Can PEX Be Buried? Your Comprehensive Guide to Underground PEX Piping

If you are considering burying PEX piping underground, you may be wondering if it is up to code and what guidelines you should follow. In this article, we will explore the types of PEX piping suitable for burial, discuss the advantages and disadvantages of PEX pipes, and provide insights into PEX connectors and fittings for underground use. Whether you are a homeowner planning a DIY project or a professional plumber seeking to ensure compliance, this article will provide valuable information to help you make informed decisions.

So, can PEX be buried? Let’s find out if can pex be buried.

If you’re wondering whether it’s possible to bury PEX underground, check out our article on “Can You Bury PEX Underground?” for all the information you need to know.

The Facts at a Glance

  • PEX-A, PEX-B, and PEX-C are types of PEX piping suitable for burial underground.
  • Guidelines for burying PEX tubing include determining the depth for insulation and following best practices for underground burial.
  • PEX pipe offers advantages such as flexibility and resistance to corrosion, but also has disadvantages like a higher cost compared to other materials.

can pex be buried


PEX-A: The Unrivaled Choice for Lasting and Adaptable Piping When it comes to piping that can stand the test of time, PEX-A reigns supreme. Its remarkable flexibility allows it to conquer any obstacle, making it the perfect choice for areas with ever-shifting soil or freezing temperatures. But that’s not all – PEX-A is not only flexible, it’s also incredibly versatile.

Whether you’re in need of piping for a refreshing outdoor shower or a reliable radiant heating system, PEX-A can effortlessly handle the task at hand. And let’s not forget about its durability. With PEX-A, you can bury your worries along with your piping underground, knowing that cracks and leaks will never be an issue.

This piping is specifically designed to withstand the challenges of burial , guaranteeing a dependable and long-lasting solution. So, if you’re seeking a piping option that offers unmatched flexibility, durability, and suitability for both hot and cold water applications, look no further than PEX-A. Rest assured that your piping system will thrive in the face of adversity when you choose PEX-A for all your burial needs.


PEX-B: The Perfect Choice for Underground Burial When it comes to burying pipes underground, PEX-B is the ultimate champion. Its remarkable resistance to chemicals allows it to endure contact with soil and water, making it an incredibly sturdy option. What sets PEX-B apart is its affordability compared to PEX-A.

It provides a pocket-friendly alternative for burial purposes without compromising on durability and reliability. Homeowners favor PEX-B for their underground plumbing needs due to its cost-effectiveness and chemical resistance. Whether you’re installing a new system or replacing old pipes, PEX-B guarantees the performance you desire, bringing you peace of mind.

To ensure that PEX-B is the perfect fit for your project, seek advice from a professional plumber. They possess the expertise to guide you and ensure that your installation adheres to all regulations and codes. In conclusion, PEX-B reigns supreme as the ideal choice for underground plumbing systems.

Its exceptional chemical resistance, affordability, and widespread use in residential applications make it a reliable and economical solution for burying PEX pipes.


The Optimal Choice for Buried Pipes: PEX-C When it comes to burying pipes underground in commercial plumbing systems, PEX-C stands out as the go-to option. With its cost-effectiveness and exceptional resistance to chemicals commonly encountered in buried applications, PEX-C offers the best of both worlds. If you’re working within a budget but refuse to compromise on quality, look no further than PEX-C.

It delivers reliable performance at a fraction of the price compared to other types of PEX pipes. But affordability is not the only advantage PEX-C brings to the table. Its remarkable resistance to chemicals is a game-changer for commercial underground plumbing systems.

These pipes face constant exposure to substances that can corrode or harm them, and PEX-C ensures they can withstand these challenges with ease. The popularity of PEX-C in commercial settings speaks volumes about its affordability and chemical resistance. It’s the ultimate choice for underground plumbing systems in buildings such as offices, shopping centers, and industrial facilities.

So, if you’re in search of a trustworthy and cost-effective solution for burying pipes underground, look no further than PEX-C. Its affordability , chemical resistance, and widespread use in commercial settings make it the intelligent choice for any underground plumbing project.

can pex be buried

Comparison of PEX Types: Advantages and Disadvantages (Tabelle)

PEX Type Features Advantages Disadvantages
PEX-A – High flexibility and shape memory
– Requires expansion fittings
– Resistant to bursting in freezing conditions
– Easy to install
– Less prone to leaks
– Can tolerate extreme temperature changes
– More expensive than other types
– Limited availability in some regions
PEX-B – Moderate flexibility
– Requires crimp or clamp fittings
– Resistant to bursting in freezing conditions
– Cost-effective
– Widely available
– Suitable for most applications
– Susceptible to kinking if not properly handled
– Potential for leaks over time
PEX-C – Rigid and less flexible
– Requires crimp or clamp fittings
– Resistant to bursting in freezing conditions
– Affordable
– Easily identifiable by color coding
– Suitable for most applications
– Prone to kinking if not properly handled
– Potential for leaks over time

1/4 Is Burying PEX Pipe Underground Up To Code?

