Toto undermount sink issue - ring around outside of drain

Discussion in 'Plumbing Forum, Professional & DIY Advice' started by ktsamis, Jun 25, 2014.

  1. ktsamis

    ktsamis New Member

    Messages:
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    Location:
    ct
    Hi Everyone,

    I purchased a toto undermount sink that we had installed about a year ago. There is a ring around the outside of the drain that was not glazed for some reason. The surface was a bit rough but I figured it was toto, so they must have a reason for it. That area has now discolored and is just ugly. What is the purpose of this area being unglazed and how to I fix it?

    Thanks in advance!
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