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Why Should You Choose Extruded Polystyrene Board for Underfloor Heating-Feininger

Views: 69     Author: Site Editor     Publish Time: 2023-05-11      Origin: Site

Feininger Extruded Polystyrene Board for Underfloor Heating

Feininger Extruded Polystyrene Board for Underfloor Heating

Extruded polystyrene board is suitable for underfloor heating for several reasons:

Heat Resistance

XPS is able to withstand high temperatures, which makes it ideal for use with underfloor heating systems. It can withstand temperatures up to 75°C without losing its shape or structure.

Low Thermal Conductivity

XPS has a low thermal conductivity, meaning it is an excellent insulator. This property makes it suitable for use in underfloor heating systems, where it helps to prevent heat loss and retain heat within the room.

Resistance to Moisture

XPS is highly resistant to moisture, making it ideal for use in underfloor heating systems, where it helps to prevent moisture from seeping into the system and causing damage.

The features of high-quality Extruded Polystyrene Board for underfloor heating

  1. High Thermal Resistance: XPS boards should have a high R-value (thermal resistance) to minimize heat loss from the floor. A higher R-value means the board will provide better insulation and reduce the energy required to maintain the temperature.

  2. Compressive Strength: The XPS board must be strong enough to support the weight of the flooring and furniture without compressing or deforming. A minimum compressive strength of 300 kPa is typically recommended.

  3. Low Water Absorption: XPS boards should have low water absorption to prevent moisture from penetrating the floor and damaging the insulation. A maximum water absorption rate of 0.2% by volume is usually recommended.

  4. Easy Installation: The XPS board should be easy to cut, shape, and install. It should also be lightweight and easy to handle to make the installation process more efficient.

  5. Environmentally Friendly: Look for XPS boards that are free from harmful chemicals and are made from recycled materials. This will help reduce the environmental impact of the installation.

high-quality Extruded Polystyrene Board for underfloor heating

Why Feininger is your best choice?

We are a professional Chinese xps board manufacturer. We have a mature production line and XPS board production factory and an experienced research team for R&D.  Many buyers have difficulty selecting high-quality xps boards in the market. We have confidence in the advantages of our XPS board for underfloor heating. There are four reasons why our product is worth choosing.

  1. Appearance: The reason why Feininger XPS boards come in different colours is that masterbatch is added during the production process. The purer the colour, the better the quality of the board. Dull colours are inferior and boards with colours closer to black are worse (except for graphite XPS boards).

  2. Smell: Low-quality XPS boards have a strong plastic smell, which may indicate that harmful substances are being released from the materials used to make the board. The best-quality boards have a very faint smell.

  3. Texture: When pressing with your fingers, low-quality XPS boards will leave visible dents. These boards have a lower load-bearing capacity. High-quality boards have a density of at least 33 kg/m³ and are able to resist compression with elasticity. Feininger dry underfloor heating board is composed of high strength XPS extruded board and aluminum film heat soaking layer attached to its surface. The floor heating plate is prefabricated in the factory and assembled on site, with grooves with fixed spacing on the surface for laying heating pipes.

  4. Combustibility: XPS boards are often used as building insulation materials for exterior walls and roofs. They are classified according to their flame-retardant properties, with B1 (hard to ignite), B2 (flammable), and B3 (easily flammable) levels. XPS insulation boards used for underfloor heating are placed underground and have low combustibility requirements. Therefore, it is recommended to choose B2-level XPS insulation boards for cost efficiency.

Easy to Install Extruded Polystyrene Board for Underfloor Heating

Installing XPS for underfloor heating is a simple process that can be completed in a few steps:

Step 1: Clean the Subfloor

Before installing XPS, the subfloor must be thoroughly cleaned and free of any debris or dust. This helps to ensure that the XPS boards adhere properly to the subfloor.

Step 2: Measure and Cut the XPS Boards

Measure the dimensions of the room and cut the XPS boards accordingly to fit the space. It is important to leave a gap of around 10-15mm between the edge of the XPS boards and the wall to allow for expansion.

Step 3: Lay the XPS Boards

Lay the XPS boards onto the subfloor, ensuring that they fit tightly together and there are no gaps between them. If necessary, use an adhesive to secure the XPS boards to the subfloor.

Step 4: Install the Underfloor Heating System

Install the underfloor heating system on top of the XPS boards, following the manufacturer's instructions carefully. It is important to ensure that the heating pipes or cables are laid out in a consistent and even manner across the entire surface area of the XPS board.

Step 5: Cover the Heating System

Once the underfloor heating system is installed, cover it with a suitable floor covering, such as tiles or hardwood flooring. The floor covering should be chosen based on its ability to transfer heat efficiently and evenly.

Feininger Dry Underfloor Heating System

Dry Underfloor Heating System 1Dry Underfloor Heating System 2Dry Underfloor Heating System 3Dry Underfloor Heating System 4

Standardized construction of feininger underfloor heating system

Preparing work

  • Ground flatness check.

  • Step position elevation check.

  • Is the line slot of the temperature controller unobstructed?

  • Check whether the water supply return pipe of the water collector is unobstructed and whether the joint is complete.

Construction work

  • Grass-roots cleaning.

  • Laying Farninger dry floor heating board.

  • Install the water collector and connect the supervisor.

  • Install heating pipe.

  • Install wooden flooring / tiles.

  • Install heat source and debug.

  • Install the temperature control board.

  • Pipeline pressure test.

How to choose the thickness of Extruded Polystyrene Board for Underfloor Heating?

The specifications of the extruded board will vary according to its own use. the commonly used specifications of the extruded board are 1200m600 and 2400001200, and can also be customized for processing, production and cutting according to customer requirements.

The thickness of external wall thermal insulation extruded board is usually divided into 10mm and 100mm.

The error should be less than or equal to 2 mm, and the thickness error above 5 cm should be less than 3 mm; the size of qualified extruded insulation board is very standard, for example, the length and width of 2.4 m long and 0.6 m wide board is standard.

  1. Before laying the extruded board, you should brush the interface agent on the side of the adhesive paste and leave it to dry for 20 minutes before use.

  2. The extruded board should generally be laid horizontally, laying from bottom to top, the width of the wrong seam is 1 stroke and 2 board length, and appropriate cutting should be carried out when necessary.

  3. Spread a layer of bonded polymer glue around the extruded board evenly, smear the width of 50mm, thickness 10mm, and leave a wide exhaust hole of 50mm on one side of the board, the middle part adopts point sticking, diameter is 100mm, thickness 10mm, center distance 200mm.

For the standard board of 1200mm × 600mm, there are 8 points in the middle, and for the non-standard board, the area of the glue applied to the extruded board should not be less than 30% of the total area of the board. The side of the board shall not be glued.

About us


Feininger is a "national high-tech enterprise", the chairman unit of XPS Association of China Plastics Association, a member unit of the National Plastics Standardization Technical Committee, a national-level three-star green building materials certification enterprise, and a national industry standard-setting unit.

Feininger has established the Engineering Technology Research Center of Polymer Physical Foaming Materials in Jiangsu Province, and has been rated as one of the top 10 extruded board enterprises in China by the Ministry of Light Industry of China for many years.

Feininger has passed ISO9001:2015, ISO14001:2015, ISO45001:2018 and strict FM certification and CE EU product standard certification. In 2016, Feininger won the United Nations "Ozone Layer Protection Recognition" honorary certificate.

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Hello, I am Tina, the proud founder of a China leading company specializing in XPS Foam Board Production Lines. With a visionary approach, I established this venture to address the evolving needs of the insulation and construction industries.
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