Inheriting the Handyman's Concealed Gas Line
A remodel contractor hires you mid-job to finish a basement. The permit on the property was pulled by the homeowner as an owner-builder and covers "finish carpentry and drywall." Behind the newly hung drywall you find a black-iron gas line the contractor's handyman installed to a new vented fireplace log set: a union inside the closed stud cavity, 12 ft of unsupported 1/2 in. pipe, no sediment trap, and a shutoff 6 in. from the appliance. The log set is already connected and the homeowner has been using it. You hold the plumbing license; your journeyman does gas work but is not licensed as a gas fitter in this jurisdiction, and the code official has not inspected anything on this remodel.
1. What do you do before you touch anything, and what do you tell whom?
Read the worked answer
Make it safe and stop the concealment.
- Shut off the gas at the appliance valve and, if the installation is suspect, at the meter. Do not test-fire the log set to "see if it works" - you would be accepting the risk.
- Do not close up or finish over it. Concealed gas piping must be inspected while exposed.
- Notify the owner and the GC in writing the same day: what you found, that the gas portion is unpermitted and uninspected, and that you are not accepting it as-is. Photograph everything before anything is opened or altered.
- Call the authority having jurisdiction. The owner-builder permit covers carpentry and drywall, not gas piping, so there is no valid gas permit and no inspection record.
- Permit the work in the proper name. You cannot silently adopt another party's unpermitted concealed work; obtain a gas permit under the licensed contractor of record, expose the run, and request inspection.
What you must not do is sign a homeowner's inspection card or a final as though you had installed and tested work you did not perform.
2. Which of the observed conditions are code violations, and what is the corrective scope?
Read the worked answer
- Union in a closed stud cavity: prohibited. Concealed gas piping joints must be made without unions (threaded, welded, or brazed) or must remain accessible. Cut out the union and re-run it, or create an accessible opening approved by the AHJ.
- 12 ft of unsupported pipe: support is required at the code's interval table for the pipe size and at changes of direction. Strap it.
- No sediment trap: where the appliance doesn't include one, a sediment trap/drip leg is required at the inlet, as close to the appliance as practical.
- Shutoff at 6 in.: distance is generally fine if it is accessible and the appliance can be isolated; it must be a listed gas valve, identifiable, and not buried.
- No test on record: the new and exposed piping must be pressure-tested at the adopted test pressure (commonly not less than 3 psi held for the specified duration, or 1.5 times working pressure - confirm the local text), and the test witnessed before concealment. Leak-test every joint with approved leak-detection methods, never a flame.
- Appliance side: verify the log set is listed for that fireplace and that vent clearances and termination meet the listing, since the same handyman may have set it.
Scope is: expose, correct, permit, test, inspect, then conceal.
3. How do licensing and scope-of-work rules shape who does what on this job?
Read the worked answer
- Gas piping is licensed work. It must be installed under a permit by the properly licensed contractor of record. The handyman's installation was unlicensed, and the owner-builder permit does not cover it.
- Your journeyman cannot do it. If he is not licensed for gas in this jurisdiction, you do not assign him gas work and you do not let him "help" on the gas run. The licensed contractor is responsible for the work of employees, and the scope is set by the license held and the local ordinance.
- You cannot ratify another's work. Filing a permit does not retroactively make uninspected concealed work compliant; it has to be exposed and inspected.
- Utility interface: if service has been shut off, only the utility or another authorized party restores it; do not re-light and walk away.
- Paper trail: put the findings, your scope, and the AHJ's direction in writing to the GC and owner, and notify your insurer of pre-existing unpermitted work. If the owner refuses to permit and inspect, document the refusal and the unsafe condition - an unsafe concealed gas joint is a reportable condition, not a customer preference.