Revisions log for Answer #427

This can also be countered by hydrophobic impregnation. The idea – simplistically – is that there is less water in the substrate because of the hydrophobicity, and therefore growth is at least hindered and delayed. This works well on facades, although, of course, individual characteristics must be taken into account. Here you can often observe a kind of self-cleaning.

For example, we waterproofed our wall so that water just rolls off of it. The resistance to freezing/thawing should also increase significantly. It works great on a clinker facade too :)

However, it can be problematic if the water stands on the substrate due to hydrophobicity and freezes in the winter.