Cleaning cement requires sweeping loose debris first, then treating stains with the right cleaner, scrubbing with a stiff nylon brush, rinsing thoroughly, and letting the surface dry completely.
For the full breakdown, see our best Cleaner For Cement guide.
Whether you’re cleaning an indoor basement floor or an outdoor driveway, the basic workflow stays the same: remove what’s loose, apply the right cleaner, scrub, rinse, and dry. The differences come down to which cleaner and which tool you use based on where the cement is and what’s on it.
Cleaning Cement Outdoors: Driveways, Patios, and Walkways
Outdoor cement gets dirt, oil, tire marks, and mildew that indoor floors usually don’t. For oil or grease stains, absorb the spill first: cover it with cat litter or baking soda, let it sit for several hours, sweep it up, then scrub the remaining mark with a degreaser or dish soap and water using a stiff nylon brush.
Indoor Cement Floors: Basements and Garages
Indoor cement needs gentler treatment than outdoor surfaces. Sweep or vacuum thoroughly to remove grit that scratches the finish, then damp-mop with a pH-neutral cleaner or a few drops of mild dish soap in warm water. Avoid soaking the floor — excess moisture can seep into porous cement and cause discoloration. For set-in stains, make a paste of baking soda and water, apply it to the spot, let it dry, then scrub with a soft-bristle brush and rinse.
Stain-Specific Cleaning Tips for Cement
The right approach changes with the stain type. Oil and grease respond best to an absorbent first pass (cat litter or baking soda), then a degreaser scrub. Mold and mildew need a detergent or oxygen bleach solution; scrub, let it sit 10 minutes, then rinse. Paint or adhesive may require a commercial concrete cleaner or repeated applications with a stiff brush. Always wear gloves and eye protection when working with chemical cleaners, and never mix bleach with ammonia-based products.
Cleaning Sealed vs. Unsealed Cement
Sealed cement is easier to clean because the sealant blocks stains from penetrating. Use a mild detergent and a soft mop or brush — avoid pressure washers on sealed surfaces, which can lift the sealant. Unsealed cement is more porous and stains deeper; you may need stronger degreasers or repeated scrubbing, and absorbent treatments like the baking soda paste work well before rinsing. After cleaning unsealed cement, consider applying a penetrating sealer while the surface is clean and dry to make future cleaning much simpler.
Common Cement Cleaning Mistakes to Avoid
Wire-bristle brushes leave scratches and rust spots. Letting cleaner dry on the surface traps residue that’s harder to remove afterward. Skipping the rinse step leaves a sticky film that attracts dirt faster. Stick with nylon brushes, mild detergents, and a thorough rinse each time.
FAQs
Can you use vinegar to clean cement?
Rinse thoroughly after cleaning.
How often should you clean a cement driveway?
Once or twice a year is usually enough unless you spill oil or get heavy moss. A spring cleaning with the pressure washer and a fall sweep to remove leaves that trap moisture is a good routine for most driveways.
Does pressure washing damage cement?
It can, if you use too much pressure or hold the nozzle too close.
References & Sources
- This Old House. “How to Clean Concrete Surfaces” Covers general cleaning workflow and pressure washing guidance.
- Concrete Network. “Caring for Interior Concrete Floors” Details indoor cleaning, mopping, and stain prevention.
- Brickform. “How to Clean Concrete Driveways and Patios” Focuses on outdoor stain removal and pressure washing techniques.
Mo Maruf
I created WellFizz to bridge the gap between vague wellness advice and actionable solutions. My mission is simple: to decode the research and give you practical tools you can actually use.
Beyond the data, I am a passionate traveler. I believe that stepping away from the screen to explore new environments is essential for mental clarity and physical vitality.