To bury PEX pipe underground, it is vital to adhere to the specific regulations in your area. These regulations vary, so consulting with local authorities is essential to ensure compliance. One important factor to consider is the approved burial depth for PEX pipe, which is determined by local guidelines.

It is crucial to follow these guidelines to ensure the safety and functionality of your buried PEX pipe system. Consulting with local authorities is crucial as they possess the most up-to-date information on regulations in your area. They can provide guidance on the appropriate burial depth and any other requirements.

By adhering to the regulations and guidelines set by local authorities, you guarantee that your buried PEX pipe system meets all necessary standards. This not only prevents potential issues but also ensures the durability and efficiency of your underground plumbing system .

If you’re considering installing a PEX pipe underground, check out our article on PEX Pipe Underground to learn all about its benefits and how to properly install it.

How Deep Should Insulated PEX Pipe Be Buried?

Properly burying insulated PEX pipe requires careful consideration of various factors. Soil type and local climate are crucial in determining the ideal burial depth. Different soils impact insulation and overall performance, making it essential to select a depth that provides adequate insulation while accounting for soil conditions.

In colder regions, deeper burial is necessary to prevent freezing and potential damage. However, shallow burial poses risks such as landscaping activities or accidental digging. To ensure compliance with regulations, consult local authorities and adhere to recommended minimum burial depths.

By taking these factors into account, you can guarantee the long-lasting efficiency of your buried PEX pipe system.

can pex be buried

PEX is a popular choice for plumbing installations, but can it be buried underground? Find out in this video on how to protect PEX when installed below the surface.

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Best Practices for Burying PEX Pipe Underground

To ensure the enduring performance of buried PEX pipe, it is crucial to shield it from the elements and regularly inspect for potential problems. Insulating the pipe and employing protective barriers will significantly enhance its durability . By adhering to these prudent practices, you can safeguard against freezing, bursting, and other potential issues, ensuring the longevity of your buried PEX pipe.


When it comes to burying PEX pipes, it’s crucial to weigh the benefits of each type. PEX-A stands out for its remarkable flexibility and durability, making it the perfect choice for buried applications. Its ability to expand and contract without snapping ensures its longevity underground.

On the other hand, PEX-B boasts excellent chemical resistance and offers a cost-effective solution for burial. It’s widely used in residential underground plumbing systems, providing reliability and affordability. Similarly, PEX-C is also a cost-effective option with good resistance to chemicals when buried.

It’s commonly employed in commercial underground plumbing systems, offering an affordable and reliable solution. Ultimately, each type of PEX piping brings its own advantages to burial. PEX-A excels in flexibility and durability, PEX-B offers cost-effectiveness along with chemical resistance, and PEX-C provides an affordable option with resistance to chemicals.

Whichever type you opt for, rest assured that your buried PEX pipes will deliver years of reliable performance.

If you’re wondering whether PEX pipes need to be insulated, check out our article “Does PEX Need to be Insulated?” to learn more about the importance of insulation and how it can protect your pipes.


When it comes to burying PEX pipes underground, there are a few crucial factors to take into account. Firstly, finding suitable PEX-C fittings specifically designed for underground use can prove to be quite a challenge. Secondly, it’s important to note that PEX-B, commonly used for burial purposes, is susceptible to damage caused by exposure to UV rays.

Prolonged sunlight exposure can ultimately lead to the deterioration of the material, resulting in cracks or leaks in the pipes. Lastly, while PEX-A is renowned for its flexibility and durability, it does come with higher upfront costs compared to other types of PEX pipes. However, its long-term benefits, such as its resistance to expansion and contraction, make it a favored choice for buried applications.

To ensure the best decision is made for your underground plumbing system, it is highly recommended to carefully consider these drawbacks alongside the advantages and seek guidance from a professional plumber. Their expertise will guarantee that your buried PEX pipes are installed correctly and adhere to local regulations.

Fun Fact: Did you know that PEX pipe is so durable that it can withstand freezing temperatures without bursting?


My name is Warren and I am a professional plumber licensed and insured in the State of California. I have been in the business for over 10 years and have undertaken small and large projects including bathroom renovation, toilets, garbage disposals, faucets, sinks and kitchen plumbing jobs. This site is based on my experience with toilets. I have installed the best brands and models in all sizes and shapes. I hope this helps you with the unbiased information that you need to make the right decision.


