How to plunge a sink

Before you start

Confirm that this method matches both the fixture and likely obstruction. Prepare for spills, protect the surrounding surface and keep the work area away from children and pets.

• Flat-cup sink plunger
• Wet cloth for the overflow
• Gloves and splash protection
• Towels or a shallow tray

What a successful result looks like

Normal flow should return without leakage, gurgling or backup elsewhere. If the result is partial or short-lived, stop repeating the same process and investigate farther along the line.

• Stable water level
• Normal drainage speed
• No leak at disturbed joints
• No symptom in a connected fixture

Step-by-step approach

1. 1

   Remove the plug or strainer

2. 2

   Seal the overflow with a wet cloth

3. 3

   Add enough water to cover the plunger cup

4. 4

   Use controlled push-and-pull strokes without losing the seal

5. 5

   Test the flow and inspect beneath the sink for leaks