How to Clean a Patio? | Full Surface-Safe Process

A grimy patio makes even the nicest backyard feel neglected, but the fix isn’t complicated or expensive. The right method depends on your paving material and what you’re cleaning off — algae, mud, or ordinary grime. Here’s the process that works without damaging the surface or burning an afternoon on a rental machine.

What You Need Before You Start

Gather a stiff-bristled broom or brush, a bucket, mild dish soap or degreasing cleaner, white vinegar for spot treatment, and a garden hose with a nozzle. For stubborn stains on compatible surfaces, a pressure washer on its lowest setting and a fan tip works well — but skip it for chipped or loose paving. Move all furniture, pots, and decorations off the patio first, and wet down nearby plants so cleaning solutions don’t damage them.

The Basic Patio Cleaning Sequence

Skip the dry sweep and you turn dirt into mud. Sweep the entire surface thoroughly with a stiff broom before any water touches the paving — loose debris and leaf stains wash off easier when they haven’t turned into paste.

Fill a bucket with warm water and a squirt of dish soap. Pour or spray the soapy water over a small section of the patio, let it soak for a few minutes, then scrub with the stiff brush in two directions — back and forth, then side to side — to lift embedded dirt. Rinse that section with a hose before moving on. Work section by section from the far end of the patio back toward the house, so you’re never walking across a freshly rinsed area. Once the whole patio is scrubbed and rinsed, let it dry completely — usually a full day if the weather is mild — before putting furniture back.

Treating Stains, Algae, and Moss

For stubborn stains, green algae patches, or mossy spots between pavers, a vinegar-and-water solution handles most cases without harsh chemicals. Mix equal parts white vinegar and water in a spray bottle or watering can. Test it on a small, inconspicuous corner of the patio first — some soft stone surfaces react poorly to acid. Spray the affected areas, let it sit for 20–30 minutes, then scrub with your stiff-bristled brush. Hose it off thoroughly and don’t let the vinegar dry on the surface before rinsing. For rust or grease marks, make a paste of baking soda and a little water or vinegar, apply it directly to the stain, let it sit for 10 minutes, scrub, and rinse.

If you’re eyeing a dedicated product instead of household ingredients and need a comparison of the best options for your surface, our roundup of the most effective patio cleaners covers what works on concrete, stone, and pavers without damaging the joints.

Pressure Washing: When and How

Pressure washing saves time on large, flat concrete patios, but it’s easy to overdo it. Use the machine’s lowest pressure setting and a fan-tip nozzle, and hold the wand at least 12 inches from the surface — any closer and the jet can etch the concrete or blow out sand between pavers. Work in slow, even passes, keeping the nozzle moving at all times. Never concentrate the spray on one spot. Soft stone like porcelain or sandstone needs the same low-pressure treatment, and chipped or cracked paving shouldn’t be pressure washed at all. For most patios, a stiff brush and a hose with a good nozzle produce the same result without the risk.

Source guidance from Gardeners’ World and Martha Stewart confirms these steps for concrete, pavers, porcelain, and sandstone surfaces.