Can PEX Crimp Fittings be Used Underground?

The subterranean terrain presents a unique challenge for PEX crimp fittings. We must delve into their resilience against burial conditions, the precautions necessary for underground usage, and the pros and cons of employing them in such circumstances. Although PEX crimp fittings generally prove suitable for underground purposes, one must take certain factors into account.

Ensure they are constructed from materials capable of enduring moisture, soil chemicals, and temperature fluctuations. Adequate insulation and safeguarding measures must be implemented to avert potential harm. Using PEX crimp fittings below the surface does offer its advantages.

Their installation is a breeze, requiring only basic tools, making them ideal for DIY enthusiasts. Moreover, their cost-effectiveness compared to alternative fittings makes them a boon for those working within budgetary constraints. Nevertheless, it is crucial to recognize the drawbacks.

PEX crimp fittings may not possess the same level of durability as their counterparts, particularly in hostile subterranean environments. Mishandling during installation or a lack of protective measures can result in leaks or failures. Additionally, sourcing PEX crimp fittings may prove more arduous in comparison to other options.

In summary, PEX crimp fittings can indeed find utility underground, but the compatibility with burial conditions must be meticulously considered. While they offer affordability and ease of installation, a thorough evaluation of their durability and availability is imperative. Seeking guidance from a professional plumber is always wise when determining the most suitable fittings for underground PEX applications.

can pex be buried

Can Sharkbite Fittings be Used Underground?

Delving into the realm of submerged plumbing, we find ourselves contemplating the compatibility of Sharkbite fittings with buried PEX pipes. To navigate this watery terrain, there are a few key considerations to bear in mind. First and foremost, it is crucial to note that Sharkbite fittings are specifically designed for PEX pipes.

Therefore, if you opt for PEX as your underground plumbing conduit, these fittings should serve you well. However, success hinges on the meticulous execution of installation and securing to prevent any unwelcome leaks or damage. One notable advantage of employing Sharkbite fittings for subterranean connections lies in their elegant simplicity.

Unlike other fittings, they require no specialized tools or crimping, thereby saving precious time and effort during the installation process. On the flip side, it is important to acknowledge that these fittings can be susceptible to damage if not shielded adequately. The unforgiving forces of impact or exposure to harsh elements can lead to unfortunate leaks or failures, undermining the integrity of the plumbing system.

In conclusion, the utilization of Sharkbite fittings underground alongside PEX pipes is indeed possible. However, to ensure the longevity of this partnership, diligent installation and safeguarding are of utmost importance. It is highly advisable to seek the guidance of a seasoned professional plumber who can guarantee both proper installation and adherence to relevant regulations.

How to Properly Bury PEX Pipe: A Step-by-Step Guide for Underground Installation

  1. Research the local building codes and regulations regarding burying PEX pipe underground.
  2. Select the appropriate type of PEX pipe suitable for burial, such as PEX-A, PEX-B, or PEX-C.
  3. Ensure the PEX pipe is properly insulated to protect it from freezing temperatures.
  4. Determine the recommended depth for burying the insulated PEX pipe based on local guidelines.
  5. Prepare the trench for burying the PEX pipe, making sure it is wide enough to accommodate the pipe and any necessary fittings.
  6. Carefully lay the PEX pipe into the trench, taking care not to damage it during the installation process.
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Types of PEX Fittings

The success of burying PEX pipes lies in the careful selection of fittings. Two common types are crimp fittings and Sharkbite fittings. Crimp fittings, although affordable and easily accessible, require a crimping tool for installation, which can be an extra expense.

If not installed properly, they may not be as durable and could lead to leaks. In contrast, Sharkbite fittings offer convenience and ease of installation without the need for special tools. However, they can be pricier and may not be readily available everywhere.

Other fitting options for burying PEX pipes include compression fittings , expansion fittings , and push-fit fittings. Each type has its own advantages and considerations. Research and professional guidance are important in finding the best fit for your project.

Ultimately, your choice of fittings should align with your budget , expertise , and project requirements. By weighing the pros and cons of crimp fittings and Sharkbite fittings, as well as exploring other options, you can ensure a successful and reliable buried PEX system.

can pex be buried

PEX Connections Tips

When it comes to burying PEX pipes underground, the importance of proper installation techniques cannot be overstated. To ensure success, I’m here to share with you some invaluable tips:

1. Equipping yourself with the right tools and materials is crucial. Make sure you have PEX-specific tools and fittings on hand.

2. Don’t overlook the manufacturer’s guidelines for installation. They often provide specific instructions on fittings, spacing, and support.

