Concrete is able to absorb and give off water. This quality can cause a number of cosmetic problems.
We often visit residents of flats. A common request amongst these people is for protection of the concrete against weather and contamination by the users themselves. Cosmetic problems include limescale development, pyrite oxidation, moss and algae growth, food or drink stains etc.
Compañero recommends using Colorfresh® in order to protect the concrete against contamination. Use of this product also makes the concrete easier to clean.
See the attached PDF
for more information about Colorfresh®.