Plumbing contractors face unique liability risks every time a technician steps onto a job site. Introducing high-powered mechanical drain snakes, hydro-jetters, or cutting into old copper or cast-iron lines can uncover pre-existing structural decay, collapsed pipes, or hidden sewer defects. Without clear pre-job written authorizations that explain these inherent risks, plumbers frequently get blamed for old, brittle pipes that collapse during standard clearing procedures.
The Plumbing Work Authorization Checklist
Before beginning any clearing, demolition, or line repair, the technician must secure client sign-off on:
- Pre-Existing Pipe Condition Disclaimers: Explicit language stating that mechanical cable snaking or hydro-jetting can break or punch through old, rusted cast iron, Orangeburg, or clay pipe lines, and that the plumbing company is not liable for pre-existing pipe degradation.
- Water Damage and Main Shutoff Waivers: Acknowledgment that the homeowner has identified the main water shutoff valve and that minor water spills during trap removal are common.
- Flat-Rate vs Time-and-Materials Billing: Unambiguous pricing breakdown, including emergency dispatch fees, camera inspection costs, and hourly rates for unforeseen complications.
Tech-to-Customer Field Execution
- Evaluate the Issue: The plumber inspects the fixture or cleanout and discusses options with the homeowner.
- Present Mobile Sign-Off: The plumber generates the work authorization on their mobile phone or tablet. The customer reads the drain disclaimer and signs with their finger.
- Post-Repair Completion Signature: When the drain flows smoothly, the technician demonstrates clear drainage and captures a final completion signature confirming the work was done satisfactorily.
Sewer Camera Inspections and Root Intrusion Documentation
When clearing recurring main drain blockages, wise plumbing contractors capture high-definition sewer camera video before and after snaking. Embedding a link or thumbnail reference to the sewer video within the customer's digital work order provides incontrovertible proof of tree root intrusion, crushed terracotta pipes, or grease buildup, helping customers understand why permanent pipe lining or excavation is necessary.
Undersign gives plumbing contractors an effortless way to capture signed authorizations in the field from any smartphone, protecting technicians against pre-existing pipe liability and payment disputes.