I posted previously about 18 months ago re the cracks in my Travertine floor. Since that date many of the tiles have additionally developed holes. I have attached pictures of the state of the floor and am looking for advice as to a remedy so that the floor doesn't look like such an eyesore(the holes make it look as if it is dirty). There is water generated under floor heating. Is it worth/possible to have the holes filled? I presume if the floor w
as to be replaced it would be quite expensive to have these tiles removed and is it likely to damage the heating?