are precisely where the film grows thickest. If you've ever felt your shoe slide on a damp deck board, you've met it. Before you fill your outdoor space with kids, guests, and trays of burgers, getting that layer off is a safety project as much as a cosmetic one.
Wood, Composite, and Pavers Each Need a Different Touch
Here's where deck cleaning goes wrong for a lot of DIYers: not every surface should be cleaned the same way.
- Wood decks are soft. High pressure aimed at pine or cedar can etch lines into the grain, splinter board edges, and leave permanent wand marks. Wood calls for lower pressure paired with cleaning solutions that dissolve grime and kill mildew, letting chemistry do what force shouldn't.
- Composite decking is durable but has its own rules — too much pressure can scar the surface texture. A gentle wash with the right solution restores the color without voiding the finish.
- Pavers, stone, and concrete patios can handle more assertive pressure washing, though joints and sand-set pavers still need a careful hand to avoid blasting out the material between stones.
When we clean a deck or patio, we match the method to the material — the same philosophy we bring to every surface, from siding to driveways. You don't have to prep anything, and we use eco-friendly solutions, so the plants around your patio stay happy.
A Clean Deck Is a Longer-Lasting Deck
Regular cleaning isn't just about looks. Mildew and trapped grime hold moisture in wood, accelerating the gray, weathered decay that shortens a deck's life. Cleaning removes that layer and lets the wood dry properly. It's also the essential first step if you're planning to seal or stain this year: sealer applied over dirt and mildew traps the problem underneath and fails early. A professional wash gives stain something clean to bond to — which means the money you spend on that finish actually lasts.
The Payoff: A Space You'll Actually Use
There's a real difference between a deck you apologize for and one you show off. When the boards are clean, the patio is bright, and nothing is slick underfoot, your outdoor space becomes what it was built to be — the extra room your home gains every summer. From Cary and Apex to Holly Springs and across the Triangle, we help homeowners get there in a single visit, with a fixed start and end time and a streak-free, satisfaction-guaranteed result.
Let's Get You Ready for Cookout Season
Summer doesn't wait, and neither should your deck. Call Equinox at (984) 212-2799 or email Info@equinoxnc.net and we'll have a free, no-obligation estimate to you within 24 hours. Cleaner spaces, happier lives — starting with the one right outside your back door.