To clean a marble floor, dust-mop first, wash with a pH-neutral cleaner in warm water, rinse with clean water and dry the floor. Acids, abrasives and standing water are what damage it.
This guide is for facility and custodial teams caring for marble in lobbies, hotels, offices, banks and public buildings. It covers the routine, the cleaner, stain treatment and the machines that fit each floor.
- Use a pH-neutral cleaner and no acids. The Natural Stone Institute says lemon, vinegar and other acids may dull or etch calcareous stone, and Bona says etching is a chemical change, not a scratch.
- Dust-mop frequently with a clean, dry, untreated mop. The Natural Stone Institute says sand, dirt and grit are abrasive and can damage natural stone, and entrance mats help minimize what reaches the floor.
- Rinse and dry the floor. Bona advises against air drying because porous marble can absorb cleaner, which can lead to stains and etching.
- Skip scrubbing brushes, scouring pads and powered vacuum brushes. Bona says abrasives scratch marble, so ask the stone supplier before putting any machine pad on a polished floor.
Why Is Marble Different From Other Floors?
Marble is soft and porous, so it scratches more easily than granite and absorbs liquids. Bona describes marble as a natural stone that is porous, durable enough for everyday use, and softer than granite or quartzite.
The Natural Stone Institute explains the chemistry. Calcareous stone is composed mainly of calcium carbonate, which is sensitive to acidic solutions, so it recommends mild, non-acidic cleaners. Siliceous stone such as granite generally resists more acids, but the Institute still does not recommend acidic cleaners on it.
For other surfaces, see how to clean slate floors, how to clean terrazzo floors and how to clean ceramic and porcelain tile floors.
How Do You Clean Marble Floors Step by Step?
Dust-mop, wash with a neutral cleaner at the label rate, rinse, and dry. Bona's routine is a daily sweep or dry mop with immediate spot cleaning, then a weekly mop with an appropriate cleaner and a microfiber mop.
- Close the area. Put out wet-floor signs and keep foot traffic off the section being cleaned.
- Dust-mop. The Natural Stone Institute says to use a clean, non-treated dry dust mop. Bona says to use a soft dusting pad rather than a vacuum, and to avoid a vacuum's powered brush on marble.
- Test first. Try the cleaner on a hidden area before the whole floor.
- Mix the cleaner at the label rate. The Natural Stone Institute warns that too much cleaner or soap may leave a film and cause streaks, so follow the manufacturer's directions.
- Mop damp. The Tile Shop says to wring the mop out so it is damp but not soaking, because too much water can penetrate the marble and cause damage.
- Rinse. The Natural Stone Institute says to rinse thoroughly after washing and to change the rinse water frequently.
- Check the recovery tank. If you use a wet vacuum or scrubber, look for foam on the first fill, because foam pulled into a vacuum motor damages it.
- Dry. Dry the floor right away. Bona recommends a clean, untreated microfiber pad rather than letting marble air dry.
Spills are urgent on marble. The Natural Stone Institute says to blot a spill with a paper towel immediately rather than wiping it, flush with water and mild soap, rinse several times and dry thoroughly.
The routine damp-mop product. It is pH-neutral, low-residue and low-foam at label dilution, and is labeled for mop or cleaning-system use on concrete, stone, ceramic, wood, laminate, marble, granite and terracotta. Marble is named on the label, but finishes vary, so test a hidden area first and confirm with your stone supplier. The label says no rinse under normal conditions, but stone-care guidance recommends rinsing thoroughly and drying, so rinse or recover the solution on marble.
Which Cleaner Is Safe for Marble?
A neutral cleaner, stone soap or mild liquid dishwashing detergent in warm water is the safe routine choice. That is the Natural Stone Institute's list for stone surfaces, and Bona says to find a pH-neutral cleaner for best results.
| Product type | Use on marble? | Why |
|---|---|---|
| pH-neutral stone or floor cleaner | Yes, first choice | The Natural Stone Institute and Bona both recommend neutral cleaners |
| Mild liquid dishwashing detergent | Yes, in warm water | On the Natural Stone Institute's list; excess concentration can leave a film and streaks |
| Vinegar, lemon, citrus, other acids | No | The Natural Stone Institute says they may dull or etch calcareous stone; Bona says to avoid vinegar and citrus |
| Ammonia as a routine cleaner | Avoid | Bona says to avoid it; the Natural Stone Institute says frequent or over-use of an ammonia solution may eventually dull some stone types |
| Scouring powders and creams | No | The Natural Stone Institute says they often contain abrasives that may scratch some stones |
| Rust removers and toilet bowl cleaners | No | The Natural Stone Institute says many contain trace hydrofluoric acid, which attacks all stones |
Where the stone supplier or installer names a maintenance product, follow that. Never mix ammonia and bleach, which the Natural Stone Institute warns creates a toxic and lethal gas.
What Damages Marble Floors?
Acids, abrasives, grit and excess water cause most marble problems. Acids etch the finish, abrasives and grit scratch it, and water can seep into the porous stone.
- Acids. Bona says marble reacts to acids and the result, etching, dulls the surface. Acidic spills such as vinegar, orange or lemon juice and tomato sauce should be cleaned immediately.
- Grit. The Natural Stone Institute says sand, dirt and grit are abrasive, and recommends mats inside and outside an entrance with a slip-resistant underside.
