Why Your Driveway Turns Black in Florida (and How to Fix It)
A new concrete driveway is light gray. A few South Florida summers later, it's dark, blotchy and slick after rain. Here's what's happening and how to bring it back.
What turns concrete dark
Mold and mildew. Concrete is porous. It soaks up rain and stays damp in shaded spots, which is perfect for mold.
Algae. Green and black algae grow where water collects, especially near sprinklers, gutters and lawn edges.
Oil and tire marks. Cars leave drips and rubber marks that soak into the surface.
Rust stains. Irrigation water with high iron content leaves orange marks on concrete and walls.
Dirt and pollen. Fine grime settles into the surface texture over time.
Why it matters beyond looks
A dark driveway makes the whole house look older. Algae and mold also make concrete slippery, which is a real fall risk for kids, older family members and guests. And if you're in an HOA, a stained driveway can earn a violation letter.
How professionals clean it
We use a rotary surface cleaner, a wide spinning tool that cleans evenly without the zebra stripes you get from a handheld wand. Problem areas get a pre-treatment for oil or mold before washing, and a post-treatment helps slow regrowth. Pressure is matched to the surface, so concrete gets cleaned without being etched.
What about pavers?
Pavers need a gentler approach. Too much pressure washes out the joint sand and lets pavers shift. After cleaning, the joints can be re-sanded and the surface sealed to lock in the color.
Keeping it clean longer
Point sprinklers away from the driveway where possible
Rinse off oil spots quickly
Trim branches that keep the surface shaded and damp
Schedule a professional cleaning once a year
Get your driveway back
All Purpose Pressure Washing cleans driveways, sidewalks and pavers from Homestead to Jupiter. Call (305) 303-1211 or request your free estimate. See our driveway and concrete cleaning service.
