Bathtub Overflow Drain: What It Is and Why It Might Fail
The bathtub overflow drain is one of those features that most homeowners don't think about until it stops working properly. Located just below the rim of the tub, this small but essential component plays a vital role in preventing water from overflowing when the tub is too full. It works by redirecting excess water into the drain system, reducing the risk of water damage to the bathroom floor, screed, and surrounding areas. However, like all plumbing components, the overflow drain can fail over time. One common problem is a faulty gasket, the rubber seal that sits behind the overflow drain plate. This gasket is responsible for creating a watertight barrier between the tub and the plumbing. If it dries out, cracks, or becomes misaligned, water can seep behind the tub wall, causing hidden leaks and expensive water damage that can go unnoticed for months. Another common problem is a loose or corroded overflow plate. Over time, the screws holding the plate in place can loosen or the m...