What is the difference between a slotted and unslotted basin waste?
Slotted basin wastes are more common as they are designed for sinks that have an overflow and most do. Unslotted wastes are for use with basins without an overflow. It is important that you choose the correct basin waste for your sink to prevent flooding.
Overflow hole
A bathroom basin overflow is a small hole located below the taps at the back of the basin.
If your basin has an overflow then you need a slotted basin waste and if it doesn't, then you'll require an unslotted waste.
How does a slotted basin waste work?
The slot's purpose is to allow the water to be drained from the overflow.
How does an unslotted basin waste work?
Unslotted wastes work by draining the water away from the basin into the main waste. They are watertight when closed so allow the basin to fill with water, then when opened they allow the water to drain away.
Why do I need an unslotted basin waste?
If you have purchased a basin without an overflow, then the correct waste to use is an unslotted waste.
View our range of basin wastes.
