How to install expensive white marble, e.g. Statuario, Thossos……..

One must use MYK Laticrete L-111 + L-73 for floors & L-111 + L-4237 for walls. If the budget is stringent, at least use L-190 sealer on all 6 surfaces (top, bottom and 4 edges) and lay with White L-252. After polishing use MaxiSeal or MaxiSeal Plus.