Tile is one of the most durable flooring and wall materials available, but grout lines — the mortar between tiles — are porous and prone to staining, mold, and discoloration. The tile itself typically requires minimal maintenance; the grout requires active care. This guide covers both.
Different tile materials require different cleaning approaches:
Ceramic and porcelain: Dense, non-porous, and very durable. These can handle most cleaners, though harsh abrasives still scratch glazed surfaces. Most bathroom and kitchen tile is ceramic or porcelain.
Natural stone (marble, travertine, slate, limestone): Porous, acid-sensitive, and requiring specialty care. Never use vinegar, lemon juice, or other acidic cleaners on natural stone — they etch the surface permanently. Use only pH-neutral stone cleaners.
Glass tile: Non-porous but shows water spots and fingerprints more readily. Clean with glass cleaner or a vinegar solution and a soft cloth.
Quarry tile (unglazed terracotta): Very porous. Requires sealing and periodic resealing. Acidic cleaners will damage the seal.
The biggest enemy of bathroom tile and grout is soap scum — a combination of soap, hard water minerals, and body oils that bonds to surfaces and becomes progressively harder to remove.
Prevention: A squeegee used after every shower removes the water and soap film before it dries and bonds. This single habit dramatically reduces cleaning effort. After squeegeeing, a quick spray of daily shower cleaner (spray-and-walk-away products like Method Daily Shower) further prevents buildup.
Weekly cleaning: Spray tile with a bathroom cleaner and wipe with a microfiber cloth or sponge. Focus on the lower half of the shower walls and the tub surround where soap scum accumulates most.
Backsplash tile behind the stove accumulates grease and cooking residue. A weekly wipe with a degreaser or dish soap solution prevents buildup.
Floor tile sees more food drips and foot traffic — mop weekly with a pH-neutral tile cleaner. Don’t use excessive water — wring the mop until barely damp.
Grout starts white (or a chosen color) and gradually darkens from dirt, mold, and mildew absorption. Regular cleaning slows this process; targeted treatment can restore grout close to original.
Bleach-based cleaners: Apply a bleach-based grout cleaner (like Tilex Mold & Mildew) to grout lines. Let it dwell 5–10 minutes, then scrub with a grout brush. This works well on white or light-colored grout and is highly effective on mold and mildew.
Oxygen bleach (OxiClean): Mix with water into a paste, apply to grout, let sit 30 minutes to an hour, scrub and rinse. Effective and safer for colored grout than chlorine bleach.
Baking soda paste + hydrogen peroxide: Apply baking soda along grout lines, spray hydrogen peroxide on top (it will fizz), wait 10 minutes, scrub with a toothbrush. A good chemical-free option.
Electric toothbrush for mechanical advantage: The high-frequency vibration of an electric toothbrush is dramatically more effective for grout scrubbing than manual brushing. An inexpensive replacement head dedicated to grout cleaning is an effective tool.
For grout that’s permanently stained, physically damaged, or has grown mold that penetrates below the surface:
Grout colorants and sealers: Products like Polyblend Grout Renew apply a color-coating over existing grout, restoring the original color and adding a surface sealer. These work best on intact, clean grout (clean as well as possible first). Results last 1–3 years.
Grout removal and replacement: The most permanent solution. Use a grout saw, oscillating multi-tool with grout blade, or rotary tool to remove grout between tiles. Mix new grout to the original color (take a photo to a tile shop for color matching), apply with a grout float, let cure, and seal.
Regrout is labor-intensive but produces results that look identical to new installation.
Hard water / mineral deposits: White or chalky deposits from hard water respond to acidic cleaners (vinegar, citric acid, CLR) on ceramic and porcelain tile. Apply, let sit 10–15 minutes, scrub, rinse. Don’t use on natural stone.
Soap scum (heavy): Commercial soap scum removers contain chelating agents that dissolve the calcium-soap complex. Apply, let dwell, scrub. For very heavy buildup, a plastic scraper used at a low angle can remove the bulk before chemical treatment.
Mold and mildew: Bleach-based products penetrate and kill mold spores. Apply, let dwell without wiping (3–5 minutes), then wipe. Adequate ventilation is essential when using bleach in enclosed bathroom spaces.
Rust stains: Rust stains require a rust-specific cleaner containing oxalic acid or similar chemistry. Bar Keepers Friend (sodium oxalate) is effective on rust, particularly on grout. Never use standard bleach on rust — it can make rust stains darker.
Grease: Dish soap (highly concentrated degreaser) applied directly and allowed to sit 5 minutes cuts through grease effectively. For floor grease stains, a paste of baking soda and dish soap works well.
Grout sealer is the most effective way to prevent future staining. Sealer fills the pores of the grout, preventing liquid penetration before stains set.
How often: New grout should be sealed 48–72 hours after installation (after the initial cure but before regular use). Reapply sealer once or twice a year in wet areas (showers, tubs) or on kitchen floors.
Test: Drop water on the grout. If it beads, sealer is still effective. If it soaks in, it’s time to reseal.
Application: Apply sealer with a small brush along each grout line, wipe off excess from the tile surface immediately, let cure per manufacturer’s instructions.
Types: Penetrating sealers (most common, best for bathroom and kitchen grout) absorb into the grout without changing its appearance. Topical sealers form a surface coating that changes the grout’s sheen — less common for floor grout.
Clean tile is a maintenance game — the easier you make it to stay on top of routine cleaning, the less intensive work is ever required.