Refine and Protect: Why KEIM Concrete Stain is the Ultimate Concrete Solution

Concrete substrates often exhibit unwanted color variations, shading differences, and blemishes resulting from the construction process. Traditional coatings can simply cover the concrete, resulting in an unnatural, “painted” look that masks the original texture.

KEIM Concretal Lasur, a pigmented, sol-silicate-based stain, works differently. Instead of forming a plastic-like film on the surface, it:

• Penetrates and Chemically Bonds: The silicate binder reacts with the concrete in a process called silicification (or petrification), forming an incredibly durable, permanent bond with the substrate on a molecular level. It essentially “turns to stone” with the concrete itself, eliminating the risk of peeling or flaking.
• Equalizes Color and Blemishes: The low-pigment stain acts as a subtle veil to equalize unacceptable variations in color and shading, and to conceal unsightly repairs. Because it is translucent (or semi-transparent), it harmonizes the surface’s appearance without completely covering the original material’s texture and structure. This provides a unified, consistent quality appearance while retaining the original, mineral matt concrete aesthetic.
• Retains Texture: The thin-layer coating is non-film-forming, ensuring that the surface texture, such as board-formed marks, is fully retained and never “filled-in.” The finished surface still looks and feels like raw concrete, that has been “dyed”.