1. "Where is the floor suitable for underfloor heating?"
For underfloor heating, the flooring must meet four key criteria: thermal conductivity, dimensional stability, resistance to soiling, and environmental safety. The flooring industry has been working on developing standardized guidelines that quantify these factors and establish warranty periods for different types of floor coverings. These standards also help define technical requirements for installation and maintenance, ensuring better performance and longevity.
2. "Is the term 'geothermal floor' accurate?"
Terms like “heat-resistant floor,†“geothermal-resistant floor,†or “heat-tolerant floor†are often used, but many of them lack scientific accuracy. Common names such as “heating floor,†“floor heating floor,†“geothermal floor,†or “dedicated geothermal floor†are widely recognized. However, in early development stages, it's important to standardize terminology. A more precise definition would be: a wood floor designed specifically for use in a radiant floor heating system, which transfers heat efficiently through its surface into the living space.
3. "Does a thicker floor provide better insulation?"
Wood is a poor conductor of heat. If the floor is too thick, it can actually hinder heat transfer from the subfloor to the surface, causing heat loss during conduction. Additionally, thick floors may experience greater temperature differences between layers, leading to excessive expansion and contraction. This can result in warping, cupping, twisting, or cracking, reducing the floor’s dimensional stability.
4. "Are geothermal floors too wide in size?"
Since flooring is prone to swelling and shrinking due to humidity changes, especially when heated, oversized boards are more likely to cause gaps or separation. To avoid this, experts advise consumers to choose appropriately sized flooring for geothermal systems.
5. "Is an aluminum film mat necessary for underfloor heating?"
In a radiant heating system, heat is primarily transferred by radiation, followed by convection and then conduction. If an aluminum foil is placed beneath the floor, it can block radiation, causing the surface to remain at a similar temperature. The foam pad in the film has high thermal resistance, while regular foam pads have lower resistance, affecting heat efficiency.
6. "Can I add plywood or particleboard underneath the floor?"
Using additional substrates like plywood or particleboard is not recommended. These materials can introduce moisture issues, reduce thermal conductivity, and even lead to structural problems over time. It’s better to avoid adding unnecessary layers under the floor.
7. "Is suspension the only way to install the floor?"
Traditionally, underfloor heating systems required suspended installation because nailing into concrete was difficult. However, with modern technology, some keel systems now allow air to circulate beneath the floor, improving heat distribution and reducing deformation. This method also increases thermal efficiency and ensures more even heating in the room.
8. "Is there a test for underfloor heating before installing the floor covering?"
Before finalizing the floor covering, it’s essential to conduct a test for underfloor heating. This ensures that the system functions properly and that the floor is compatible with the heating setup.
9. "Is the floor environmentally safe after installation?"
Once installed, geothermal flooring can increase the release of formaldehyde when heated. Therefore, it’s crucial to perform an environmental protection test after installation to ensure that the level of free formaldehyde meets the national standard of 1.5mg/L.
10. "Avoid placing furniture or carpets directly on the floor without legs."
Large pieces of furniture or carpets placed directly on the floor can block heat dissipation, leading to uneven heating and potential deformation. This not only wastes energy but also reduces overall room temperature. It’s best to leave space for proper heat circulation and maintain even temperature distribution.
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