What the service should include
Diagnosis distinguishes a pan-trap obstruction from a soil-stack or downstream drain problem, avoiding unnecessary force on the toilet.
- Confirm the affected system and access
- Assess hazards and previous treatments
- Explain the proposed method
- Check the result before leaving
Questions, evidence and outcome
The toilet should flush and refill normally without movement, leakage, gurgling or backup at another fixture.
- Is pan removal included if required?
- Could the issue be in the shared line?
- Will seals be replaced and leak-tested?
Step-by-step approach
- 1
Describe every symptom
- 2
Disclose products and previous work
- 3
Agree scope and price basis
- 4
Ask how the result will be verified
- 5
Keep footage, reports and repair recommendations
Important safety point
Tell the engineer about every chemical or home treatment already used. Hidden corrosive liquid can put people at risk when a pipe or trap is opened.