NTC

The National Training Center for Stone & Masonry Trades

Stain Removal Guide

STUNS

Type:

Stun marks caused by heavy objects dropped on a marble floor, also high heel marks

Problem:

Stun marks are very common on some marbles. Those caused by high heels walking across the floor, leave a white spot on the marble. Stun marks can telegraph to the bottom of the stone. Individual crystals in the stone exploding cause them.

Solution:

Try grinding, re-honing and polishing the floor. This may eliminate some light stuns, but, chances are, they cannot be removed.