"I recently planned to buy wooden flooring. When I went to the mall to buy, I found that some wooden floors were attached to the special words of floor heating. The shopping guide said that if the house is to be warm, it should be attached to this kind of wooden floor. The floor heating is only a concept of speculation or really such a wood. Floor?†Recently, reader Qiu called to consult.
In the past two years, the floor heating floor has risen rapidly. The reporters of the Huashang Daily visited the market and saw some wooden floor stores labeling the “floor heating specialâ€. However, many consumers are still very vague about the concept. What kind of material should be used for the floor heating floor? What are its performance requirements? In response to this question, the Huashang Daily reporter conducted a field interview.
Multi-layer solid wood flooring can be specially treated to be truly ""warm heating"
The traditional wooden flooring is mainly composed of laminate flooring, solid wood composite flooring and solid wood flooring, which can meet the paving requirements. Since the floor heating has become an important heating method in recent years, the floor heating has high requirements on the water content and stability of the floor. Therefore, the multi-layer solid wood floor has become the first choice for the floor heating floor. Due to its “well-shaped†structure, the multi-layer solid wood has the expansion joints with thermal expansion and contraction, which has stable performance and overcomes the shortcomings of natural materials. It is frequently used in geothermal heating and decoration.
Wang Yu, general manager of Jiuya Flooring, said that although there is no special plate for geothermal on the market, from the characteristics of geothermal heat, the floor heating floor must have three characteristics: good stability, deformation resistance, good heat conduction effect, and wood moisture. The rate is lower. From these three points of view, multi-layer solid wood flooring is the most suitable.
Pure solid wood is made of raw wood. The texture and structure of the wood are oriented in one direction. The moisture content is not well controlled. It is easily deformed by high temperature for a long time. The reinforced composite board is a MDF. The higher the density, the better the heat conduction effect. It is an artificially constructed sheet, which is easy to swell and shrink. The multi-layer solid wood board wood fibers are horizontally and vertically staggered, superimposed on each other, and the internal forces are not easy to be deformed by pulling each other. The water content of the material is below 12%, the expansion rate is low and the performance is stable, which is suitable for the drier climate in the northwest.
Although multi-layer solid wood flooring can be used for geothermal heat, it is necessary to do some special treatment to truly label the "floor heating". For example, the surface of the board and paint should be anti-aging to prevent paint from falling off and cracking wood at high temperatures. A polyester non-woven pinhole heat permeable pad is added to the back of the floor to ensure thermal conductivity and moisture resistance.
Floor heating floor thickness should be between 12-15 mm
Huashang Daily reporter visited the market and found that the multi-layer solid wood flooring has 3, 5 or even 7 layers, and the thickness of the layers is not very different. Can these multi-layer solid wood floors of different thickness be used for geothermal heat?
Zhang Yan said: "The floor heating is to transfer heat through low temperature, and the wood fiber hole has the function of heat insulation. Therefore, the floor should not be too thick." Zhang Yan said, "In general, consumers will think that the thicker the floor, the more Ok, but for floor heating floors, it should be “choose thin and not thick.†After all, wood itself is a poor conductor of temperature, there must be loss in the process of heat conduction, when the thickness exceeds 15 mm, it is difficult to reach the surface of the floor. However, the thickness should not be less than 12 mm, because the temperature of the floor heating pipe will be as high as 40 or more, and the wood is too thin to be easily cracked."
It is understood that in order to effectively conduct heat and prevent the temperature on the back of the floor from being too high, the floor heating floor will open a heat conduction groove behind the board, which is conducive to the flow of hot air and helps the wood floor to conduct heat. In order to evenly heat the floor, not only the thickness of the floor should be well mastered, but also the construction ground must be dry and level when paving, in line with national or local building acceptance standards. The more flat the floor of the wooden floor is, the better the heat conduction effect will be. At the same time, there should be expansion joints when paving to prevent the floor from swelling and shrinking. Before the floor heating, the selected moisture-proof pad should not be too thick, preferably within 3 mm. Excessive thickness will hinder heat conduction.
Floor heating floor installation without glue
In the case of floor heating, consumers are not only worried about the damage of the wood floor material, but also worry that the high formaldehyde content will increase the formaldehyde content. Therefore, the floor heating floor is designed with a special lock to distinguish it from ordinary wooden floor. Wood has the characteristics of thermal expansion and contraction. Some wooden floors are glued with special glue when laying, but the floor heating temperature itself is high, and the glue will release harmful gases. Therefore, the floor heating wood floor will adopt the locking technology, the interlocking ring will increase the pulling force, no glue is applied, the harmful gas will not be released, and the disassembly is convenient.
The quality and safety of doors, windows and curtain walls comes from professional, rigorous, scientific and good design. For the current novel and large curtain wall forms required by some architects, it also brings a lot of confusion and trouble to the curtain wall company, some new and complicated. The curtain wall structure system has been hurriedly applied to the project without reasonable test and technical demonstration, which brings uncertain factors to the safety of the curtain wall project; there are also some safety problems caused by excessive use of the oversized glass plate.
For example, in Chongqing, a super high-rise glass curtain wall, the largest single block area is more than 8 square meters, and there are more than 100 pieces of glass broken image; and the largest piece of semi-hidden frame glass curtain wall project in Chengdu, one of which is the largest one. The block area is also nearly 7 square meters. After many evaluations, the solution is finally modified before the glass is ordered. A partition is added to make the glass size return to a reasonable range and meet the corresponding specifications. Therefore, the professional designers of the curtain wall should improve their technical level and familiar with the relevant normative standards. For some unreasonable requirements, they should have a clear technical point of view, take appropriate countermeasures, and it is necessary to pass some test verification and technical demonstration. Wait for technical support to ensure the reliability and safety of the final curtain wall project.
The door and window curtain wall is a building product composed of various building materials processing, which constitutes various materials (glass, profile, glue, hardware, etc.) in the door and window curtain wall. It is completed and embodied through standard processing and construction combination. All kinds of materials are excellent products, in order to finally achieve the high quality and safety of the door and window curtain wall, in order to have an engineering and social environment that can be safely used safely.
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