Green paint, green floor, and healthy furniture... Miss Zhu's new home is covered with large and small “green labelsâ€, and it is sure that the just-concluded decoration is definitely a “free inspection product,†but an indoor air test report allows The people are disappointed. Formaldehyde exceeds the standard 6-7 times, benzene exceeds the standard more than 3 times ... ... Miss Zhu some do not understand why the expensive "green label" in exchange for the indoor pollution?
In fact, this situation is not uncommon. Many consumers in order to ensure the quality of newly renovated houses to prevent indoor environmental pollution, to the formal building materials market, buy a decoration material that meets the national standards, please be a formal decoration company, spend The price of high-end decoration, but after the completion of the renovation, it was found that there was a polluted house. Where is the problem? Is green material credible and credible? Is decoration pollution really impossible to prevent?
Green building materials are not completely without pollution
Many building materials are now nominally "green building materials" and "environmental friendly materials" without any pollution. In fact, "green building materials" and "environmental protection materials" do not mean that there is no pollution, but that their pollution is lower than the standards set by the state. For example, if the formaldehyde emission of some plates is less than 0.15 mg per cubic meter, it can be called “green building materialsâ€. In other words, under the current level of production and conditions, green building materials are not completely free of harmful substances, and they only control harmful substances within the minimum standard values.
Prevention of decoration pollution should pay attention to two links
According to the Director of the China Indoor Environment Monitoring Committee Song Guangsheng, decoration pollution is not a matter of material alone, and prevention of decoration pollution requires attention to two links.
The first step is to have a sense of indoor environment when doing overall decoration design. Why do some of the consumers choose to decorate all the environmental protection materials, but after the renovation of indoor air pollution? There is a question of choosing a fitting design solution. The design mentioned here refers to the design of materials and layout of the whole room for the consumers, such as what materials are on the ground, whether the walls are painted or wallpapered, the volume of the furniture, and the selection of materials.
In determining the home decoration design program, we must pay special attention to the following three aspects: The first is a reasonable calculation of housing space carrying capacity. Since various decorative materials currently on the market will release some harmful gases, even materials that meet the national standards for hazardous materials for interior decoration materials will cause harmful substances to exceed the standard in a certain amount of indoor space. Followed by using a variety of decorative materials. Especially for ground materials, it is better not to use a single material because ground materials account for a large proportion of indoor decoration and are prone to indoor air pollution. The last step is to keep a good amount of pollution for buying furniture and other decorative items. Because a variety of pollutants can be superimposed, if interior decoration hazardous materials have already exceeded the national standards, if you purchase furniture and other decorative items, it will certainly cause excessive indoor pollution.
The second link is to pay attention to the construction process in the renovation. The China Indoor Environmental Testing Center has found through inspections in recent years that the indoor environment pollution caused by the unreasonable construction process is showing an increasing trend, mainly in the following two aspects: First, the issue of floor paving. Pavement lining under solid wood flooring and composite flooring is a traditional process, but this has caused a lot of environmental pollution. This is because large core boards and other wood-based panels under the floor all contain formaldehyde and cannot be closed. And ventilation, and the use of a larger area, in addition to some construction workers use inferior materials, exacerbated the content of harmful substances, resulting in indoor formaldehyde pollution is not easy to remove. Followed by the wall finishing problems. When carrying out the wall finishing project according to the regulations, basic treatment shall be carried out and the interface agent shall be applied to prevent the wall surface from peeling or cracking. Some construction workers only use paint varnish for the primary treatment, and most of them use low-grade varnish. A large amount of thinner is added during brushing, causing serious benzene contamination. Because it is enclosed in putty and wall paint, It will volatilize indoors for a long time and it will not be easy to remove.
Focus on the selection of three types of materials
Variety of decoration materials, a wide range, consumers must choose according to national standards, and should pay attention to the following three types of decorative materials:
One is stone tiles. Should pay attention to its radioactive pollution, especially some natural stone, radioactive material content is relatively high, if the dealer does not have a test report or the consumer does not trust, you can take a sample to the relevant testing unit for radioactive detection.
The second is paint coatings. Such as furniture lacquer, wall paint and various adhesives used in decoration. This kind of material is the main source of benzene pollution in indoor air. At present, there are many problems in the market. Consumers should pay attention to selecting the products of regular manufacturers when purchasing, and it is best to purchase them at the store, or choose water-based materials that do not contain benzene.
The third is artificial board category. Such as a variety of composite flooring, large core boards, plywood, and density boards. This is the main source of indoor formaldehyde pollution. Consumers should pay attention to the choice of branded products. It is best to use formaldehyde eliminators before the decoration to eliminate harmful substances from the plates, which can greatly reduce the amount of formaldehyde released from the wood-based panels.
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