Five misunderstandings and solutions for using floor heating floors

In recent years, the use of floor heating systems has become increasingly popular, making geothermal flooring a common feature in many homes. However, with this growing trend comes a number of misconceptions that consumers often fall into when purchasing flooring for geothermal applications. Experts from professional associations, such as the Furniture Association Floor Committee and renowned floor culture centers, have addressed these common misunderstandings to help buyers make informed decisions. **Myth 1: All floors are suitable for underfloor heating** Many sales representatives may confidently tell customers, “There’s absolutely no problem—we sell floors for underfloor heating.” As a result, customers often assume that any type of flooring can be used for this purpose. **Expert Insight:** Underfloor heating works by placing heating pipes beneath the floor, which then radiate heat evenly throughout the room. Therefore, not all floors are appropriate. Special underfloor heating flooring must meet strict standards: high substrate density, strong internal bonding, and a water absorption thickness expansion rate of less than or equal to 2.5%. This ensures the floor remains stable and doesn’t crack or warp at high temperatures. Additionally, formaldehyde emissions should be low, as higher temperatures increase the release of harmful substances—especially in enclosed spaces during winter. **Myth 2: Thicker floors provide better insulation** Some customers believe that choosing a thicker wooden floor will improve warmth and comfort. However, this is a misconception. After installation, they may find that their home isn’t as warm as expected. **Expert Insight:** Wood is a poor conductor of heat, so even thick floors can lead to heat loss as the warmth travels through the material. The temperature difference between the top and bottom of the floor can cause deformation, leading to warping or cracking. To minimize heat loss, it's recommended to use laminate flooring around 8mm thick. Also, when heated, moisture evaporates quickly, increasing the risk of gaps forming. Experts suggest using smaller tiles or planks to ensure even heating and reduce stress on the floor. **Myth 3: No pressure test before installing the floor** Some homeowners assume that once the underfloor heating system is installed, everything is set. However, without a proper pressure test, hidden issues can arise later. **Expert Insight:** Before laying the floor, it's crucial to perform a pressure test. Fill the pipes with water, increase the pressure to the required level, and keep it for over 30 minutes to check for leaks. If the vent valve on the manifold is open and no water is leaking, the system is likely safe. If not, a second pressure test should be conducted before proceeding. **Myth 4: Skipping environmental testing after installation** To speed up the move-in process, some customers skip environmental testing after the floor is installed, thinking it's unnecessary. **Expert Insight:** Since most underfloor heating floors are composite materials, they can emit formaldehyde, especially when heated. It’s essential to conduct environmental testing to ensure that formaldehyde levels are within the national standard (1.5mg/L) to protect the health of the occupants. **Myth 5: Using furniture without legs on the floor** Some homeowners place heavy furniture, like beds without legs, directly on the floor. This can lead to distortion or damage over time. **Expert Insight:** When using underfloor heating, avoid placing legless furniture or fixed structures on the floor. These items block the natural circulation of heat, reducing efficiency and causing the floor to retain too much heat, which can lead to warping or deformation. Always ensure there is space for air to circulate beneath furniture to maintain optimal performance and longevity of the floor.

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