The technical and mechanical features of our stones are guaranteed and so they will not be affected by external environmental elements such as smog, frost, acid rain or salt. Santafiora's products can therefore be used in any kind of climate. Since it is not susceptible to frost due to its strong tensile strength, Santafiora is particularly suitable for large externally insulated walls which are exposed to sea salt or placed within earthquake belts. The anti-skid properties and its non susceptibility to frost (certified by major European laboratories) make this stone particularly suitable for squares, historical towns and facings of large areas of externally insulated walls. Santafiora guarantees resistance to dark oxidation (commonly caused by smog).