Graffiti Guard for Porous Surfaces is a permanent, high-performance water-based protection for absorbent mineral surfaces. Free from organic solvents, it creates an invisible hydrophobic, oleophobic, breathable and weather-stable surface that also impedes the growth of algae, lichens and mosses.
absorbent mineral surfaces such as concrete, masonry and natural stone
"Breathing characteristic: Allow moisture - water as vapour - to pass through due to tiny gaps between nano-particles." (see Related Information field)
unable to locate SDS online