Nanolia's Stone Guard is a "breathing" impregnation that protects practically all types of porous or absorbent mineral-based materials. Penetrating deep below the surface, this amazing water-based impregnation protects surfaces with an almost invisible coating that lets the material breathe while preventing the ingress and adhesion of dust, dirt and other contaminants.
protects practically all types of porous or absorbent mineral-based materials such as brick, tiles, concrete and paving against water, oil dust and dirt
"Breathing characteristic: Allow moisture - water as vapour - to pass through due to tiny gaps between nano-particles." (see Related Information field)
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