Marble provides an elegant surrounding for any fireplace. This widely used natural stone requires gentle cleaning to maintain its beauty and shine. Marble is a soft stone vulnerable to etching and corrosion. Use only pH-balanced and nonabrasive cleaners to avoid damaging your marble hearth.
Vacuum any dust or soot from the marble hearth using a hose or soft brush attachment. This will prevent the particles from scratching the marble during wet cleaning.
Fill a bucket with 1 gallon of warm water and 1 to 2 tbsp of stone cleaner or mild dish soap. Dip a sponge in the bucket and wring it out. Wipe the marble hearth with the soapy sponge until it's clean.
Empty the bucket and refill it with clean water. Dip the sponge in the water, wring it out, and wipe away any soap residue.
Dry the marble hearth with a clean towel.
Do not use products that contain citrus, vinegar, or other acids on marble surfaces.