Different Types of Concrete Coatings

Several different types of concrete coatings are available to protect a surface from contamination and weakening. Penetrating sealers provide an invisible layer of protection against temperature extremes and harsh chemicals. Acrylic sealers produce a thin film that protects the concrete apparent. Polyurethane concrete coatings are usually thicker and more long-lasting than ordinary sealers. Epoxy coatings are scratch-resistant and provide a colourful appearance. A concrete overlay may also be applied to restore a smooth finish to a surface.

Penetrating sealers are usually applied as an exterior concrete coating. This coating penetrates the surface to create a barrier against moisture chemicals. These sealers are transparent when applied and do not alter the natural appearance of the material. They also provide protection from freezing temperatures and sunlight. A penetrating sealer is easily applied and is one of the least expensive coatings for concrete.

 An acrylic sealer works at the surface to protect the material from damage. Acrylic concrete coatings can be applied to both interior and exterior surfaces and are available in an oil or water base. This sealer variant dries quickly and can be purchased in finishes ranging from glossy to matte. Acrylic sealers used on interior surfaces typically require frequent maintenance, however. This type of coating is relatively inexpensive and easy to apply.