If you intend to grind the travertine flat I would grind and hone to about a 120 grit. Apply the filler after the 120 grit. There are several fillers that will work. There are products that are called traverfills or you can use a non-sanded grout. Either one of these materials will work. Be sure to overfill the holes since the filling material may shrink. Allow the filler too dry at least twenty four hours and then hone with the next grit. You may find that some fillers will pop out at this stage . If there are few holes I would fill them later after polishing. If there are numerous holes that pop out you will need to refill again.
Article ID: 423
Created: January 19, 2022
Last Updated: January 20, 2022
Author: Pam Freitag
Online URL: https://sr-manual.com/kb/article/i-am-about-ready-to-grind-hone-and-polish-a-travertine-floor-i-realize-i-will-need-to-fill-the-travertine-at-what-grit-should-i-fill-and-with-what-type-of-filler-should-i-use-423.html