Concrete sealers are coatings applied to concrete surfaces to protect them from damage caused by water, chemicals, and other substances. They work by forming a protective barrier on the surface of the concrete that repels water and prevents the penetration of other substances.

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Concrete sealers come in two main categories: film-forming sealers and penetrating sealers. Film-forming sealers are typically acrylic or epoxy-based and create a protective film on the surface of the concrete. This film can be clear or tinted and can provide a glossy or matte finish. Penetrating sealers, on the other hand, are designed to penetrate the pores of the concrete and chemically react with it to create a water-resistant barrier. They do not change the appearance of the concrete surface.

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Concrete sealers are commonly used on concrete driveways, patios, sidewalks, and other outdoor concrete surfaces, as well as indoor concrete floors in commercial and industrial settings. They can help to prevent damage caused by freeze-thaw cycles, UV rays, abrasion, and chemical exposure.

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In addition to protecting concrete surfaces, sealers can also enhance their appearance by creating a glossy or matte finish, enhancing the color and texture of the concrete, and providing a slip-resistant surface.

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The type of concrete sealer chosen depends on the specific application and the desired outcome. It is important to properly prepare the concrete surface before applying the sealer to ensure optimal adhesion and performance.