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DTA is suitable for external use on ceramic, mosaic and quarry and terrazzo tiles, but not suitable for porcelain tiles. It produces little to no change in appearance to glazed tiles.
The product can be used around bathrooms, patios, pools and steps.
Re-application rates are determined by how much wear and tear from foot traffic the area receives. If the area is used often, you might need to re-apply every few years. - MitchellMc
