Choosing the correct sealer is often a personal choice based on a combination of appearance and functionality. In most cases only a few options are available for each type of floor or tile type based on the surface porosity. In the case of polished marble only a repellent like STONESHIELD MARBLE & GRANITE SEALER can be used as all resin based sealers will leave a surface layer affecting the marbles appearance. Consult the sealer selection chart for the correct options.