How to Insulate Underground PEX Pipes

PEX floor heating pipe is a kind of pipe specially used in floor heating systems. It is widely used and many people think it is better than other pipes, the following are its advantages.IFAN Facebook,IFAN factory has 30+ years manufacture experience supporting color /size customization support Free Samples.

Advantages :

Easy to install

PEX floor heating pipes can be easily installed on the ground or under the floor. Installers only need to cut and bend pipes to fit the shape of the room without welding and connecting, reducing installation difficulty and time.

Low cost

The production cost of PEX pipe is low, so the use of PEX floor heating pipe can significantly reduce the installation and operation expenses. In addition, due to its low thermal conductivity, PEX pipes can achieve high thermal efficiency under the condition of heat preservation, saving energy and money.

Corrosion resistance

Made from high-density polyethylene, PEX pipe will not corrode or rust, so it will last for decades.


PEX pipes can withstand extreme temperatures and can be used in an environment of minus 40 degrees, avoiding the problem of freezing and cracking of pipes.


Because the PEX pipe is harmless to water quality, and the inner wall is smooth, it will not be easily adhered to by substances, thus ensuring the sanitation of hot water and reducing the frequency of pipeline maintenance.

In short, PEX floor heating pipes have the obvious advantages mentioned above. It is gradually widely used in floor heating projects, creating a more comfortable indoor temperature environment for homes and commercial places.

Underground PEX pipe is a relatively common pipe material, and it often needs to be insulated for underground use. For the insulation treatment of underground PEX pipelines, we can consider the following aspects:

Selection of insulation materials

The insulation material of the underground PEX pipeline should have a certain thermal insulation performance and also need to have a certain compression resistance and corrosion resistance. Common insulation materials include EPS polystyrene board, XPS extruded board, polyurethane foam board, etc. These insulation materials have good insulation performance and compression resistance and can prolong the service life of underground PEX pipelines.

Construction and installation of insulation materials

During the insulation process of underground PEX pipelines, attention should be paid to the construction and installation of insulation materials. First of all, it is necessary to clean the underground pipeline, remove the sundries and dust on the surface of the pipeline, and ensure that the insulation material is firmly pasted. At the same time, special attention should be paid to the compactness and uniformity of the insulation layer during the construction of the insulation material to ensure the insulation effect.

Wrap closure of pipes

After the insulation treatment of the underground PEX pipeline is completed, the pipeline needs to be wrapped and sealed. Lay a layer of sand or gravel around the pipeline, which can play the role of waterproof, anti-seepage, drainage, etc., and can also prevent the pipeline from being damaged by the outside world.

The surrounding environment of the pipeline

In the surrounding environment of the pipeline, it is also necessary to pay attention to the waterproof and anti-seepage performance of the insulation material. Measures such as anti-seepage film and drainage pipes can be used to ensure the thermal insulation effect of underground PEX pipes.

To sum up, the insulation treatment of underground PEX pipelines is a relatively important issue, which requires us to take it seriously. Attention should be paid to the selection of pipelines, the construction and installation of insulation materials, the wrapping and sealing of pipelines, and the surrounding environment of pipelines to ensure the operation and use effect of underground PEX pipelines.



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