Basin Wastes & Plugs

Small but essential, your basin waste does more than you might think. From keeping water where you want it to preventing pesky leaks and blockages, it's a key part of how your bathroom sink works day to day. Whether you're upgrading your bathroom or fixing a faulty fitting, our guide below covers what you need to know.

 

What is a basin waste?

A basin waste controls how water flows out of your basin (or stays put when you need it to). Fitted neatly into the drain hole, it channels used water safely into the waste pipe, keeping everything clean and efficient.

When closed, the waste seals the plug hole so you can fill the basin for washing or shaving; when open, it allows water to drain smoothly away. By catching debris before it reaches the pipework, it also helps to prevent unwanted blockages and keeps your basin running as it should.

The way you open it depends on the type you choose. Click clack basin wastes open with a press, and some have removable caps that make cleaning easier. Flip top wastes swivel open and closed, which may appeal if you'd rather avoid a push button mechanism.

 

Are basin wastes a standard size?

Many basin wastes have a 1¼ inch connection, but that alone doesn't guarantee a replacement will fit. The waste also needs to reach your existing bottle trap, fit in the space beneath the basin and sit properly in the bowl. A deep plug or wide cap can be a poor fit for some curved basins, so check the product's dimensions as well as the connection size.

 

What is the difference between a slotted and unslotted waste?

The key difference comes down to whether your basin includes an overflow. A slotted basin waste features small openings that allow excess water from the overflow to drain away safely, helping to prevent spills and leaks. This makes it the correct choice for basins designed with an overflow hole.

An unslotted basin waste, on the other hand, is intended for basins without an overflow. It creates a sealed fit, allowing the bowl to fill and empty as required without any additional drainage channel.

 

Is it easy to change a basin waste?

Yes, replacing a basin waste is a straightforward task that most people can manage. However we always recommend speaking to a professional before undertaking any bathroom DIY projects.

The process involves disconnecting the old waste, cleaning away any leftover sealant and fitting the new one securely with the right washers and seals in place. Once tightened and connected to the trap, you'll have a clean, fully functional basin ready to use again. For step-by-step instructions, read our guide on how to fit a basin waste or watch the video below: