How to Clean Patio Pavers: Remove Stains, Moss, and Grime

The easiest way to clean patio pavers is a firm scrub with dish soap and warm water for routine dirt, or a baking soda paste for stubborn stains. Moss and algae need a diluted bleach or white vinegar treatment. This guide covers all common paver problems and how to tackle each one without damaging the jointing sand or the paver surface itself.

What You’ll Need

• Garden hose with spray nozzle (or pressure washer, 1,500–2,000 PSI)
• Stiff-bristle deck brush
• Bucket of warm water
• Dish soap or dedicated paver cleaner
• Baking soda
• White vinegar (for moss and organic growth)
• Bleach (optional, for heavy moss/algae)
• Rubber gloves and eye protection
• Weed puller or stiff brush (for between-paver weeds)
• Polymeric sand (if re-sanding joints after cleaning)

Safety and Precautions

Wet pavers are extremely slippery — wear shoes with grip and lay a dry towel at transitions to avoid falls. Bleach solutions can kill nearby plants and grass; protect surrounding landscaping with plastic sheeting before applying. Never mix bleach with vinegar. Eye protection is recommended when using any bleach spray. If using a pressure washer, start on the lowest effective setting — excessive pressure dislodges jointing sand between pavers, which requires replacement. Check our guide on cleaning products to avoid mixing before you start.

How to Clean Patio Pavers Step by Step

1. Remove Furniture and Debris

   Move all outdoor furniture, pots, and decor off the patio. Sweep or blow away loose debris — leaves, dirt, and twigs. The more you remove dry, the less you need to scrub later. Check our guide to outdoor furniture cleaning to handle that separately.

2. Pre-Wet the Pavers

   Spray the entire patio surface with a garden hose to wet it down. This prevents cleaning solution from soaking too quickly into porous pavers and loosens surface dirt.

3. Apply Cleaning Solution

   Mix 2–3 tablespoons of dish soap per gallon of warm water. For a more powerful cleaner, use a dedicated alkaline paver cleaner from a home improvement store. Pour or spray evenly across the patio surface and let it dwell for 5–10 minutes.

4. Scrub Thoroughly

   Use a stiff-bristle deck brush to scrub the pavers in circular motions. For individual stain spots, use a hand scrub brush for more focused pressure. Work in 4-foot sections to keep the solution from drying before you rinse it.

5. Treat Moss, Algae, and Mildew

   Mix 1 cup of bleach per gallon of water (or use undiluted white vinegar for a non-chemical approach). Apply directly to green or black growth, let it sit 15 minutes, then scrub and rinse. Vinegar takes longer but is safer for nearby plants. For persistent mildew odors, our mildew smell removal guide covers treatment options.

6. Treat Oil and Grease Stains

   Cover fresh oil stains with baking soda or cat litter and let it absorb for 30 minutes before sweeping away. Then scrub with dish soap. For set stains, a degreasing cleaner (like Simple Green) worked in with a stiff brush is more effective than soap alone.

7. Rinse with Strong Water Pressure

   Rinse thoroughly with a garden hose — use a nozzle set to a strong stream. If using a pressure washer, keep it at 1,500–2,000 PSI and maintain a 12-inch distance. Hold the nozzle parallel to joints (not directly into them) to avoid washing out jointing sand.

8. Let Dry and Inspect

   Allow pavers to dry completely — usually 2–4 hours in sunlight. Once dry, check jointing sand levels. If you washed out significant sand, re-fill with polymeric sand and sweep it in before the next rain.

How to Remove Weeds Between Pavers

Weeds between pavers are a separate issue from cleaning but always worth tackling at the same time. Pull weeds by hand or with a weeding tool first, then pour boiling water into the gaps to kill roots (safe for the pavers, kills weeds without chemicals). Follow up with polymeric jointing sand to seal gaps — this prevents future weed seeds from establishing.

Pro Tips for Cleaner Pavers

• Seal after deep cleaning: A paver sealant applied after cleaning creates a barrier against stains, moss, and weathering. It also makes future cleaning dramatically easier — dirt doesn’t bond to sealed surfaces the same way. Reapply every 2–3 years.
• Clean annually at minimum: Spring cleaning before patio season and fall cleaning before winter is the ideal schedule. In shaded or damp areas, clean every 6 months to stay ahead of moss growth.
• Combine with pressure washing the deck: If you’re hauling out cleaning equipment, do the deck and porch at the same time. See our pressure washing tips guide for the best technique.
• Don’t overlook between-paver gaps: The joints collect organic debris that turns into moss and weed beds. A narrow brush or pressure washer fan tip cleans joints effectively.
• Use enzyme cleaner for pet stains: If pets use the patio, enzyme-based cleaners break down urine and fecal residue more completely than soap, eliminating the odor that attracts animals back to the same spot.

Troubleshooting Paver Cleaning Problems

White powdery deposits (efflorescence): This is mineral salt leaching through the paver. Use an efflorescence cleaner (acid-based) and scrub firmly. Rinse thoroughly. Don’t confuse this with soap residue — rinse more if it’s from your cleaning solution.

Pavers look dull after cleaning: Pavers typically look best after sealing. Cleaning alone may reveal surface wear — a fresh sealer coat restores color and sheen.

Moss keeps coming back: This means your patio has too much shade and moisture. Trim overhead plants to increase sunlight exposure. A moss-prevention spray (iron sulfate-based) applied twice a year inhibits regrowth between cleanings.

Oil stains didn’t come out: Try a commercial concrete degreaser and let it soak for an hour before scrubbing. Very old set-in oil stains may be permanent, but consistent degreasing will fade them over time.

Frequently Asked Questions

What is the easiest way to clean pavers?

For routine maintenance, a stiff brush and soapy water followed by a garden hose rinse is the easiest approach. For a full seasonal clean, a pressure washer on low setting (1,500 PSI) cuts cleaning time in half. The ease depends on the amount of buildup — monthly light cleaning is far easier than annual deep cleaning.

What is the best homemade patio cleaning solution?

Mix 2 tablespoons of dish soap, ½ cup of baking soda, and 1 gallon of warm water for a strong all-purpose paver cleaner. For moss and algae, undiluted white vinegar or a 1:10 bleach solution works faster. Apply, let dwell 10 minutes, scrub, and rinse.

How do I make my pavers look new again?

Deep clean first to remove all staining, moss, and efflorescence. Once dry, apply a paver sealer — either a penetrating sealer for a natural look or a wet-look gloss sealer to enhance color. This restores color and creates a protective barrier that makes the pavers look significantly newer.

Can I clean patio pavers without chemicals?

Yes. Boiling water poured directly onto moss and weeds kills them on contact. A paste of baking soda and water scrubs out stains effectively. Pressure washing alone handles routine dirt with no chemicals required. For regular cleaning, these methods work well for most homeowners.

How often should patio pavers be cleaned?

Once or twice per year with a full scrub is sufficient for most patios. In shaded, damp, or heavily used areas, quarterly light cleaning prevents moss and stain buildup from becoming a major job. Spot-clean stains immediately when they happen for the easiest removal.

Conclusion

Clean patio pavers make the whole outdoor space look better — and regular cleaning prevents the expensive issues of deterioration, weed overgrowth, and deep staining. Routine soap-and-water scrubbing handles the maintenance. Annual deep cleaning with a pressure washer and sealant application keeps them looking sharp season after season. Ready to tackle the rest of your outdoor space? Check out our deck cleaning guide for the next step.