Nanonext Nano Wood & Stone Sealant is an aqueous inorganic-organic coating material that uses nanotechnology. Anti-adhesion components provide an invisible water resistant and oil resistant film on surfaces. 

can be used on absorbent and porous surfaces

Listed under the product category of 'nanostructured sealants'. "With Nanonext Nano Wood & Stone Sealant there is not much you have to do. This chemical nanotechnology wonder sealant gives the wall surface a new hidden layer with hydrophobic and oleophobic properties. So no water, no dust, no rain, no lime, no nothing." (see product link)

available online with username and password

Nanonext NanoStructured Sealants or Surface Coatings