3. Take the time to prepare the PEX pipes properly. This means cutting them to the correct length, deburring the ends, and ensuring they are clean.

4. Different types of fittings require different techniques. Whether it’s crimping, expansion, or push-to-connect, make sure you use the correct method for the fitting you are working with.

5. Once everything is in place, don’t forget to regularly inspect and maintain the buried PEX pipes. Look out for any signs of damage or leaks, and make sure they are adequately insulated. By diligently following these tips, you can rest assured that your underground PEX plumbing system will be installed with precision and provide reliable performance for many years to come.

Can PEX Pipe be Buried Underground?

  • PEX-A, PEX-B, and PEX-C are types of PEX piping that are suitable for burial underground.
  • Burying PEX pipe underground is generally up to code, but it’s important to follow guidelines and regulations specific to your location.
  • When burying PEX tubing, it should be buried deep enough to protect it from potential damage. The recommended depth for insulated PEX pipe is typically around 18 inches.
  • There are several advantages to using PEX pipe, including its flexibility, durability, resistance to corrosion, and ease of installation.
  • However, there are also some disadvantages to consider, such as its susceptibility to damage from UV exposure and the potential for it to leach chemicals into the water supply.
  • PEX crimp fittings can be used underground, but it’s important to ensure they are properly installed and compatible with the specific PEX pipe being used.
  • Sharkbite fittings, which are a type of push-to-connect fitting, are not recommended for underground use as they may be more prone to failure in buried applications.
  • There are different types of PEX fittings available, including crimp fittings, push-to-connect fittings, and expansion fittings, each with its own advantages and considerations.

2/4 Do PEX Pipes Burst Or Freeze When Buried?

When it comes to burying PEX pipes , there are important considerations to keep in mind. The flexible and durable nature of these pipes make them a popular choice for underground applications . However, there are potential risks that can arise.

Extreme temperatures, soil movement, and water pressure changes can all pose challenges to buried PEX pipes. These external factors can put stress on the pipes and increase the likelihood of bursting or freezing. To mitigate these risks, it is crucial to insulate the pipes and provide them with additional protection against extreme cold.

Utilizing barriers or sleeves can offer an extra layer of defense, safeguarding against potential damage. It is important to note that the risks associated with bursting and freezing can vary depending on various factors, including the specific circumstances and climate. Seeking the guidance of a professional plumber can help ensure that the necessary precautions are taken.

Additionally, regular maintenance and inspections are recommended to detect and address any issues in a timely manner. In conclusion, by properly insulating and protecting your buried PEX pipe system, you can significantly reduce the chances of pipe bursting and freezing. Taking proactive measures and consulting with experts will contribute to the longevity and optimal functionality of your underground pipes.

can pex be buried

3/4 Final Thoughts: Can You Bury PEX?

The fate of buried PEX pipes hangs in the balance, swayed by the whims of the local climate. Drastic temperature fluctuations or icy cold winters can wield a heavy toll on these pipes, threatening their very existence. To safeguard against the perils of bursting and damage, insulation and protection against freezing become indispensable.

But that’s not all. The durability of buried PEX pipes also hinges upon regular maintenance. Though renowned for their resilience, these pipes require periodic scrutiny for signs of wear, damage, or leakage.

By promptly identifying and resolving any issues, one can avert potential catastrophes. When it comes to installing buried PEX pipes, it’s wise to seek the guidance of a seasoned plumber. These experts possess the know-how and expertise to ensure proper installation, adhering to local regulations.

And in your quest for buried pipe perfection , they can offer invaluable advice on the best practices for your specific area. So, can you bury PEX pipes? Indeed, you can.

However, it’s paramount to factor in the local climate, perform regular maintenance, and consult a professional plumber. Only then can you bask in the longevity and flawless installation of your buried PEX pipes.


In conclusion, burying PEX pipe underground is a viable option when done correctly and in compliance with local codes and guidelines. PEX-A, PEX-B, and PEX-C are all suitable for burial, and the depth at which the pipe should be buried will depend on the climate and insulation used. PEX pipe offers numerous advantages, such as flexibility, durability, and resistance to freezing and bursting.

While there are some disadvantages to consider, such as potential UV degradation and limited fitting options, overall, PEX is a reliable choice for underground installations. It is important to use appropriate connectors and fittings designed for underground use, such as PEX crimp fittings or Sharkbite fittings. By following best practices and guidelines, PEX can provide reliable plumbing solutions for buried applications.

We hope this article has provided valuable information for readers seeking to understand the feasibility of burying PEX pipe. If you found this article helpful, we recommend exploring our other articles on PEX plumbing installations and maintenance for further guidance on this topic.

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