These are examples of grout that was contaminated during the mixing process of the installation. A darker grout from another job was probably left in the mixing bucket and became disbursed in the lighter grout. We see this on occasion. The only remedy(s) available is to cut out the old grout and replace it with the proper mixture, or apply a colorsealer.
Grout cleaning by Fabric & Tile Masters
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I am the owner and founder of Fabric & Tile Masters and have decades of experience with all of the categories I write about. We refinish stone walls, counter and floors every day.
Latest posts by Harry Edenfield (see all)
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