Wood flooring is the most expensive material in the renovation of citizens' homes, and usually accounts for about 15% of the total renovation. How to choose a floor with a guaranteed quality is a concern of many decoration owners. To this end, the newspaper specially invited the relevant experts of the Municipal Building Materials Industry Association to introduce various wooden floor buying techniques. In this issue, we will introduce solid wood flooring and solid wood composite flooring. In the next issue, we will introduce laminate flooring, cork flooring and bamboo flooring. wooden floor First, the tree material wood floor There are many kinds of trees that can produce flooring, precious rosewood and teak; general maple, eucalyptus, ash, and gamut; cheap pine, pine, etc., the price difference is very large. The misleading tree species in the market is very common. Consumers can check the common commercial name of the common wood flooring issued by the China National Forest Products Industry Association Floor Committee, or pick their favorite tree species, texture, color, and choose the color palette as much as possible. Select the dyeing board and try to select the stable tree species to avoid scooping, twisting, bending, cracking, arching, ringing, etc. during the long-term use of the wood floor. Second, choose the size The solid wood flooring currently available on the market is of a long and wide gauge, such as 900 mm × 90 mm × 18 mm. In fact, the wooden floor should be short and not too long. It should be narrow and not wide. The floor should be less than 600 mm × 75 mm × 18 mm. The smaller the size, the stronger the resistance to deformation. If you prefer long, you can use the grounding plate, up to 4000 mm, like the wide optional floor, up to 220 mm: the back of the wide floor should have anti-deformation grooves, the groove depth should be more than one third of the thickness of the floor. . If it is used for floor heating floors, it should be thin and not thick, generally between 8 mm and 12 mm. Third, choose the moisture content of the wooden floor Moisture content is critical. The moisture content of the purchased floor must be consistent with the local equilibrium moisture content. The floor area must be measured for moisture content. If the seller does not have a moisture meter, it will not buy its board. The method for determining the equilibrium moisture content is very simple. Firstly, the moisture content of the purchased varieties is measured in the exhibition hall, and then the moisture content of the wood flooring of the purchased varieties is checked out of the box. If the moisture content of the two is only 1% to 2%, it is a qualified product. Fourth, the selection of processing accuracy Use 10 pieces of floor to assemble on the flat floor, touch it by hand, see if the processing quality is accurate, the smoothness is smooth and smooth, and the assembly of the groove, the groove, the anti-deformation groove, etc. are tightly combined. Fifth, select the quality of the substrate Check the floor level for any wood defects such as insect eyes, cracking, decay, blueing, and dead knots. For small joints, the color difference can not be too demanding, this is the natural property of wood. As for the natural texture of wood, most of them are string cut surfaces, and a small part is the diameter cut surface. If they all have the same cut surface, it is difficult to reach in solid wood floor. Unless it is a veneered veneer. Sixth, choose paint quality Lacquered, roller paint floor, commonly known as paint board. Whether it is bright or matt lacquered floor, it should be observed whether the paint film on the surface of the lacquer plate is uniform, full, smooth and leak-free, blistering, perforating. Among them, the need to put forward is the wear resistance, it is recommended to purchase UV light-curing coating, the market distributor referred to as UV lacquer board, its wear resistance, burning resistance and other properties are better than other finishing processes. Burning with a cigarette butt for 20 seconds will not leave a trace. First, the appearance quality of the floor 1. The surface paint is painted with luster, whether the paint film is full and even, with or without needle-shaped, with or without indentation and scratching. 2. Whether the surface material has obvious defects. There should be no defects such as decay, dead knots, knot holes, wormholes, cracks, and skin. 3. The surrounding rafts and troughs are complete. Second, the product dimensional tolerance 1. The specifications of the product are the same as the tolerance, length and width of the product. 2. Whether the splicing and size splicing of the product is strict and flat. You can check the multi-layer floor and assemble it on a flat glass countertop or floor to see how it fits tightly and whether the surface is flat. Third, the inherent quality of the floor Intrinsic quality is a key indicator of various wooden floors, but it is difficult to determine by intuition. It must be tested. Therefore, it is necessary to observe its test report. The contents are as follows: 1. Formaldehyde emission China has stipulated that the concentration of formaldehyde in the air of public places should not exceed 0.12 mg / m3: If the smell of formaldehyde is already smelled during the laying process, the concentration of formaldehyde in the air has exceeded the standard. For the determination of formaldehyde concentration in products, China currently mainly uses perforation extraction. The resulting "perforation value" indicates the amount of releasable formaldehyde contained in 100 g of the product. If the "perforation value" is around 9 mg / 100 g or less, it can basically meet the national environmental protection standards for formaldehyde concentration. If it is 30mg / 100g or less, it generally also meets the Class B technical standard. 2. Moisture content The water content is usually about 12%, which is basically qualified (different regions, different water content standards are implemented).
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