Leaking bathroom sink
Shortly after installing a new American Standard pedestal sink in our ensuite, water staining appeared on the wall. The plumber pulled the sink out from the wall and we discovered the back of the sink was dripping wet. There appeared to be no cracks and no problems with the plumbing. He felt we were sloppy with the water and that it was leaking down the back of the sink. I know my husband and I are extremely careful with the water, wiping the sink after every use. He added a bead of silicone caulking. It has started staining again and we can feel the water on the back of the sink. He has removed it again, but we still don't know where the water is coming from. Any ideas?