Waddle WorksFlorida heat and humidity are rough on concrete. Mildew, algae, dirt and tire marks build up fast, and a light gray driveway can turn dark and slippery in a single summer. If you're in Orlando, Oviedo, Sanford, Winter Springs or anywhere in Central Florida, here's how to pressure wash your driveway the right way, including the chemical pre-treatment and post-treatment steps most DIY guides skip.
What You'll Need
- A pressure washer (gas units around 3,000+ PSI and 3+ GPM make concrete much faster)
- A surface cleaner attachment for even, streak-free results
- A 15° or 25° nozzle for edges and cracks
- A pump sprayer or downstream injector for cleaning solution
- A concrete cleaning solution for mildew and algae, plus a concrete degreaser for oil stains
- A garden hose for wetting and rinsing plants
- Safety glasses, gloves and closed-toe shoes
Step 1: Prep the Driveway and Protect Your Grass
Move cars, trash cans, planters and anything else off the driveway, then sweep or blow off loose dirt, leaves and sand.
Before any chemicals touch the ground, soak the grass, flower beds and shrubs along the edges of the driveway with plain water. Plants that are already full of water absorb much less cleaning solution, which helps prevent brown spots and burned edges on your lawn. This is the same thing we do on every job.
Step 2: Pre-Treat the Concrete
This is the step that makes the biggest difference. High pressure alone doesn't kill mildew and algae. It knocks off the top layer and leaves the roots in the pores of the concrete, so it grows right back.
Apply your concrete cleaning solution across the whole driveway. A diluted sodium hypochlorite (pool chlorine) mix with a surfactant is what most pros use for mildew and algae. Spot-treat oil and grease stains with a concrete degreaser and scrub them with a stiff brush.
Let the solution dwell for about 5 to 10 minutes. Don't let it dry on the surface; mist it with more solution if it starts to dry in the sun. Never mix bleach-based cleaners with ammonia or acid cleaners.
Step 3: Pressure Wash with a Surface Cleaner
Use a surface cleaner for the main driveway. It spins two nozzles under a hood at a fixed height, so the whole surface gets cleaned evenly. Cleaning a whole driveway with just a wand usually leaves "zebra stripes."
Work in sections, slowly, with each pass overlapping the last one a little. Go back over edges, cracks and expansion joints with a wand and a 15° or 25° tip. Keep the nozzle moving and a few inches off the concrete. Holding a narrow tip too close can etch and permanently scar the surface.
Step 4: Post-Treat the Concrete
After washing, apply a light post-treatment of your cleaning solution over the whole driveway. This kills any mildew spores and algae still hiding in the concrete, brightens the finish, and takes care of light striping or shadows the surface cleaner left behind.
Post-treating is what separates a professional-looking result from a driveway that turns dark again a few weeks later.
Step 5: Rinse Everything, Including Your Grass
Give the driveway a final low-pressure rinse to clear any leftover residue, then rinse your grass, plants and landscaping again with plain water to dilute any overspray or runoff. Let the concrete dry fully before you park on it so you can see the finished result.
Common Driveway Pressure Washing Mistakes
- Skipping the pre-treatment. The driveway looks clean for a few weeks, then the mildew comes back.
- Using a narrow tip on the whole driveway. This causes stripes and can etch the concrete.
- Forgetting the plants. Chemical runoff on dry grass can leave brown edges along the driveway.
- Letting chemicals dry in the sun. This can leave spotting and makes the solution less effective.
How Often Should You Pressure Wash Your Driveway in Florida?
For most Central Florida driveways, once a year keeps mildew and algae under control. Shaded driveways, driveways under trees, or ones that get hit by sprinklers may need cleaning every 6 months. Read our full guide on how often to pressure wash in Florida.
Want It Done Right Without the Hassle?
Pressure washing a driveway takes time, the right equipment, and careful chemical handling to protect your concrete and your lawn. Waddle Works pre-treats, cleans, post-treats and protects your landscaping on every driveway pressure washing job in Orlando, Oviedo, Sanford, Winter Springs and across Central Florida.
A standard 2-car driveway starts at $150, and you can see your exact price in seconds with our instant quote. Prefer to talk? Call or text Roman at (321) 464-8370.
— Roman, Owner of Waddle Works 🐧 Last updated October 22, 2026