Our research group has recently designed several products for preserving Cultural Heritage stones with significantly improved performances compared to the commercial products currently in the market. Specifically, some drawbacks of commercial products, such as cracking and poor adhesion to the substrate, have been prevented. Our products are produced by a low- and environmentally friendly cost process; and, of especial relevance, they meet the operational and commercial requirements for application to exterior surfaces of large buildings and structures. The process is so simple that the coatings are produced on the exposed surfaces requiring treatment, under outdoor conditions, using very common deposition methods, such as brushing or spraying. In addition, innovative materials such as superhydrophobic or self-cleaning products, which have been hardly tested on art stoneworks or other Cultural Heritage materials, have been developed.