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Why Is PEX Plumbing Bad?
January 17,2025

PEX, also known as cross-linked polyethylene, is one of the common plumbing materials that has emerged as an alternative to traditional materials. This type of plumbing material is made from high-density polyethylene, which gives it exceptional strength, flexibility, and durability. However, just like other plumbing materials, PEX has its advantages and disadvantages. In this article, you’ll learn about the positive attributes and the downsides of PEX plumbing. The experienced plumbers at Mr. Rooter Plumbing are conversant with the pros and cons of different types of plumbing materials, including PEX.

The Advantages of PEX Plumbing

  • More Flexible Than Metal Plumbing

PEX plumbing is highly flexible; hence, it can bend around corners without the need for multiple fittings. This reduces the chances of leaks and makes installation easier, especially in tight spaces.

  • Quick to Install

PEX plumbing can dramatically speed up installation. Since it requires fewer joints and no soldering, skilled plumbers can easily snake the pipes through walls and floors. This efficiency makes PEX a great choice for both new construction and repair projects.

  • More Affordable Than Copper Plumbing

This is one of the reasons why PEX has become an alternative to metal plumbing materials, such as copper. The materials are cheaper and easier to install, all of which contribute to lower installation costs. If you’re looking for an affordable plumbing material, you may want to choose PEX plumbing.

The Downsides of PEX Plumbing

  • Possible Leaching

PEX pipes can sometimes absorb chemicals from the environment, especially in harsh water conditions. While generally safe for drinking water, some studies suggest certain brands might slightly affect water taste or quality. To minimize this risk, choose high-quality PEX and always hire a licensed plumbing service for proper installation.

  • UV Light Sensitivity

PEX isn't meant for outdoor use. Sunlight, especially UV rays, can weaken and damage PEX over time. Even indoors, it's best to keep PEX away from direct sunlight to prevent it from becoming brittle and failing prematurely.

  • Susceptible to Rodents

Unlike metal pipes, PEX can be chewed through by rodents. If you have a rodent problem, you'll need to take extra precautions. This might involve using protective covers or installing PEX in areas that are less accessible to rodents to avoid costly plumbing repairs.

  • Non-Recyclable

Another downside of PEX is that the material is not easily recyclable due to its cross-linked polymer structure. This makes it less environmentally friendly than copper or other reusable materials. If sustainability is a priority, homeowners may need to weigh the long-term benefits of PEX against its impact on waste management and environmental responsibility.

  • Weak to Fire

PEX has a lower heat resistance compared to metal pipes, meaning it can melt or burn in high temperatures. This makes it unsuitable for exposed areas near heat sources. In fire-prone locations, additional safety measures or alternative materials may be necessary for better protection.

Reach Out To Mr. Rooter Plumbing for Exceptional Plumbing Service

When you’re in need of reliable plumbing service, trust the pros at Mr. Rooter Plumbing to do an exceptional job. Whether you have a plumbing emergency or need to make plumbing upgrades in your property, our plumbers have the expertise and experience to get the job done right. From pipe installation to fixture repair, leak detection, drain cleaning, sewer line replacement, and emergency plumbing repair, we do it all.