These white streaks may be hard-water deposits, which can prove very difficult to remove. Suggest that they try a sulfamic acid-based tile-and-grout cleaner.
CAUTION Make sure to let them know to NOT use sulfamic acid or any acids on marble. Acid will etch the marble and repolishing will be necessary.
Article ID: 1050
Created: February 4, 2026
Last Updated: February 4, 2026
Author: Admin
Online URL: https://surfacecarepros.com/kb/article/my-customer-s-granite-tile-floor-has-developed-several-white-streaks-they-ve-tried-several-things-but-they-don-t-seem-to-go-away-what-can-i-suggest-they-use-to-clean-them-off-1050.html