Are you installing a new washbasin or sink and wondering whether to choose a waste with or without an overflow? This guide explains exactly what an overflow is, how to quickly determine which waste you need, and the different types of wastes available. We provide direct links to suitable products, such as click wastes, always-open wastes, and complete traps.
What is an overflow and why is it important?
The overflow is the small hole high up in your washbasin or sink that prevents water from spilling over the edge. A waste with an overflow has an internal channel that connects this overflow hole to the waste. If your sink does not have an overflow hole, you need a waste without an overflow. Choosing the right combination is important for safety, proper drainage, and preventing leaks.
How can you tell whether a waste has an overflow?
- Look inside the washbasin or sink: if you see a separate round or elongated hole near the rim, it has an overflow.
- Check the waste: models with an overflow usually have a side opening or internal channel for the overflow. Models without an overflow are sealed and do not have this opening.
- Product name and specifications: if it states with or without an overflow, follow that. If you are unsure, do not choose based on guesswork, but look at the overflow hole in your washbasin or sink.
Which waste is right for your situation?
Sink or washbasin without an overflow
Choose a click waste without an overflow. This is a pop-up waste that opens and closes with a click, but without an overflow channel. View our bronze option here: bronze pop-up click waste without an overflow.
Washbasin with an overflow
If your washbasin has an overflow hole, choose a waste with an overflow so that water can drain safely through the internal channel. Tip: match the finish to your tap and trap. View: bronze pop-up waste with an overflow.
Public spaces or where continuous flow is required
In hospitality venues, offices, or public washrooms, it is often desirable that the waste cannot be closed. In these cases, choose an always-open waste. It has no overflow and no closing mechanism, but guarantees continuous flow. View: always-open washbasin waste.
Combine with a complete trap
For a neat and functional installation, combine the waste with a matching trap. We offer sets for situations with or without an overflow, as well as always-open setups. View all options: complete traps and trap sets.
Common mistakes and quick checks
- Using a waste with an overflow when there is no overflow hole can lead to incorrect installation and potential leaks.
- Closing a click waste in a sink without an overflow can lead to water damage if it is accidentally left full. Always consider an always-open waste in high-risk situations.
- Match the finish of the waste, trap, and tap for a clean, consistent design.
- Check the dimensions of the connections and the thickness of the sink basin before ordering.
Brief installation guide
- Choose the correct waste based on whether or not there is an overflow hole.
- Place the sealing rings according to the instructions and centre the waste in the tap hole.
- Hand-tighten the nut and then tighten it evenly to distribute the pressure.
- Install the trap and extend it to the wall waste to ensure a straight, strain-free connection.
- Fill the washbasin and check for leaks at the waste, ring, and trap. Also test the click function or the flow of an always-open waste.
FAQ
What happens if I choose the wrong waste?
An incorrect combination can lead to poor drainage or leaks. Always use a waste without an overflow for a sink without an overflow, and a waste with an internal overflow channel for a sink with an overflow.
Is an always-open waste suitable for home use?
Yes, for example in utility rooms or guest washrooms where a closing mechanism is not needed. For everyday convenience, most people choose a click waste.
Which finish matches my bathroom style?
Bronze tones and brushed finishes complement traditional and nostalgic bathrooms. Choose a waste and trap in the same finish as your tap for a cohesive look.
Choose the right waste directly
- For washbasin wastes without an overflow in various: click wastes without an overflow
- For washbasin wastes with an overflow in various colours: wastes with an overflow
- For public spaces or continuous flow: always-open wastes
- Complete the set with a matching trap: view all traps
Ready to choose? Order your new waste and trap from Badkranenwinkel and complete your washbasin.
