XPS Insulation Board for Heating Mats — The Foundation of Modern Underfloor Heating

Underfloor heating is becoming a standard in modern construction, both in single-family homes, apartments, and commercial buildings. Its effectiveness and user comfort largely depend on the proper preparation of the substrate. A key element is the XPS insulation board — an advanced material that combines insulating, stabilizing, and protective functions.

Characteristics of the XPS Insulation Board

XPS Board (extruded polystyrene) features a closed-cell structure, which provides exceptional resistance to moisture and excellent thermal insulation properties. The boards available in thicknesses of 6/12/20/30 mm offered by Termofol are lightweight, easy to work with, and quick to install. Due to their high mechanical strength, they can be used in demanding conditions, even in areas exposed to heavy use.

Applications of XPS Board – More than Just a Base for Tiles

XPS Insulation Boards have a wide range of applications as a base for ceramic tiles, vinyl panels, laminate, and wooden floors. They are used in bathrooms, kitchens, hallways, living rooms, as well as in commercial spaces such as hotels, spas, gyms, or offices, where durability and moisture resistance are essential. XPS boards can also be used as additional insulation elements for walls, ceilings, or terraces, improving the overall energy efficiency of the building. They are utilized in lightweight construction systems, for building shower cabins, and for insulating balconies and loggias. Additionally, XPS boards effectively eliminate thermal bridges and minimize heat loss.

Benefits of Using XPS Construction Board Under Heating Mats

1. Thermal insulation — the XPS board acts as a barrier against heat loss, ensuring that all energy is directed into the room.
2. Energy efficiency — reducing losses helps lower heating bills and increases the efficiency of heating mats.
3. Moisture resistance — the board does not absorb water, making it ideal for wet areas.
4. Stability and reinforcement of the substrate — it provides a level surface, which is crucial for the proper functioning of the heating system and the aesthetics of the finish.
5. Ease of installation — simple processing, low weight, and quick installation reduce project completion time.

The Importance of Insulation in Underfloor Heating Systems

Choosing the right insulation for heating mats is an investment in comfort and savings. XPS Construction Board Termofol limits heat penetration downwards, allowing for faster heating of the floor and even temperature distribution. As a result, the heating system operates for a shorter time, and the user experiences pleasant warmth more quickly and efficiently.

Technology and Longevity of the System

Using XPS Insulation Board extends the lifespan of the entire underfloor heating system. It protects heating mats from mechanical damage and moisture, which is crucial in high-humidity areas. Furthermore, it eliminates the risk of unevenness and cracks in the finishing layer.

Modern Construction and Ecology

Investing in XPS insulation is also a step towards energy-efficient and eco-friendly construction. Lower energy consumption means reduced CO2 emissions and a real impact on environmental protection. XPS Boards are produced using environmentally friendly technology, which further enhances their value.

Installation Method

• Adhere the TERMOTERM insulation board to the substrate (concrete, reinforced concrete, or OSB board). The adhesive should be evenly spread over the entire surface of the board using a notched trowel. The adhesive used to attach the board should be flexible, and the board must tightly adhere to the substrate.
• Lay the boards staggered by half their length.
• Secure the joints of the boards with a 5 cm wide fiberglass mesh, embedding the mesh in flexible adhesive. This guarantees the absence of thermal bridges.
• The insulated substrate according to the above instructions serves as the base for installing underfloor heating with a heating mat.
• On the TERMOTERM board, layers of flooring should be laid using flexible adhesive.

XPS Insulation Board under heating mats is a solution that elevates the standard of any underfloor heating system. It combines the benefits of thermal insulation, stability, and moisture protection, creating a solid and durable base for tiles, panels, or stone. By choosing XPS Construction Board, we invest in higher user comfort, energy savings, and safety for years to come.