Everything You Need to Know About PEX and Plumbing: What Size, Color, And Type Is Best for Your Needs?

If you’re like most people, the words “PEX” and “plumbing” don’t necessarily go together in your mind. But the truth is, PEX–a versatile type of plastic tubing–is becoming a more common fixture in plumbing systems.

PEX, or cross-linked polyethylene, is a type of tubing that is growing in popularity for plumbing projects. This material has many advantages over traditional copper piping, but there are some things to consider before you make your decision about what size, color and type of PEX to use for your needs.

In this blog post, we will explore the different options available for PEX tubing and help you decide which option is best for you. If you’re considering using or installing pex tubing in your home, here’s what you need to know.

What Is PEX And Why Should You Use It?

PEX tubing is a type of plastic pipe that is made from high-density polyethylene (HDPE). The molecules in HDPE are joined together using chemical bonds, which makes PEX more resistant to temperature changes and degradation than HDPE. PEX is used in a variety of applications, including plumbing, radiant heating, and snow melting. It is also becoming increasingly popular for use in greenhouses and hydroponic systems.

One advantage of PEX is that it can be connected using compression fittings, which do not require soldering or welding. This makes PEX easier to install than other types of pipe. In addition, PEX is flexible and can be routed through walls and ceilings without the need for elbows or other fittings. As a result, PEX is an attractive option for a variety of applications.

What Size PEX Should I Use For Plumbing?

PEX tubing is a popular choice for plumbing applications due to its flexibility and resistance to corrosion. It is available in a variety of sizes, with the most common being ½ inch, ¾ inch, and one inch. These sizes refer to the inside diameter (ID) of the tubing. The outside diameter (OD) will be slightly larger, depending on the wall thickness of the tubing. For most applications, ½ inch PEX tubing is sufficient.

However, ¾ inch or one inch tubing may be required for larger projects. PEX tubing is also available in different wall thicknesses, which will affect the OD. The standard wall thickness for ½ inch PEX tubing is 3/8 inch, but thicker walls are available for higher-pressure applications. When choosing PEX tubing, it is important to select the correct size and wall thickness for the job.

Are Red And Blue PEX The Same?

While red and blue PEX may look the same, they are actually slightly different. Red PEX is typically used for hot water lines, while blue PEX is used for cold water lines. The reason for this is that the color coding helps to prevent accidental cross-connection between the two lines.

However, there is no difference in the actual tubing material. The only difference is the color coding. So, if you need to replace a section of your hot water line, be sure to use red PEX. And if you need to replace a section of your cold water line, be sure to use blue PEX. Using the wrong type of PEX could result in serious plumbing problems.

Is Crimp Or Clamp Better For PEX

When it comes to connecting PEX tubing, there are two main methods – crimping and clamping. Both methods are equally effective in creating a watertight seal, but some plumbers prefer one over the other. Crimping involves using a special tool to compress a metal ring around the tubing. This creates a tight, secure connection that is less likely to leak.

Clamping, on the other hand, involves using a clamping tool to compress a plastic or metal ring around the tubing. This method is simpler and quicker, but it is important to make sure that the clamp is properly secured in order to avoid leaks. Ultimately, the best method for connecting PEX tubing is the one that works best for the individual plumber.

Is PEX Expansion Or Crimp Better?

When it comes to choosing between expansion and crimping for plumbing, there is no easy answer. It really depends on personal preference. Some plumbers prefer expansion because it is a one-time process – once the tubing is expanded, it stays that way.

Crimping, on the other hand, requires a crimping tool to be used every time a connection is made. However, many plumbers find that expansion is more time-consuming and difficult to achieve a secure connection. Ultimately, the decision between expansion and crimping comes down to personal preference and the specific requirements of the job.

Where Should You Avoid PEX?

PEX is a type of plastic that is commonly used in plumbing applications. It is durable and easy to work with, and it is resistant to most chemicals. However, PEX is not suitable for high-temperature applications, such as radiant floor heating. The material can start to break down at temperatures above 140 degrees Fahrenheit, which can lead to leaks or burst pipes.

Additionally, PEX is susceptible to damage from UV light. If the tubing is exposed to direct sunlight, it can become brittle and crack. For these reasons, it is important to use the appropriate type of tubing for your application. If you need a tubing that can withstand high temperatures or UV exposure, you should choose a different material such as copper or stainless steel.


If you are looking for a plumbing material that is flexible and can be customized to your needs, PEX might be the perfect choice for you. This innovative product comes in many sizes and colors, so you can find the perfect option for your bathroom. With PEX, you no longer have to worry about dealing with leaks or other plumbing problems. Give this product a try today and see how it can benefit your home.

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