▲Doors and windows are essential in the home
▲Large-area doors and windows should choose good materials
▲The hardware of doors and windows is very important
In the summer of Guangzhou, heavy rains continued, and the problem of home leakage became prominent again, and doors and windows were even the high-risk areas. Why is leakage of doors and windows difficult to avoid? In the process of home decoration, how to reduce the possibility of leakage? To this end, the reporter of Yangcheng Evening News specially consulted home furnishing professionals with many years of experience.
A doors and windows leave the factory or have hidden dangers
Leakage may be caused by hidden dangers when some doors and windows leave the factory.
First, the quality of door and window materials is not good. Because manufacturers cut corners, doors and windows products are seriously deformed, silicon sealant and sealing materials are easy to age, so installation is prone to leakage problems.
Second, the production process of doors and windows is not closed. Some small manufacturers are limited by technology, such as the inaccurate cutting size of materials, which easily leads to splicing gaps or processing loopholes in the assembly process of doors and windows.
Third, the structural design of doors and windows is not enough. Product Structure design is the root problem. Whether there is a quick drainage route for doors and windows directly determines the advantages and disadvantages of products. "Our experience is to make a suitable watertight scheme according to the structural characteristics of the product itself, and to determine the feasibility of the watertight scheme through laboratory testing." Peng jianbing, manager of the research and development department of doors and windows on snimay, said.
B installation problems are more than product problems
However, Peng Jianbing said that with the progress and development of the door and window industry and the improvement of door and window technology, the leakage directly caused by door and window product problems is less and less, and the proportion of leakage caused by door and window installation is gradually increasing.
Why is this happening? "Doors and windows and cement themselves are made of completely different materials, and their thermal expansion and cold contraction coefficients are completely different. Therefore, problems easily occur at the junction position between doors and windows and walls, the installation should be properly filled with sealing material and filler." Mr. Wen (nicknamed "Uncle Wen"), the relevant person in charge of home maintenance of liangjia, said.
Peng jianbing introduced that normal door and window products should be waterproof to the opening before installation to ensure the water resistance at the opening, and then the doors and windows should be installed. After the installation, the filling of waterproof mortar, the filling of foaming agent and the closing of internal and external structural sealant should be strictly implemented in accordance with the standards. As long as one of the steps is not completed or omitted, serious leakage hidden danger will be left. "Just because the installation seal is so important, we have standardized the process of product installation and formulated the" code for installation of exterior doors and windows of buildings-direct installation of openings "to avoid hidden dangers."
In addition, doors and windows also have service life. "If the doors and windows are used for a long time, it is easy to encounter the aging of materials, which is very common in the process of second-hand housing decoration," Uncle Wen said, "doors and windows in some locations are particularly high-risk, the first is the doors and windows with large area; The second is the doors and windows with the leading wind upward facing the wind, which are easy to generate vibration due to excessive wind, and in the long run, the material will be damaged and leakage will occur."
C don't be greedy for low prices because of small losses
The appearance of glass doors and windows of different brands seems to be not much different, but the material may be quite different. If you buy some Windows and Windows that cut corners at a low price, you may lose more because of the small size.
According to reports, there are many kinds of materials that make up doors and windows, but they are mainly divided into the following five categories:
One is aluminum. The main aluminum of doors and windows required by the national standard is 6 series aluminum alloy, namely silicon magnesium aluminum alloy, whose aluminum element content is more than 99.7%, while some door and window manufacturers on the market use recycled aluminum for extrusion to save costs, as the main profile of its doors and windows, it is much worse than the original aluminum in strength, extrusion quality and surface durability. Therefore, when purchasing doors and windows, the aluminum supply channel of the door and window factory is the first consideration.
The second is glass. In recent years, it is not uncommon for building glass to burst and hurt people. The state has clear requirements for the glass of doors and windows outside the building, and it is necessary to use safety glass, that is, tempered glass. However, tempered glass itself also has a certain self-explosion rate (about 3‰), so glass original pieces and tempered glass manufacturers suggest choosing big brands, such as South glass, North glass, Xinyi, etc.
