There are a lot of decisions that go into specifying a sink. Size, shape, material, mounting style—and then there’s one little detail that’s surprisingly easy to overlook: the overflow.
You’ve seen it before. It’s that small opening near the top of the basin. Some sinks have one. Some don’t. And while it might seem like a minor detail, choosing between an overflow and no-overflow sink can make a difference in how the sink functions, how it’s maintained, and where it makes the most sense.
So, which one belongs in your project? Let’s break it down.
A sink overflow is an opening positioned near the upper portion of the basin. Its purpose is pretty much right there in the name: if the water level gets too high, the overflow provides an additional path for water to reach the drain. It’s a familiar feature in bathroom sinks, particularly in residential, hospitality, and other everyday-use spaces.
But familiar doesn’t necessarily mean necessary for every application.
Not really—and that’s kind of the point.
The better question is: Which one makes sense for this project?
A sink with an overflow may be the right choice when added protection against rising water is a priority. A no-overflow design may make more sense when simplifying cleaning, reducing openings, or meeting the needs of a hygiene-conscious environment takes precedence.
Here’s the quick version:
| With Overflow | No Overflow | |
| Provides an alternate path for rising water | ✓ | — |
| Fewer openings in the basin | — | ✓ |
| Simplifies basin cleaning | — | ✓ |
| Worth considering for hygiene-focused applications | — | ✓ |
| Available within Durasein’s sink collection | ✓ | ✓ |
And, as always, project-specific plumbing requirements and applicable codes should be checked before specifying either option.
You shouldn’t have to choose a sink based solely on whether it has an overflow.
That’s why several designs in the Durasein sink collection are available in both configurations. The Ansel, for example, is offered as the DLB401A with an integral overflow and the DLB402 without one. Both give you the solid surface benefits Durasein sinks are built around, including 100% acrylic construction, a non-porous surface, stain resistance, and easy cleaning.
And if one of the standard options isn’t quite what your project needs? Durasein also offers in-house custom sink design and production through D.Lab.
Because sometimes the answer isn’t choosing between Option A and Option B.
Sometimes it’s making Option C.
Ready to find the right fit?
