How do I clean zero grout lines on travertine tile floor?

Q. I have a large space covered in dull travertine tile which i am planning to polish and seal. There is a zero grout which has become very dark. how can i clean the grout without damaging tile?

A. There are several alkaline grout cleaners that should do the job. Avoid any acid based cleaners since they will etch the travertine. Since you will be having the tile professionally polished, I would discuss the grout with the contractor and make sure they are aware that you want to grout cleaned also. If you would like to contact a professional contractor in your area, contact us.

Fred Hueston
Chief Technical Director, SurpHaces
President, Stone Forensics

Article ID: 1398
Created: February 5, 2026
Last Updated: February 5, 2026
Author: Admin

Online URL: https://surfacecarepros.com/kb/article/how-do-i-clean-zero-grout-lines-on-travertine-tile-floor-1398.html