Dear Maha:
If you look closely, you will notice that there are no grout lines in that floor. Back in those days the only way to install marble floors was with the “grind-in-place” method, and no marble floor was ever polished back then. They were all finished with a hone-finish (smooth and scratch-free but no sheen). And that is how marble earned its reputation of maintenance-easy flooring material. (BTW, the marble that you have is White Carrara.)
Under the circumstances, on account of the fact that the root of a tree damaged the floor, your only option is to hire a stone restoration contracting company. They will repair the damage, grind that area flush with the rest and then re-hone the entire floor with a good-quality honing powder to give you back that unique original “old country” marble floor.
After that, all you will need to care for it is a good-quality stone floor detergent (not a soap!) like MB-1.
May I ask you now to please read and e-sign our Statement of Purpose at:
http://www.marblecleaning.org/purpose.htm?
Ciao and good luck,
Maurizio Bertoli
www.marblecleaning.org – The
Only Consumers' Portal to the Stone Industry Establishment!
Article ID: 772
Created On: Mon, Nov 12, 2007 at 7:39 AM
Last Updated On: Mon, Nov 12, 2007 at 12:00 AM
Authored by: Maurizio Bertoli [mail@mbstone.com]
Online URL: https://marblecleaning.org/knowledgebase/article.php?id=772