Sink Wastes

Learn more about sink wastes

Selecting the correct sink waste configuration is essential for maintaining watertight performance, compliance with building standards, and efficient drainage. Waste units serve as the primary seal connecting the sink to the trap and waste pipework. Matching the internal overflow profile—slotted for basins with internal overflow channels or unslotted for plain bowls—prevents unseen water pooling beneath counter tops and protects surrounding cabinetry from costly water damage. 

Typical uses

• Kitchen installations: Fitting high-capacity basket strainers to single and multi-bowl sinks to collect food waste and allow easy debris disposal.

• Bathroom basin fitting: Installing sleek click-clack, pop-up, or classic plug-and-chain wastes on vanity units and wall-hung basins.

• Utility & commercial areas: Setting up heavy-duty brass strainer wastes to handle intense water flow and chemical cleaning solutions.

• Appliance integration: Connecting combined waste and overflow kits that accommodate dishwasher and washing machine bypass nozzles.

How to choose the right sink waste

• Match the sink outlet size to the waste outlet specification. That is the quickest way to rule parts in or out.

• Check the overflow arrangement. If the sink has an overflow hole, choose a sink waste kit made for that type of sink. If it does not, choose a waste that suits a non overflow sink.

• Check the space under the sink. Measure the area and compare it with the trap depth and shape shown in the product specifications. This helps avoid clashes with cupboards, service runs or the existing pipework route.

• Check the connector and thread details. Match the connector to the pipework already in place. Check the listed dimensions, thread type, inlet and outlet sizes, and any stated compatibility with the trap or extension. If the existing layout is non standard, compare the full assembly before you order.

Before you order

• Measure the outlet diameter.

• Check whether the sink has an overflow hole.

• Measure the available space under the sink.

• Confirm the pipework route and connector type.

• Compare the part against the product specifications.

• If you're not sure, speak to your local branch for advice before you buy.

Explore our range of sink wastes

Use the category to compare sink wastes, valves, traps, and more. If you already know the outlet size and overflow details, you can filter the range faster and move straight to the options that suit the job.

For broader plumbing and heating jobs, you can also look at related parts in the same range and pick up what you need through Click & Collect or delivery from our nationwide network of branches. Travis Perkins supports professional tradespeople with product expertise, dependable service and extensive stock availability, so you can crack on with a setup that suits the layout.