Sand and grit carried from outside by shoes can easily scratch and abrade the marble surface like a sandpaper. Unprotected furniture legs may leave scratches too. Dragging heavy objects or sharp items on the floor can cause verydeep scratches or gouges that may be permanent.
Marble is porous and can easily be discolored by spills from food, sitting pots, metal furniture legs, oil, ink, water damage, etc.
Spills from drinking liquids or food containing acid will etch (dull mark) marble surfaces. For example: lemon juice, orange juice, carbonated beverages, cranberry juice, apple juice, wine, tomato, etc. The dull mark may have a coin size or spread over several tiles.
Another source for etch marks are cleaning products containing acid. For example: Tile cleaners, vinegar, Ajax, Soft Scrub, etc.
In addition to chemicals containing acid, chemicals that contain high alkaline or bleach can damage marble floors to loose its shine and elegance.
Local water may contain chlorine, salts, magnesium, potassium and other minerals. When water is used continuously to clean the marble floor it may ruin certain types of marble by causing pitting, spalling and yellowing. This is why it is important to protect the floor with a premium sealer.
Improper Maintenance Procedures
Continuous use of water as the sole cleaning agent (without chemicals), or using dirty mops, or not changing the cleaning solution frequently enough, can cause the marble to look dingy, streaky and unattractive.
Improper Maintenance Program
Not having a steady use of dust mop and damp mop may cause a decrease of the shine. In addition, a yearly maintenance may be required to renew the shine especially when the floor is exposed to a medium or heavy traffic.