The purpose of using a penetrating sealer is to allow the substrate to be stain free and to remain looking as new as possible through correct maintenance procedures; they can also assist in reducing freeze thaw issues and salt damage. To achieve this we believe that it is important that the sealer is working at its highest level possible. 

The life span of the sealer can be greatly altered based on a number of variables such as;

Natural stone is porous, which means it has interconnected capillaries through which liquids and gases can move. In fact, porous materials act like a hard sponge and actually suck in liquids over time, along with any dissolved salts and other minerals or contaminants (stains). More porous stone, such as sandstone will absorb liquids relatively quickly, while denser volcanic stones such as basalt are significantly less porous and may take longer to absorb oils and water-based liquids. Natural stone should be protected against sub-surface staining, everyday dirt and spills; this can be done by sealing the stone in 1 of 2 ways, a penetrating or topical sealer.