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Can PEX Be Buried In Concrete – Details Explained

Nowadays, it has become very common to use PEX pipes in water plumbing. PEX pipe is a type of flexible pipe made of cross-linked HDPE.

If you have ever bought a PEX pipe, you know three types of PEX pipes available in the market – PEX A, PEX B, and PEX C. It also varies in color.

Red PEX pipe is used to supply hot water. Blue PEX pipe is used to supply cold water. On the other hand, white and grey PEX pipes supply both hot and cold water. The average price of PEX pipe in the market is half a dollar to 2 dollars per foot. Now the question is, can PEX be buried in concrete? If possible, how long will the pipe last in the concrete? As well as how to bury PEX pipe in concrete?

Can PEX Be Buried In Concrete

Can PEX Pipes be Buried in Concrete – Amazing Information

Can PEX Pipes be Buried in Concrete - Amazing Information

The answer is yes; PEX pipe can be buried in concrete. You can bury PEX pipe in your house’s concrete to supply water if you want because these pipes are designed for water plumbing. However, because the pipe is flexible, it is more likely to propagate during water supply.

As a result, friction with the concrete can cause the pipe to rupture. There is also a solution to this problem. Instead of putting the pipe directly into the concrete, embedding it in the sand, and then covering it with concrete, the pipe is not likely to burst. Even if the pipe expands, the layer of sand around the pipe absorbs that expansion.

How Long Do PEX Pipes Last in Concrete?

How Long Do PEX Pipes Last in Concrete

PEX pipe is currently the most popular plumbing pipe. The main reason behind its extreme popularity is its durability. The pipe is constructed so that the pipe is not damaged by friction with various types of sharp objects under the ground, such as stones, pieces of metal, etc. The pipe is given a crisscross pattern, making it even stronger and more durable than metal pipes, such as copper.

The average lifespan of a PEX pipe under concrete is considered to be up to 50 years. It is why most plumbers prefer to use PEX pipe instead of metal pipe. It is very easy to use as it is very light in weight. You can bend it in any way for the flexibility of the PEX pipe. It can be easily adapted to different corners of your home. You can also install PEX pipe in the flooring of your house if you want.

Most of the professionals work with PEX pipe as it is convenient to install. Another advantage of PEX pipe is that it can withstand temperatures up to 200 degrees Fahrenheit. Besides, another reason behind the extreme popularity of PEX pipe is that it is much cheaper than other pipes.

Why Should I Use PEX Pipe? What are the Advantages of PEX Pipe?

Why Should I Use PEX Pipe What are the Advantages of PEX Pipe

Good question. You will be forced to use PEX pipe for several reasons. Most professionals use PEX pipes because of their unique features. Let’s take a look at some of the PEX pipe features that you should use.

Affordable Price

Affordable Price

The biggest advantage of PEX pipe is it’s relatively low cost. Where you can get PEX pipes per foot for half a dollar to 2 dollars in quality, a copper-like metal pipe will cost from 4 to 10 dollars per foot. As you can see, plumbing your entire home with PEX pipes saves you thousands of dollars.

Easy To Install

Easy To Install

PEX pipe is very easy to install. Due to its flexibility, it can be bent as desired. If there is any obstruction in the movement of the PEX pipe due to its flexibility, it can be bent and taken in another direction. In addition, if any metal comes in contact with the pipe, the pipe is less likely to be damaged.



If you use a metal pipe during plumbing, there is a problem. The problem is that when you have to change the direction of the metal pipe, you have to put an elbow with it. And then, the metal pipe has to be cut with a blade. But there is no such problem with the pipe.

You can pull the pipe from your home’s water source to the tap of the basin or the shower in the bathroom if you want. If the pipe is long enough, there is no question of bandaging. Again when you want to remove the pipe, you can pull it from either side without cutting your beautiful and smooth wall.

Central Shut-Off System

Central Shut-Off System

Another unique feature of PEX pipes is their central shut-off system. That means you don’t have to put any extra shut-off. If there is a problem with the pipe, you can easily change it with the help of a shut-off. Simply put, you can accomplish this task just by the way you turn off your sink or shower. It means that it will not disrupt the water supply to your home.

DIY Friendly And Easy To Handle

DIY Friendly And Easy To Handle

Many people around us like to do their own thing. PEX pipe is the best choice for them. Because professionals are not required to handle PEX pipes, you can do small plumbing in your home with this pipe with a little general knowledge. PEX pipe is also very easy to connect.

