Identifying Epoxy from Concrete Based Terrazzo

Frederick M. Hueston  StoneForensics.com

Distinguishing between epoxy and concrete-based terrazzo can be challenging, especially if you are not familiar with the materials. However, there are a few key differences that can help you tell them apart:

Surface appearance: Epoxy terrazzo often has a more uniform and smooth surface compared to concrete-based terrazzo. The epoxy resin used in the former gives it a glossy finish, while concrete-based terrazzo may have a slightly rougher and more textured surface.

Color and design: Epoxy terrazzo allows for a wider range of colors and intricate designs due to its ability to hold pigments and patterns more effectively. Concrete-based terrazzo, on the other hand, typically has a more limited color palette and may have a simpler design.

Thickness: Epoxy terrazzo is usually thinner than concrete-based terrazzo. Epoxy terrazzo typically ranges from 1/4 to 3/8 inches (6 to 10 mm) thick, while concrete-based terrazzo is often thicker, ranging from 1/2 to 3/4 inches (13 to 20 mm) or more.

Installation process: Epoxy terrazzo is usually poured in place as a self-leveling material, while concrete-based terrazzo is typically a more labor-intensive process involving a mix of cement and aggregate poured into forms.

Durability: Both epoxy and concrete-based terrazzo are durable, but epoxy terrazzo is generally more resistant to staining, chemicals, and wear and tear due to its non-porous nature. Concrete-based terrazzo may require more maintenance over time to retain its appearance.

Sound: When you walk on epoxy terrazzo, it tends to produce a softer and quieter sound compared to concrete-based terrazzo, which may sound slightly more resonant.

If you still have trouble differentiating between the two, it is best to consult with a professional contractor or a terrazzo expert who can examine the material closely and provide an accurate identification.