- Abrasive tools. Bona says scrubbing brushes and scouring pads should be avoided to prevent scratches.
- Worn vacuum parts. The Natural Stone Institute says metal or plastic attachments and wheels that are worn can scratch the surface of some stones.
- Too much water or cleaner. The Tile Shop says excess water can penetrate marble, and the Natural Stone Institute says excess cleaner can leave a film.
How Do You Remove Stains and Scratches From Marble?
Identify the stain first, because the Natural Stone Institute says that is the key to removing it. Surface stains can often be removed with an appropriate cleaning product, and deep stains, etching and nicks need a stone professional.
| Mark | Natural Stone Institute guidance |
|---|---|
| Oil-based (grease, cooking oil, tar, cosmetics) | Clean gently with a soft liquid cleanser, such as household detergent, mineral spirits or acetone |
| Organic (coffee, tea, wine, fruit) | Indoors, clean with 12% hydrogen peroxide and a few drops of ammonia |
| Metal (rust, copper) | Needs a poultice; deep rust stains are extremely difficult and may be permanent |
| Etch marks (acid left on the stone) | Contact your stone dealer or a professional restorer to refinish or repolish |
| Slight scratches | May be buffed with dry 0000 steel wool; deeper scratches and nicks should be repaired by a professional |
Those treatments are the Institute's general natural-stone guidance, and some conflict with the routine-cleaner advice above. Test hidden spots, ask your stone supplier before using solvents, peroxide or steel wool on a polished floor, and use ventilation and gloves.
Does Marble Need Sealing?
Sealing helps with stains but does not make marble stain-proof. The Natural Stone Institute says sealers used in the stone industry act as repellents, making stone more stain resistant rather than stain proof.
It also notes that many stones do not require sealing and that frequency depends on the sealer, so consult your supplier. Bona's homeowner guidance suggests a sealer every 3 to 6 months. For a commercial floor, set the schedule with the stone supplier and the sealer maker.
Which Machines Work on Marble Floors?
An auto scrubber suits large marble floors, a hand-held scrubber suits restrooms and tight corners, and a floor machine suits mid-size rooms. Because water and cleaner absorption are the risk, a machine that recovers its solution in the same pass can help keep the floor from staying wet.
| Floor size or task | Machine | Notes |
|---|---|---|
| Restrooms, tight corners, spot work | Dapper Supply DP-HFS1240 | 17 in brush and 17.5 in squeegee, so it scrubs and recovers in confined spaces |
| Small lobbies, entryways, banks | Dapper Supply DP-WPFS1204 | 15 in brush and 17 in squeegee |
| Larger halls and concourses | Dapper Supply DP-WBFS1218 | 20 in brush and 31.5 in squeegee. How to size a commercial floor scrubber |
| Mid-size rooms | Floor machine such as the Mercury Cleanmaster TS-19 | 19 in apron, dual-speed 175/300 RPM. Pair with a wet vacuum for pickup. See how to use a floor buffer. |
The sources above address mopping, not machine scrubbing. Bona warns against scrubbing brushes and scouring pads on marble, so before running a scrubber or rotary machine on polished marble, ask the stone supplier which brush or pad is acceptable and test a hidden area first. Pads are in floor pads and drivers, brushes in machine brushes, and pickup tools in commercial vacuums. For the full operating routine, see how to use a floor scrubber.
Are Marble Floors Slippery When Wet?
Any floor can be, especially with water or a cleaner film on the surface. The Natural Stone Institute says excess cleaner can leave a film and cause streaks, so use the label rate, rinse and dry. OSHA requires workroom floors to be kept clean and, to the extent feasible, dry (29 CFR 1910.22(a)(2)).
The National Floor Safety Institute publishes wet-traction resources (NFSI). If a clean floor still feels slick, ask the stone supplier or a floor-safety specialist about traction testing.
Frequently Asked Questions
What is the best way to clean marble floors?
Dust-mop, wash with a pH-neutral cleaner in warm water, rinse with clean water and dry the floor. Avoid acids, abrasive tools and excess water.
Can you use vinegar on marble floors?
No. The Natural Stone Institute says products containing lemon, vinegar or other acids may dull or etch calcareous stones, and Bona says to avoid vinegar, ammonia and citrus.
Can you use dish soap on marble floors?
The Natural Stone Institute lists a mild liquid dishwashing detergent and warm water among acceptable stone cleaners, alongside a neutral cleaner or stone soap. Use a small amount and rinse, because too much leaves a film and streaks.
Can you steam clean marble floors?
Neither the Natural Stone Institute nor Bona recommends steam in the sources used here, and Bona notes that porous marble absorbs liquids. Ask the stone supplier before using steam.
Can you use a floor scrubber on marble?
The sources used here address mopping, not machines. Bona warns against scrubbing brushes and scouring pads on marble, so confirm an acceptable brush or pad with the stone supplier and test a hidden area first.
Related Guides
- How to Clean Slate Floors
- How to Clean Terrazzo Floors: A Commercial Guide to Routine, Cleaners and Machines
- How to Clean Polished Concrete Floors
- How to Use a Floor Scrubber: Step-by-Step Auto Scrubber Guide
- Best Commercial Floor Scrubber: How to Pick One for Your Facility