Concrete hides dirt well, until one day the driveway looks noticeably darker than the neighbors’. In Springfield’s humid climate, driveways and patios collect algae, mildew, red clay and grime faster than most homeowners expect. Here are seven signs your driveway or patio is overdue for a pressure wash, and what to do about each one.
1. Green or Black Patches
Green, black or slimy patches are algae, mold or mildew. They grow fastest in shaded areas and near downspouts, and they can make the surface slippery when wet.
2. The Surface Feels Slippery
If your patio or walkway feels slick after rain, organic growth is usually the cause. This is a safety issue as much as a cosmetic one, especially on steps and slopes.
3. Oil and Tire Marks
Dark spots under where cars park and tire marks near the garage soak deeper into concrete the longer they sit. Treating them sooner gives better results.
4. Orange or Brown Stains
Orange-brown stains near flower beds and bare soil are often red clay, common across the Ozarks. Rust from furniture and fertilizer can look similar.
5. Weeds and Moss in the Joints
Plants growing in cracks and expansion joints mean dirt and organic matter have built up. Moss along edges is a sign the area stays damp.
6. The Concrete Looks Gray and Dull
Concrete that has lost its lighter color is usually coated in fine grime rather than permanently discolored. A proper cleaning often restores much of the original look.
7. You’re Getting Ready to Sell or Host
A clean driveway and patio make a strong first impression. If you’re listing your home or hosting an event, cleaning is one of the quickest ways to improve curb appeal.
What to Do Next
Light dirt and small patios can be a reasonable DIY job. For large driveways, heavy stains or slippery algae, a professional with a rotary surface cleaner usually gives a more even, safer result. Learn more in our driveway and concrete cleaning guide, or check typical prices in our pressure washing cost guide.
Frequently Asked Questions
How often should a driveway be pressure washed?
Most Springfield driveways benefit from a cleaning about once a year. Shaded driveways, or those under trees, may need it more often.
Can I pressure wash my driveway myself?
Yes, with care. Use a surface cleaner attachment, keep the wand moving, and avoid holding the nozzle too close, which can etch the concrete.
Will pressure washing remove all stains?
Dirt, algae and mildew usually come off well. Old oil, rust and red clay stains may need pre-treatment and may lighten rather than disappear completely.
Get Free Quotes from Local Pros
Want a professional to handle it? Request free quotes from independent local professionals in Springfield, Nixa, Ozark, Republic and nearby towns. It’s free, and you’re under no obligation to hire anyone.
