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You can whiten concrete for unsealed and unfinished concrete with a solution or either muriatic acid or bleach and water—but never both. However, if your concrete does have a stain, finish, or polish, keep in mind that these hard chemicals could damage the topcoat. Your best bet otherwise is to power wash outdoor concrete slabs or clean indoor ones with a gentle cleaner such as laundry or dish detergent.

The cost for concrete coating services ranges from $3 to $15 per square foot. The final price is contingent on several factors, including the extent of surface preparation needed, the type of coating used, the total area being covered, and labor.

Sealing resurfaced concrete is not an absolute necessity. However, it is recommended, and in most cases, a high-quality concrete sealer can protect the surface from stains as well as water penetration, extending the life of the resurfacing material. Some sealers are formulated to protect pigments from fading due to UV exposure. Sealer tends to enhance the colors in decorative resurfacing applications, making them more vibrant and richer compared to the duller, more faded appearance of concrete colors without sealer.

The life span of a painted concrete driveway can vary based on several factors. When properly prepared, primed, and painted with high-quality concrete paint, a well-maintained driveway can last 5 to 10 years or more. Other factors like climate conditions, traffic volume, and lack of maintenance also impact life span. Regular cleaning, resealing, and touch-ups can extend the longevity of a painted concrete driveway, ensuring it remains both functional and aesthetically pleasing.