Comparing Coating Types

The term "coating" is often used broadly to refer to just about any liquid or semi-solid material applied to cured concrete, including cement-based toppings and overlays, paints, and epoxy-aggregate systems. However, for the purposes of this guide, we're narrowing down the definition to refer only to noncementitious polymer products typically applied at thicknesses of less than 1/16 inch. (Click on these links for tips on buying and using cement-based toppings and overlays and epoxy-aggregate systems.)

100% solids epoxy coating with a urethane top coat.

Innovative Concrete Surfaces, Inc in Bonita Springs, FL

Without getting too scientific, a polymer is basically a chemical compound or mixture of compounds. The most commonly used concrete coatings today fall under or are hybrids of four basic polymer categories: epoxies, urethanes, acrylics and polyureas. Because of the chemical nature of polymer coatings, manufacturers will often tinker with the properties and molecular makeup of their products to improve their performance and provide other benefits, such as faster curing times or lower VOCs.

When comparing the attributes of various products, the first step is to look at the coating manufacturers' data sheets and technical specifications. They are your best sources for performance and installation information. Many of these spec sheets are available from the manufacturers' websites. You will also need to evaluate the surface you're working with and make some important decisions regarding protection requirements, aesthetic goals, budget and the time frame for installation. For more guidance, read Robert Cain's article Selecting the Proper Coating for Concrete Floors.

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