Why Grout Cleaning Before Sealing Matters for Homeowners

https://veloriftlabs.com/s/8uVI0yrq8Q128Oqdg_bOQ

Dirty grout traps moisture and stains, which sealer can lock in permanently instead of protecting the tile. Cleaning first removes that embedded grime and opens the porous surface so the sealer actually bonds and lasts. You end up with a finish that resists mold and discoloration, not a mess sealed under a shiny layer.