Q: Dear Ed: We want to install glass under-mount sinks for our new bathroom. While searching for information, the term “opaque glass” keeps popping up. What is opaque glass and why would you choose it over other types of glass sinks?

— Bill, Utah

A: Glass sinks are in a category all by themselves. Like any plumbing fixture category, there’s a wide range of colors, shapes and styles to choose from.

Glass also has three basic transparency factors you need to consider. Here’s some information on all three types.

1. Ice glass. This is clear glass, widely used for vessel sinks.

2. Translucent glass. This type of glass is great for backlighting the sink since it’s a semi-transparent glass.

3. Opaque glass. This is glass painted or blocked out on the underside of the sink.

Bottom line: If you want an under-mount glass sink with a solid color, don’t pass on opaque glass.


Master Contractor/Plumber Ed Del Grande is known internationally as the author of the book “Ed Del Grande’s House Call,” the host of TV and Internet shows, and a LEED green associate. Visit or write


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