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Is a sink required to have a drain stopper?
Tuesday, April 30, 2019
In the jargon of the building codes a sink is a “lavatory,” and the drain is a “waste outlet.” With that out of the way, we can investigate what the codes say about drain stoppers:
The Residential Edition of The Florida Building Code (FBC P2711.3) and the International Residential Code (IRC) specify that a lavatory waste outlet must have a “strainer, pop-up stopper, crossbar or other device” to restrict the opening of the drain. Their purpose is to keep an object that is the same diameter as the drain pipe from going down the drain and instantly clogging it.
A pop-up stopper, which lets you seal-off the drain when you want, is one of the options offered, but any other device that just “restricts the clear opening” is acceptable. So the strainer shown above, that will keep your diamond ring from disappearing down the drain but not allow you to fill the sink, complies with the code.
Also, see our blog post Can a laundry sink drain be installed without a trap under it?
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