TOP-CAST® top surface retarder
Expose aggregates the smart way.
Functional and decorative concrete surfaces.
With TOP-CAST®, it's possible to achieve an architectural finish with an exposed aggregate look. Our product is more than just a surface retarder—it's a surface retarder that's optimized for robust, consistent performance in all temperature and weather conditions. TOP-CAST® will create perfect, eye-catching flatwork that will satisfy both contractors and customers.
Sublime ease-of-use for poured-in-place concrete
Surface retarders work by preventing the topmost layer of poured-in-place flatwork from curing. Once the rest of the concrete has cured, contractors can simply wash off the top layer. This achieves a texture that's similar to the effect of sandblasting or acid washing concrete and even deeper exposure, but without any danger to workers or the environment. TOP-CAST® has characteristics that make it one of the most effective and easy-to-use surface retarders on the market.
Stands up to the elements
TOP-CAST® saves contractors on setup and installation time, and results in a more effective product. In addition, the surface retarder is designed to be extremely stable and robust, with the ability to resist temperatures of up to 150°F. Changes in weather, temperature, and humidity barely affect its efficacy.
Fire-and-forget technology
TOP-CAST® incorporates other innovations that make it extremely easy for contractors to work with. For example, TOP-CAST® is color coded so the appropriate etch depth is easy to identify by contractors. The product will retard to a certain depth, and then deactivate on its own, leaving contractors free to concentrate on other issues.
Nationwide availability
When contractors need TOP-CAST®, it's there for them. At local architectural supply stores, they'll find that TOP-CAST® has twelve different specified depths to produce effects ranging from a barely-there acid-washed sheen to a stony look that's 1 ¼ inch deep. Each variant is color-coded, making it easy to use the right depth and avoid mistakes. For information about TOP-CAST® and how to use it in your products, contact GCP today.
