Hi AT, My kitchen designer says that it is just fine to use butcher block countertop with an undermounted kitchen sink (I have also noted this combination in a number of design books and magazines). But the carpenter who is doing the installation says that I should tile around the sink, as the butcher block could either rot, discolor, or come apart completely. Does anyone have any experience either way? Thanks, Uriah Can anyone speak from experience and help out Uriah??