Gas Lines On Roof

Obviously you need to reseal the roof around the pipe entry point.

Gas lines on roof.

Supply branch and drop lines or risers. The piping inside the house is called the gas supply line or building line. The branch line terminates in a drop line which is a vertical pipe dropping down to the appliance from an overhead branch line. Gas furnaces stove dryer i have never seen gas piping run across a roof like this.

Branch lines run to individual appliances. Section 2401 1 101 2 governs the applicability of the provisions of chapter 24 which covers fuel gas piping systems fuel gas appliances and related accessories venting systems and combustion air configurations that are most commonly found in single family and duplex type dwelling structures. We had a gas line run over the roof and down into a kitchen wall when we redid our kitchen. But a ground union is allowed outdoors.

It extends straight up through the soffit across the roof and is run down into the home at various points. Running gas lines on flat roof. Sent this to my hvac guy who agrees that it is non standard install but not illegal. Buy the right gas pipes and fittings for the job.

Most domestic gas lines use 1 2 inch 1 27 cm through 1 1 2 inch 3 81 cm black pipe while large commercial projects sometimes use larger fittings up to 8 inch. Are we talking a ground union typically unions are only allowed at the fixture and meter. I ran across this gas piping yesterday. We will discuss some of the basics of inspecting gas piping.