How to Clean a Pebble Shower Floor—Without Damaging the Stone or Grout

Keeping your shower tile gleaming takes a consistent cleaning routine, but not all shower surfaces require the same care. Pebble shower tiles demand a different—and often more involved—maintenance approach than smooth tile. If you already have a pebble shower, you likely know how challenging it can be to prevent residue buildup. And if you're considering installing one, it's important to understand the upkeep required to keep it looking new.

We spoke with cleaning experts to learn how to properly clean a pebble shower, which products to use and avoid, and the ideal maintenance schedule to help your shower stay fresh and beautiful.

Why Pebble Shower Floors Need More Cleaning

Pebble tile adds beautiful visual detail, but it also requires a more hands-on maintenance routine. Still, when you stay on top of upkeep, the extra effort is often worth the look.

Pebble showers tend to get dirty faster than regular, smooth shower tiles because their uneven, porous surface traps soap scum, body oils, hard water, and product residue more easily. "The grout lines are also deeper, which means even more places for buildup to hide," says Alexia Ford, CEO of Passion Organizing. "And since water doesn’t drain as evenly across pebble tile, the floor stays damp longer, which is why mildew shows up faster on pebbles than on flat tile."

According to Jennifer Parnell, co-founder of Humble Suds, pebble showers also require significantly more grout per square foot than traditional tile layouts during installation, creating additional areas where dirt and grime can accumulate.

But with the right cleaning approach and a consistent maintenance routine, pebble shower floors can be cleaned effectively and kept looking fresh.

What Not to Use on Pebble Shower Floors

Because pebble flooring is typically made of natural stone, it's important to preserve its beauty while cleaning. Avoid abrasive cleaners such as vinegar, bleach, lemon-based products, descalers, and rough scrub pads, Ford warns. These cleaners can scratch the stone's surface and break down the grout sealant.

"It’s also worth noting that not all alkaline cleaners are automatically stone-safe," Parnell says. "Highly caustic or industrial-strength alkalines can damage sealers or dull stone over time, so be sure you are using something gentle like baking soda or a product that says stone safe."

Hydrogen peroxide can be used sparingly to brighten grout, but it should always be spot-tested first, Ford suggests. On natural stone, it acts more as a bleaching agent than a cleaner.

How to Clean a Pebble Shower Floor

Parnell and Ford share their expert insights on the materials and tools essential for cleaning a pebble shower, along with a step-by-step guide for the best results.

Materials and Tools You'll Need

Most pebble shower floors are made of natural stone, so it's important to use gentle, stone-safe products rather than traditional, chemical-heavy tile cleaners, Ford warns. "Gentle, alkaline-based options are often the safest and most effective," Parnell says.

A simple paste made from baking soda, water, and a drop or two of mild dish soap works well, as does a stone-safe, nonabrasive cleaning paste. Use soft nylon or nonabrasive scrubbing brushes to reach the contours of the stones and grout, and avoid scratching the stone's surface.

Ahead, Parnell and Ford share the five essential materials and tools you'll need to properly clean a pebble shower floor.

• pH-neutral stone cleaner
• Warm water with a little mild dish soap
• Soft-bristle brush
• Grout brush for targeted areas
• Microfiber cloths

Step-by-Step Cleaning Guide

Step 1: Rinse with warm water to loosen dirt and residue.

Step 2: Apply a cleaner using either a pH-neutral stone cleaner (let it sit for 10 minutes) or a baking soda paste made from two parts baking soda, one part water, and a drop of mild dish soap.

Step 3: Scrub gently in small, circular motions with a soft, non-abrasive brush.

Step 4: Focus on the dips between the stones, where buildup tends to collect.

Step 5: Clean the grout lightly with a grout brush, avoiding heavy pressure.

Step 6: Rinse thoroughly to remove all cleanser and residue.

Step 7: Spot-treat stubborn areas with a stone-safe, alkaline cleaner, if needed.

Step 8: If needed, brighten the grout with 3% hydrogen peroxide, and spot-test first.

Step 9: Dry completely with microfiber towels.

Step 10: Reseal every six to 12 months with a penetrating stone sealer.

How to Keep a Pebble Shower Floor Looking New

Consistent upkeep is essential for pebble showers. Sealing the stone and grout with a penetrating sealant helps reduce moisture absorption, making routine cleaning easier, according to Parnell. After showering, leave the shower door open and ensure good airflow to reduce humidity in the bathroom, which discourages mold and mildew growth.

In addition to sealing the stone and grout and maintaining proper ventilation, regular cleaning helps prevent buildup and reduces the need for frequent deep cleans.

Below, Ford shares a simple cleaning schedule to help keep your pebble shower floor looking new.

Daily:

• Rinse the entire shower with warm water.
• Squeegee or push water toward the drain.
• Run the fan for 20 to 30 minutes after showering.

Three times a week:

• Lightly wipe down the tile with a stone-safe cleanser.

Weekly:

• Fully clean using a pH-neutral cleaner.
• Dry all surfaces afterward.

Monthly:

• Check grout for cracks or worn areas.
• Touch up grout sealer as needed.

Every 12 months:

• Deep clean the shower and fully reseal the grout.