When selecting a flooring system for underfloor heating, it's crucial to choose the right type of floor. In Japan, there are strict regulations regarding whether a floor is suitable for underfloor heating or not. It’s important to note that floors not designed for underfloor heating should never be used in such systems. While many wood floors on the market may appear to be compatible, not all are actually suitable for long-term use with underfloor heating. Many factory technicians have little to no experience with this technology and may not fully understand how it works. Unfortunately, some of them still claim they can install underfloor heating without proper knowledge, which can lead to serious issues down the line.
It's true that some non-underfloor heating floors might work for a short period, but if you're planning to use your floor for more than two or three years, it's definitely not the best choice. Most customers expect their flooring to last over ten years, so choosing the right material for underfloor heating is essential.
Another important factor to consider is the thickness of the floor. Underfloor heating relies on low-temperature radiant heat transfer, and the natural structure of wood fibers can act as an insulator. If the floor is too thick—over 14 mm—it becomes difficult for the heat to reach the surface efficiently. This results in poor heat distribution, reduced energy efficiency, and higher operating costs. On the other hand, if the floor is too thin, it won't store enough heat, leading to temperature fluctuations in the room.
The thermal resistance coefficient of the floor is also critical. A higher thermal resistance means better heat retention but worse heat transfer. Therefore, it's important to select a floor with a moderate thermal resistance value to ensure both efficient heat transfer and good heat storage.
Additionally, the climate and environmental humidity of the installation location should be taken into account. In areas with high humidity, it's wise to choose a flooring material with a low deformation coefficient to prevent warping or cracking over time.
Lastly, the floor surface must be resistant to cracking. Underfloor heating involves continuous cycles of heating and cooling, which can stress the floor over time. Without proper anti-cracking properties, cracks and other structural issues may develop quickly, compromising both the appearance and durability of the floor.
By carefully considering these factors, you can ensure a safe, efficient, and long-lasting underfloor heating system that meets your needs and enhances your living space.
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