Cleaning Travertine and Natural Stone Patios

The rule that matters most: no acid

Travertine, limestone and marble are calcium-based stones. Acids react with them and leave dull, rough spots called etching. That includes vinegar, lemon juice, many bathroom cleaners, rust removers and muriatic acid. On a patio, etching shows up as dull patches or a rough texture where a cleaner sat.

So the base method is simple. Use a pH-neutral stone cleaner or a mild detergent, a soft brush, and low to moderate pressure. That handles normal dirt, pollen, leaf stains and footprints on most natural stone patios in Los Angeles.

Why travertine has holes, and why they matter

Travertine forms with natural voids. Indoor tile is usually filled at the factory. Outdoor pavers are often left tumbled and partly unfilled, which gives them that soft, aged look and a better grip when wet. Those holes collect dirt, and over time small holes can open into larger pits.

A narrow pressure tip held close can enlarge pits and break thin edges. A wide fan tip, a surface cleaner run at a gentler setting, or plain brushing and rinsing keeps the face intact. Open pits can be refilled with a matching filler, which is a repair job rather than cleaning.

How we approach a travertine patio

Sweep and blow off debris first, including the joints. Pre-wet the stone so the cleaner stays on top instead of soaking deep into dry pores. Apply the neutral cleaner, let it dwell, and brush the dirtier areas, especially under furniture and along edges where leaves collect. Rinse thoroughly, working away from the house and toward where the water should go.

If there are dark organic spots in shaded corners, a diluted oxygen-based cleaner tested on a hidden spot is usually safer than strong chlorine mixes, which can bleach or leave residue in porous stone. Rinse well either way.

A surface cleaner can work on flat, well-set travertine pavers if the pressure is kept moderate and the unit glides without catching edges. On tumbled pavers with chipped corners or uneven setting, hand brushing and a fan tip are safer. If you have pavers set on sand, expect to top up the joint sand after cleaning, because some always washes out.

Pool decks: chlorine, salt and hard water

Travertine is popular around pools, and pool decks bring their own problems. Splash-out from chlorinated or salt pools leaves residue, and LA's hard water leaves white spots and rings where water evaporates. The trap is that most hard water removers are acidic, which is exactly what etches travertine.

Look for products labeled safe for calcium-based stone, test in a hidden area, and expect some mineral spots to only lighten rather than disappear. Rinsing the deck with fresh water after heavy pool use and keeping it sealed slows the buildup. For slip concerns and algae, our pool deck cleaning guide goes deeper.

Sealing natural stone

A penetrating, breathable sealer helps natural stone resist oil, wine and leaf stains, and it makes cleaning easier. It does not make stone acid-proof, and it wears with sun and foot traffic. A simple check is to drop water on the stone. If it darkens quickly, the sealer is worn.

Seal only after a thorough clean and once the stone is fully dry, which can take a few dry days. Avoid glossy topical coatings on outdoor stone around pools, since they can get slippery and may trap moisture.

Between cleanings, a little routine goes a long way. Sweep often, since grit acts like sandpaper underfoot. Wipe up wine, citrus juice and soda right away, because they are acidic. Put saucers under planters to stop rust and water rings, and use a pH-neutral cleaner for spot cleaning instead of whatever is under the kitchen sink.

Honest expectations and cost

Cleaning restores color and removes surface grime. It will not remove etching, fill holes, fix cracked pavers or level stones that have settled. Old rust and deep oil stains may only lighten. Etched areas usually need honing or polishing by a stone restoration specialist.

As of October 2026, our patio cleaning rate is $0.65 per square foot, with a $195 minimum per visit. A 300 square foot patio works out to $195, so it sits right at the minimum. Adding a driveway or walkway on the same visit earns a 5 percent bundle discount. Say Wash It confirms the flat price before work begins.