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Only yellow Teflon tape is approved for use on gas lines. Also called yellow PTFE tape, it is thicker and specifically rated for use on natural gas and propane connections. Standard white Teflon tape is not safe for gas applications. If you have questions about sealing gas line connections, contact a pro like a gas line contractor or plumber who installs or runs gas lines.

While some building codes allow galvanized pipe for natural gas, it shouldn’t be used for propane. Propane can cause the pipe to wear down, leading to dangerous leaks. Instead of galvanized piping for propane, you should consider coated copper, black iron, or corrugated stainless steel tubing (CSST). For underground propane line installation, you can use polyethylene (PE).

Plumbers start by walking around the property to see if they notice any signs or sounds of a gas leak. They can also use tools like electronic gas detectors and infrared cameras to find the source of leaks. There are also detectors that use laser, thermal, and multi-wavelength imaging. All these devices allow a plumber to scan your home and pinpoint the exact location of a leak.

You may want to remove the gas line if it’s unsightly or if it’s causing a problem with future appliances. The downside is if you decide to go back to gas, you would need to run a new gas line to the area.  The average cost to run a new gas line is $550, but the installation can range anywhere from $120 to $1,350.