14/10/2026
From aggregate to finished surface 🎯
A smooth finish, a subtle micro-texture or a more pronounced exposed aggregate look can completely change the appearance of a concrete element.
With surface retarders and wash-out gels from RECKLI, a wide range of surface finishes and wash-out depths can be achieved. By removing the upper cement paste, aggregates such as granite, marble, basalt or gravel become visible and define the colour, texture and feel of the finished surface.
Depending on the application and the desired result, different processes can be used:
🔹 RECKLI CR Type N is applied to the formwork before concreting and is suitable for the negative process.
🔹 RECKLI CR Type PV is sprayed directly onto the fresh concrete surface for the positive process.
🔹 RECKLI CemGel creates a fine micro-exposure of the surface, resulting in a slightly roughened, natural stone-like appearance.
Discover RECKLI’s solutions for individual concrete surface design: https://www.reckli.com/products/surface-retarder/