Why Do Plumbers Not Use PEX?

Introduction

PEX or cross-linked polyethylene is a popular material used for plumbing systems these days. However, some people wonder why plumbers do not use PEX for their work. In this article, we will explore the reasons why plumbers still prefer traditional materials over PEX.

History of PEX and Plumbing

PEX was introduced in the 1960s as an alternative to copper and galvanized steel pipes. It was primarily used in Europe until it became popular in the United States in the 1980s. The use of PEX has increased over the years due to its affordability and durability.

Plumbing has been around for thousands of years, dating back to ancient civilizations such as the Babylonians and Egyptians. Initially, plumbing systems used clay pipes and lead pipes until the invention of copper pipes. Today, traditional materials such as copper, galvanized steel, and PVC are still widely used in plumbing systems.

PEX vs. Traditional Materials

PEX has several benefits over traditional materials, such as:

- Affordability: PEX is cheaper than copper and galvanized steel pipes.
- Durability: PEX is corrosion-resistant, and it can withstand high temperatures and pressure.
- Flexibility: PEX is highly flexible, making it easier for plumbers to install in tight spaces.

However, traditional materials still have some advantages over PEX:

- Longevity: Copper pipes can last for up to 50 years, while galvanized steel pipes can last for up to 20 years. PEX, on the other hand, has a lifespan of 20-25 years.
- Water Quality: Copper and galvanized steel pipes do not affect the quality of the water they transport, while PEX can leach chemicals into the water.
- Environmental Impact: Copper and galvanized steel pipes are recyclable, while PEX is not.

Installation Issues with PEX

There are several installation issues with PEX that plumbers have to deal with, such as:

- Fittings: PEX requires special fittings that are expensive compared to traditional materials.
- Crimping: PEX requires crimping tools that can be difficult to use, especially for beginners.
- Freezing: PEX is more susceptible to freezing than copper pipes, which can cause it to crack.

These issues can make PEX more challenging to install than traditional materials.

PEX and Building Codes

PEX is not approved for use in all states or municipalities. Some building codes require specific types of PEX, fittings, and installation methods that can be expensive and time-consuming. Plumbers have to be well-versed in the local building codes to ensure that their work is up to the required standards.

Conclusion

In conclusion, plumbers do not use PEX exclusively due to the longevity and water quality concerns over PEX materials, as well as some difficulties that can be had with installation and local building codes. However, as technology advances and building codes become more accessible, we can expect to see PEX becoming more widely used in plumbing systems.