What the service should include
The engineer may isolate the fixture, open a suitable access point and use a cable, wet vacuum or controlled jetting according to the pipe.
- Confirm the affected system and access
- Assess hazards and previous treatments
- Explain the proposed method
- Check the result before leaving
Questions, evidence and outcome
Ask for confirmation that the restriction, not just the standing water, has been removed and that disturbed joints remain watertight.
- Which section is believed to be blocked?
- Will fittings or appliances be disconnected?
- How will leaks and flow be checked?
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.