We bought a kit from Grout Shield,
Grout Shield | Grout Restoration System | Grout Cleaner, gave them the name of our grout (from home warranty),and they shipped a cleaning kit, and a COLORED sealer that exactly matched the grout. I did the entire house, and we now have fully sealed grout the exact same color as original. Has been in the shower for over a year, looks great.
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Pennsylvania, for 60+ years, most recently, Allentown, now TV.
