I have a travertine stone sink, which has small pits in the side wall and base near the plug hole. We are finding that although regularly cleaned mould can form in these pits. Is there a way of coating the sink with a thin layer of clear resin that will fill in these pits and stop the mould from forming.I am completely new to this industry and process and so would be very grateful for any help, product suggestions etc.
Thanks in advance.