How to recognise it
Fats and oils cool onto pipe walls and capture food particles. The result can narrow a kitchen waste line progressively before it stops completely.
- Kitchen line affected
- Greasy residue or odour
- Symptoms worsen after cooking or dishwashing
Removal and prevention
Clean an accessible trap and use a suitable mechanical method; longer or heavily coated lines may need professional jetting or descaling.
Scrape plates and collect fats in a container instead of pouring them down the sink.
- Match the tool to the pipe and material
- Verify full flow after clearance
- Investigate a fast recurrence
- Change disposal or maintenance habits where relevant
Step-by-step approach
- 1
Locate the affected section
- 2
Compare the signs with other possible causes
- 3
Choose a compatible removal method
- 4
Restore and verify normal flow
- 5
Prevent recurrence or arrange a condition survey
Important safety point
A symptom cannot confirm the pipe condition on its own. Stop DIY work if the route is unknown, tools jam, wastewater backs up or the blockage returns.