STAINED CONCRETE:
Chemically reactive stains are water-based, acidic solutions that contain metallic salts. These metallic salts react chemically with calcium hydroxide compounds (hydrated lime) in hardened concrete. Such reactions form the insoluble colors that become a permanent fixture of the hardened concrete surface.
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Partially due to the irregularity in finishing patterns and partially due to the inherent variation of the concrete materials, stain chemicals react in a very irregular pattern, giving it a decorative effect. As a result, mix constituents and finishing techniques will greatly influence how effective the staining can be. Controlling these parameters is important for achieving the best effect from the stain.
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Stains can also be applied to old or new concrete, to colored or grey surfaces, and may be used in conjunction with other decorative techniques and creative joint patterns. Combining chemical stains with dyes presents an unlimited palette of colors to create floor patterns and designs.
To protect and enhance the color of the floor, using a sealer is an important step. However, just as material selection for the concrete is important, selection of the appropriate sealer is also important for the performance and durability of the floor.