Myth 1: The thicker the dough, the better.
Some consumers in the purchase process of floor heating floor, blindly pursue the thicker layer of solid wood composite floor as much as possible, the wider the floor, the better, the longer the floor, the better. In fact, the thicker the multi-layer solid wood flooring, the more obvious the characteristics of the solid wood flooring. In the process of environmental change, the stress generated by the surface of the floor during shrinkage and swelling is greater, and the chance of floor deformation and cracking of the dough increases. The wider the multi-layer parquet, the larger the gap created during shrinkage. Similarly, due to the expansion and contraction of the multi-layer parquet in the length and width directions, the longer the multi-layer parquet, the larger the gap created by the floor ends during shrinkage.
Therefore, the surface of the multi-layer composite floor used for geothermal heating should not be too thick. The geothermal floor coverings in Korea and Japan are mostly 0.3mm, and most of the companies in China produce 0.6mm. The standard surface layer produced by the living households is 0.6mm. It is one of the types that is very suitable for floor heating, and is very popular in the north where geothermal use is frequent. If a thick solid skin (3~4mm) multi-layer solid wood floor is used as the geothermal floor, the width of the floor is below 70mm or the humidity of the environment can be effectively controlled, and the deformation of the board surface can also be reduced. The following figure shows the different deformations when the floor width is 125mm and the thickness is 4mm, 3mm and 2mm respectively.
Myth 2: The best groove on the back of the floor
Some people think that the geothermal floor backplane is well grooved, which is conducive to the flow of hot air and even makes the floor backboard into a hollow structure. In fact, the conduction rate of heat in solids is faster than that of gas. The higher the density, the faster the heat conduction rate, which is one of the reasons why we increase the density of floor substrates. The back surface of the ground surface is longitudinally slotted, and an air layer is formed at the slot at the back of the floor. Since the heat conduction speed of the air is lower than the heat conduction speed of the wood, the heat conduction effect is reduced.
Misunderstanding 3: Dampproof membrane is best for diathermy
Some floor installation companies do not have a sticky joint at the moisture barrier when installing the floor. Some installation companies even cut the moisture barrier into many small openings for the purpose of ventilation and improved heat transfer. Generally speaking, after the geothermal project is made, the water content in the ground cement is at least 17%. During the geothermal heating process, the moisture on the ground is continuously radiated outward, and the damaged moisture-proof membrane directly acts on the back of the floor, causing the floor to stratify. Drum kit and fryer. In addition, in the late heating period in winter, due to excessive reduction of moisture in the ground, the heat transfer rate of the ground is slowed down, resulting in too low room temperature. Therefore, we should not only cut the moisture-proof membrane into many small mouths, but also stick the moisture-proof membrane with plastic tape to ensure airtightness. This not only avoids the damage of the moisture in the ground to the floor, but also keeps enough moisture in the ground to ensure the heat conduction effect in the late heating period in winter.
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