Where does the formaldehyde in indoor areas come from?

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In home renovation, it’s inevitable to use a lot of paint, coatings, and wallpaper； Carpenters use synthetic panels when working on ceilings, which makes the use of adhesives inevitable; moreover, the adhesives used in the sofas, cabinets, tables, and beds we purchase are all sources of formaldehyde pollution. In fact, it’s possible not to detect any odor when the level of formaldehyde is too high; even if it’s 2 to 3 times above the normal level, if there is a slightly irritating smell in the bedroom or living room, then the level of formaldehyde must be significantly excessive. Briefly, here are several methods for controlling formaldehyde at its source: in cases of mild pollution, it comes from materials such as putty, waterproof coatings, and carpets and curtains, where formaldehyde is used as a waterproofing agent. Common sources of pollution: various generic glues used in renovation; these can be replaced with well-known silicone adhesives. Major pollution sources: wallpaper adhesive, wall paint. Replace regular wall paint with eco-friendly latex paint ； Wallpaper adhesive can be made from glutinous rice adhesive or eco-friendly materials that require no adhesive. Top sources of pollution: furniture, wooden floors. In home decoration, the materials that pose the greatest challenge in terms of formaldehyde are composite panels containing adhesives. Not only is the amount of formaldehyde high, but also **all the small furniture items in the home are sources of pollution; furthermore, the formaldehyde in composite panels is difficult to dissipate, with a dissipation period that can last over a decade! What is composite panel? They are boards made by pressing wood chips, sawdust, wood fibers, and various adhesives together; particle board, MDF, fiberboard, solid wood particle board, medium-density fiberboard, core board… Basically, all the types you’ve heard of are composite boards. However, the composite panel itself is not a source of pollution; it is the various adhesives used in it that are the real culprits. There are also many composite panels on the market that use environmentally friendly adhesives. Moreover, solid wood panels do not mean they are completely free of formaldehyde; in order to achieve a smooth surface, some of these panels are coated with paint. If this paint is of poor quality, then the level of formaldehyde contained in them can be a concern.