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The cost to seal concrete is around $1,500 on average, but you could spend anywhere from $1,000 to $7,000, depending on the type of sealer used and the size of the space. You may want to seal concrete that receives a large amount of foot traffic or heavy wear. While you can seal concrete yourself with materials from a home improvement store, you must ensure the surface is clean and ready to accept the sealer. Hiring a professional is often recommended to ensure good, even coverage that provides adequate protection.

Yes, you can seal old or existing concrete, but proper preparation is crucial. The concrete surface must be clean, dry, and free of any incompatible old sealant. To check if an old sealer is present, drip a few drops of water onto the surface; if the water is absorbed in under five minutes, it's ready to be resealed. If you plan to use the same type of sealer that was previously applied, you may not need to remove the old layer. However, if you are using a different type of sealer, the old one must be completely removed. Before applying the new sealer, thoroughly clean the concrete and repair or fill any cracks to ensure a smooth, well-prepared surface.

Commonly used in garages, epoxy is a synthetic resin coating that goes over the top of concrete surfaces. If you’re deciding between polished concrete and epoxy flooring, the best choice depends on your needs and personal preference. Epoxy is durable and highly customizable, while polished concrete tends to require less maintenance. They’re both long-lasting with similar price points, and professional installation is recommended for each.    

To keep your stamped concrete surfaces shiny, experts recommend resealing them every two or three years. Regularly cleaning your stamped concrete (at least twice per year, as part of routine maintenance) is another way to increase its sheen. Also, if you notice any spills or leaks, you should clean your stamped concrete as soon as possible to preserve its shine and prevent long-term damage.