Only by pressing the two ends together does one become connected to the other. You can connect the crimp fitting to this pipe using the crimp tool. On the other hand, you can easily connect the clamp fittings using the clamp tool in the same way.

High Heat Tolerant Capacity

High Heat Tolerant Capacity

PEX pipes can supply high heated water. It is capable of withstanding heat up to a maximum of 200 degrees Fahrenheit. On the other hand, if it gets too cold or snowy, the water in the copper pipes freezes. As a result, the flow of water is disrupted.

But this does not happen in PEX pipes because it is flexible enough and can be stretched as needed, so the water in the PEX pipe does not freeze and can flow smoothly.

What Are The Disadvantages Of PEX Pipe?

What Are The Disadvantages Of PEX Pipe

PEX pipes have many advantages as well as disadvantages. If you use PEX pipe by these bad aspects, it will be value for money for you.

Not Suitable For Outdoor Use

Not Suitable For Outdoor Use

PEX pipes are made for indoor use only. If you use it indoors, it will not withstand the extra heat (cold or hot) outside and will spoil prematurely.

Cannot Be Recycled

Cannot Be Recycled

Another disadvantage of PEX pipes is that you cannot recycle them. It means that the pipe you use once can no longer be used for any other purpose.

Cannot Be Connected Directly To Water Heater

Cannot Be Connected Directly To Water Heater

You cannot connect a PEX pipe directly to your water heater because it is made of cross-linked HDPE material. In that case, you need to connect a copper or PVC pipe to the water heater of about one to one and a half feet. You can then connect the PEX pipe to that pipe.

How To Install PEX Pipe In Concrete?

How To Install PEX Pipe In Concrete

Installing PEX pipes inside concrete is not a very difficult task. You can easily install PEX pipes under the concrete slabs of your home by following a few simple steps.

Step 1

Before installing PEX pipes, determine the loop circuit and prepare the length of pipe required. It is best if you install a PEX pipe near the manifold. However, many times the manifold may have to be moved slightly in case of some need. With this in mind, you can install it at a distance of one to one and a half meters between the manifold and the pipe.

Step 2

Now slowly open the twisted pipes. You can tie the pipes with a zip tie or this kind of flexible plastic bracket to prevent it from getting messy. However, it would be best if you remembered not to tie the pipes with any metal. It can damage the pipes and cause holes.

It is best to do this together. One will slowly open the coil of the pipe, and one will continue to install the pipe. But for one, the process becomes a bit of a hassle. In that case, you can use a PEX uncoiler, although using this tool is a bit expensive. A typical uncoiler costs between 250 and 300 dollars. On the other hand, buying a professional level uncoiler can cost from 450 to 500 dollars.

Step 3

If you need to bend somewhere when installing the pipe, use the PEX bend in that place. This tool allows you to bend the pipe up to 90 degrees. When you reach the end, cut the pipe by leaving an extra part of about one and a half meters with the pipe.

Step 4

Now you have to test each pipe. Open each circuit connected to the pipe. However, keep the main shut-off valve of the radiant manifold closed. Attach the pressure testing tool to the compression hose adapter or Schrader valve. Now test the pressure for about 30 minutes. Keep the pressure between 40 and 100 psi during the test.

Step 5

If you see that everything is fine, then you can start the process of concreting. However, it would help if you kept the pressure of the pipe on while concreting. If there is a leak somewhere in the pipe in any order, it will be easily understood for the concrete mixture. Bubbles will form in the concrete mixture where the pipe has leaked. Then use fittings to heal that leak. Then complete concreting normally.


If you want to do plumbing in concrete in your home, then using PEX pipe would be the wisest thing to do. Due to this pipe’s low cost, high flexibility, and user-friendly features, it has become very popular among both professionals and non-professionals. Even non-professionals can easily do their chores with this pipe.

It would be better to use PEX pipe instead of metal pipe for plumbing in the middle of the concrete. When you want to replace your home water supply pipe, you can remove the PEX pipe without breaking the concrete in your home. But if there is a metal pipe, there is no opportunity to do so.

It would be best if you broke the concrete then removed the metal pipe. Therefore, considering all aspects, PEX pipe is preferable and acceptable to the metal pipe for plumbing in concrete flooring. I hope now you know about can PEX be buried in concrete or not.

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