Very good stock. It indeed has excellent adhesion (I have tested it on wood and masonry) and prevents future micro-cracks. On the downside, it doesn't sand as easily as the packaging claims, but when it finally sands after many (thousand?) meters of sandpaper, it provides a very smooth surface. Additionally, it is mainly for indoor use because in outdoor environments, the air and sun dry the surface very quickly, causing it to form crusts and not spread well. Also, during sanding, it produces minimal to no dust (which is logical since it doesn't sand even with coarse sandpaper) and doesn't necessarily require a special dusting brush.

Easy to work with. When it dries, it becomes like putty but can be painted normally. It dries well in large gaps but it may sag and create a hollow if there is no supporting material (mesh). However, it can also be applied a second coat once it is dry.

The color is slightly gray when it dries, so on a completely white wall it is visible and needs painting. The color seems to adhere perfectly.