Robbb

Not if it's sealed properly.

Right on. Maybe i'll store the current sink in my attic just in case I need to put it back. Thanks EMME, how soon are you looking put in new countertops?

I'm thinking about making a concrete sink/vanity for the guest bath...obviously I can do whatever I want since it's my home and all, but, is there anything I might want to consider for when I sell my home (which I won't be doing anytime soon)? In other words, are there certain codes, etc. that I should follow when building the sink? Is this something that might normally come up during a home inspection? Does it HAVE to have an overflow or a specific type of drain? I know i've seen sinks @ hardware stores that don't have overflows, but most of those are vessel sinks. Thanks!