How do you install PTFE tape on plumbing pipework, and what is the difference between the yellow

Hey there, fellow plumbers and DIY enthusiasts

Let’s chat about something that often flies under the radar but is crucial for leak-free plumbing—PTFE tape. You know, that trusty tape that’s practically a rite of passage for anyone working with pipes

First off, let’s tackle the installation. If you want your joints to be watertight, you’ve got to put the tape on right. Start by wrapping the male threads of your pipe. Make sure you go clockwise—that’s right, follow the thread direction. Wrap it snugly, but don’t go overboard. Two to three layers are usually perfect. If you’ve overdone it, just peel back a layer or two

Now, here’s a tip: don't cover the first thread at the end of the pipe. We want to avoid any tape getting into the joint when you screw it in

Alright, what about the color difference? You might have seen yellow and white rolls of PTFE tape. They look similar, but they serve different purposes. White tape is typically used for water lines and softer materials. It’s great for household plumbing

Yellow tape, on the other hand, is your go-to for gas lines. It’s thicker and designed to handle the pressures and chemicals found in natural gas. So, if you're working on HVAC or gas piping, reach for that yellow roll. Don’t mix them up—trust me, it’ll save you a headache down the line

This simple trick of using PTFE tape correctly—and knowing your colors—can save you time, money, and the dreaded call-backs because of leaks

Got any more tips or stories about using PTFE tape? Drop a comment below. Let’s help each other out in this plumbing journey