Clean pavers by sweeping regularly, rinsing with a hose, treating stains with the right product for the stain type and using low pressure instead of a hard blast. Soft washing is the safest way to remove algae and grime. After a heavy cleaning, the joint sand often needs to be refilled.

What is the routine for keeping pavers clean?

Light, regular cleaning prevents most big problems.

•Sweep with a soft broom to remove leaves, dirt and debris before they break down and stain.

•Rinse with a garden hose and a standard nozzle.

•Clear leaves and pine needles quickly, especially in shade and after storms.

•Check the joints for low sand and weeds.

Skip stiff wire brushes, which can scratch the surface and pull sand from the joints. How often you need to do this depends on shade, tree cover and rainfall.

How do you remove common paver stains?

Match the treatment to the stain, and test any product on a small hidden spot first. Products vary by paver type, and natural stone like travertine is more sensitive than concrete.

Oil and grease: Blot fresh spills right away and soak up the rest with an absorbent material such as cat litter. Older stains may need a cleaner made for oil on pavers.

Rust: Often from metal furniture, planters or fertilizer. Use a rust remover made for pavers. Some acidic products can damage stone, so read the label carefully.

Leaf and tannin stains: Brown marks from wet leaves usually fade with sweeping, rinsing and a gentle cleaner.

Algae, moss and mildew: The green, black or gray growth common in our humidity. This is where soft washing works best.

Efflorescence: A white, powdery film that rises from within concrete. It often fades on its own, and special cleaners exist for stubborn cases.

Never mix cleaning chemicals, and wear gloves and eye protection.

Soft wash or pressure wash: which is better?

For most patios, soft washing. Here is an honest comparison.

Soft washing: Low pressure with a cleaning solution that kills and lifts organic growth. It is gentler on the surface and joints, and it works on algae and mildew. It involves chemicals, so plants and runoff need care.

Pressure washing: Fast and good on stubborn buildup, with no chemicals. High pressure can etch the surface, leave stripes and blow out joint sand. The risk is higher for DIY use and for soft stone.

If you pressure wash, use a wide fan tip, keep the wand moving and at a steady distance, and test a hidden spot first. Plan on refilling the joints afterward.

What should you avoid when cleaning pavers?

•Holding a pressure wand too close or in one spot.

•Using muriatic or other strong acids without checking they suit your paver, since they can damage stone and some concrete finishes.

•Mixing bleach with other cleaners, which can create dangerous fumes.

•Using rust or acid products on travertine and other natural stone without checking first.

•Cleaning when the surface is in full sun, since cleaners dry too fast.

•Ignoring plants. Wet them down first and rinse well afterward.

Do Lowcountry conditions change how you clean?

Yes. Heat, humidity and heavy summer rain feed algae and moss, especially in shade. Salt air near the coast leaves a film that builds up over time, so patios on Isle of Palms and other coastal areas may need more frequent rinsing.

Wet, shaded pavers are also slippery, so cleaning is a safety issue as well as a looks issue. Check with your HOA before using any large-scale cleaning method, since some communities have rules on runoff and water use.

When do pavers need re-sanding after cleaning?

Often after a deep clean, and almost always after pressure washing. Joint sand locks the pavers together, keeps weeds down and keeps water out of the base. Cleaning can wash some of it out.

Check the joints once the patio is dry. If sand is low, gaps are showing or weeds are coming through, it is time to refill. The right sand and method vary by paver type and joint width, and the surface needs to be dry. Sealing is a separate, optional step.

Soft washing, re-sanding and sealing are separate paid maintenance services. They are not included with a paver install.

Frequently asked questions

•How often should I clean my pavers?

Sweep often and rinse as needed. A deeper cleaning depends on shade, tree cover and how fast growth returns.

•Can I use bleach on pavers?

Diluted bleach is sometimes used on algae, but it can discolor pavers and harm plants. Test first, rinse well and never mix it with other cleaners.

•Should I seal my pavers after cleaning?

It is optional. Sealing can make cleaning easier and change the color or finish, so ask what to expect before you decide.

•Why do my pavers turn green?

Algae and moss grow in damp, shaded spots, and our humidity feeds them. Cleaning and a bit more sun and airflow help.

•Want help with a new patio or an existing one?

If you are planning a paver project on Isle of Palms or elsewhere around Charleston, we are happy to take a look. Every project starts with a free design and build estimate: an on-site visit and three price points for the same scope at different material levels. Once you book, we create a custom 3D design so you can see the plan before we build. Every paver install includes a 10-year workmanship warranty. No pressure, just straight answers.