The third is hardware. Hardware determines the durability and safety of doors and windows, and big brand products have better quality assurance. Pay attention to the sense of experience when purchasing, such as the flexibility of opening and closing hands, the smoothness of closing Casement, and whether stainless steel hardware is rusted. Pay attention to whether the functional accessories of hardware are complete, such as whether the doors and windows have anti-fall devices, whether there are child protection configurations, etc. German vibichi and American himec are all relatively well-known brands.
Fourth, sealant strip. There are many kinds of sealant strip materials on the market, such as PVC, EPDM, silica gel, etc. Among them, the rubber strip made of silica gel has the best weather resistance and elasticity, but the corresponding cost is very high; EPDM has excellent weather resistance and elasticity, and the cost is moderate; PVC strip has the worst weather resistance and elasticity, and the price is cheap but not environmentally friendly. Therefore, the market is mainly based on EPDM strip, and there are also manufacturers who use PVC strip to shoddy.
The fifth is sealant. There are two types of sealant: one is neutral silicone sealant suitable for glass sealing, which has good adhesion with glass and aluminum, and good quality can ensure stable bonding within 2-3 years, it will be degummed within half a year of poor quality, causing rainwater to leak into doors and windows. In order to ensure the construction progress, some manufacturers choose acid silicon sealant, acid silicon sealant has certain corrosive effect on the surface of glass and profiles, and will release acid gas at the same time, which is harmful to the environment and human health, therefore, neutral silicone sealant must be selected.
Another kind of sealant is used for wall sealing and closing after the installation of doors and windows. Usually, installation workers will directly use neutral silicone sealant, but this kind of sealant has more sealing capacity and insufficient compatibility and strength, neutral silicone structural adhesive should be used here, which has both sealing and strength effects.
D construction specifications reduce the possibility of leakage
Of course, good doors and windows also need to cooperate with good installation technology to achieve good use effect.
Peng jianbing reminded that there are two points to pay special attention to during the installation of doors and windows: first, the waterproof treatment of doors and windows openings. Before installing doors and windows, waterproof paint should be applied to the outside of doors and windows openings and the inside walls of the openings; the second is the sealing of doors and windows mounting hole and the filling treatment of the gap with the wall. The filling of waterproof mortar between the gap between doors and windows can minimize the possibility of water seepage and improve the stability of the installation of doors and windows. If the conditions are not allowed, foam can be filled, but the gap between the outer window and the wall must be sealed with structural adhesive.
E found leakage to be treated window and wall
Professionals all think that if the leakage occurs simply because of the door and window problems, it is easier to deal. Find the leaking point and seal it with sealant. At the same time, consult professionals or door and window companies to do a good job in drainage technology so as to make it blocked and sparse. If it is due to Wall leakage, drainage and other reasons, it is necessary to focus on the new waterproof and sealing treatment of the exterior wall.
Peng Jianbing said: "A good company will regard rainwater leakage as an important after-sales issue. Professionals and professional teams will jointly formulate treatment plans at the first time to quickly solve the leakage of doors and windows."
Uncle Wen said that when encountering the leakage of doors and windows caused by the external wall, the best cure is to repair the external wall of the whole building, but it needs to build the external wall scaffolding, if there is no government department leading or all the owners agree, it is difficult to proceed. "Therefore, it can only be remedied by 'inject', that is, high-pressure grouting is carried out at the external wall where problems occur, and epoxy resin is injected, hoping to block the weak links, however, this kind of practice often needs to destroy the decoration of windowsill, which has certain influence on home decoration."
If you pay attention to the following matters in daily use, you can effectively prolong the service life of doors and windows: first, pay attention to the maintenance of the hardware of doors and windows, and do not damage or use abnormally; Secondly, the garbage at the drainage position of doors and windows should be cleaned up in time, so as not to cause blockage of the drainage channel; Finally, the surface of the sealing material at the glass and wall should not be damaged to prevent the sealing failure.
[The source of this article is Yangcheng Evening News, which only transmits information. Please contact us to delete the infringement]]
Edit: doors and windows online-Yanzi
