Why do doors and windows leak? How to solve it? Experts explained that the air leakage between doors and windows is not only related to sealing, but also closely related to installation and accessories. It can be checked step by step, and then the strategy to deal with "air leakage" can be formulated.
□ repair article
window Air leakage
>> Reason 1: poor material
the current window material is mainly broken bridge insulation aluminum and plastic steel windows, and aluminum alloy doors and windows have been gradually eliminated due to their poor sealing performance. But even if you buy plastic steel windows and broken bridge aluminum windows, experts suggest that you should pay attention to the material.
"Whether the window leaks or not has a great relationship with the material." The peak decorative Hu Zengguang, engineering director of Beijing branch, said that if the material is poor, the window will be deformed after two or three years of use. Once it is deformed, the sealing performance will be poor, and air leakage will occur, therefore, it also reminds the owners to pay special attention to the material when purchasing windows.
Solution: You can only find a window manufacturer to solve the problem.
>> Reason 2: Even if the installation is not in place, even if the windows with excellent materials are not in place, the installation process is also an important factor to determine whether the windows leak air. First of all, the window must be safe, otherwise the window may become more and more crooked after being used for a period of time. The gap between the window frame and the wall will become larger and larger, and air leakage is inevitable.
Secondly, according to the reporter's understanding, when installing the window, it is necessary to fill the gap between the window frame and the wall with Styrofoam. After curing at styrofoam, apply sealant evenly around the window frame to prevent rainwater from penetrating into the room from the installation gap between the window and the wall, and also prevent air leakage. Moreover, it is necessary to apply glue on both sides inside and outside the window. However, Hu Zengguang introduced that some workers only need to glue inside or several points inside, so the seal is not tight. Even if the external hit Styrofoam, it will be powdered in a year or a year and a half, and water leakage in summer and wind leakage in winter will occur. In addition, when decorating, home improvement workers find that the gap between the window frame and the wall is not tightly sealed, and putty will be added from the inside. However, after a long time, a slight gap will appear, resulting in air leakage.
Solution: The first case is to find a window manufacturer. If the glue inside the window is not good and the gap is relatively small, you can stick masking tape on it yourself and apply sealant to the gap. If there is a problem with the external glue, you need to contact the worker to operate.
>> Reason 3: another important reason why the accessories are not powerful and the window leaks air is that the sealing accessories are faulty. The most common one is the aging and cracking of the sealing strip, which directly leads to the deterioration of the sealing performance of the window. Another one is that styrofoam is too soft. After several years of use, pulverization occurs, resulting in a larger gap between the window frame and the wall, air leakage is generated.
Solution: You can replace the sealing strip by yourself. It is better to use EPDM rubber, or rubber and plastic rubber strips with poor quality can also be used; If you can't operate by yourself, it won't cost too much to find small shop workers who make plastic steel windows on the street. As for styrofoam, it needs to be operated by workers. After Styrofoam is cured, the owner can pinch it by himself, and the quality of the pinch is better.
How to judge what causes the air leakage of your own windows? Hu Zengguang introduced that standing on the side of the window, he felt where the wind direction came from. If the frame leaked the wind, there was something wrong with the sealing strip. If he felt that the window was OK, the glue was not strict.
Door air leakage
>> similar reasons. Similar handling
"The leakage of the door is similar to that of the window." Hu Zengguang's introduction is roughly caused by the following reasons: 1. The quality of wooden door is too poor; 2. During use, the door is deformed and the crack of the door becomes larger; 3. Exterior door sealant strip aging; 4. Exterior door during installation, the gap between the door frame and the outer wall body is relatively large. Some are not blocked by sealant during installation, or only outside seam are blocked by sealant, and there is no seal inside, air leakage will also occur over time. "If entry door is facing the corridor, it will feel very windy."
solution: due to the quality problem of the door, if it does have a great impact, you can contact the manufacturer or replace the wooden door; If it is just the problem of sealant strip and gluing, replace the adhesive strip and re-glue it.
In addition, Ms. Yu, the reader, also proposed the special situation of air leakage at the bottom of her home. "My family lives in an old building, and entry door is also old-fashioned. The security door is an iron frame door, there is a wooden door inside. When winter comes, I feel standing in the living room. The cold wind rushes through the gap under the door and I dare not stay in the living room. Is there any good solution?" Hu Zengguang said that Ms. Yu could consider buying a sealant strip in the building materials market. One side was the feeling of velvet, and the other side was a band-aid that could be pasted on the frame around the door. Once the door was closed, the gap will be much smaller, which can solve the problem of air leakage, but this sealing strip needs a door frame. Some old-fashioned entry door is the "sweeping door", which is equivalent to inner door. There is no door frame. If Ms. Yu's home is this kind of door, she can only consider making a 1cm high cement table or wooden threshold, generally, the seam under the door is 4-7mm. After the threshold is built, the gap can be blocked basically.
□ purchase articles
for owners who need to replace doors and windows, they pay attention to the sealing performance of doors and windows when purchasing products. Experts point out that paying attention to the following factors can save a lot of heart in use.
Casement window T-shaped door has good sealing performance
the sealing performance of doors and windows is also related to the opening method. As for Windows, although Casement window need to occupy indoor space in-swinging casement window when it is opened, its wind pressure resistance, sealing performance and thermal insulation are good; Sliding window the cost is low, and its manufacture and installation are more convenient than casement window, however, the wind pressure resistance, sound insulation effect and sealing performance are slightly worse. Hu Zengguang introduced that only vertical sealing strip is available in sliding window, and wool tops is relatively thin. Not only is the way to squeeze the sealing strip around casement window better, but also the quality of wool tops is slightly worse.
As for doors, the reporter learned in the market that many wooden door enterprises have launched T-shaped doors. Compared with the traditional flat door, the edge of the T-shaped door leaf has a T-shaped turning shape, and the prominent part is just pressed on the door set, which improves the sealing performance of the door. If the door seam of the indoor wooden door is too large, the owner can also adjust the hinge and other hardware to make the door leaf fit more closely with the frame.
Alert low-quality products
yan leinguang, director of the plastic doors and windows committee of china building metal structure association, once introduced in an interview with our reporter that the use of inferior hardware may cause the doors and windows to switch unsmoothly within a year. However, the price difference of sealant strips per ton can reach more than 10,000 yuan, and the shrinkage, hardening and cracking of adhesive strips will occur within one year of quality products. Some manufacturers do not even add reinforced steel bars to plastic-steel profiles, or the thickness of steel bars is insufficient, which will greatly reduce the service life of profiles. Reinforced steel is used to improve the wind pressure resistance of windows, and the thickness should not be less than 1.5mm. Instrument frame after steel is added has a certain weight, which consumers can use as a judgment standard.
As for glass, generally speaking, two layers of glue are needed: one layer is used for bonding glass and frame, and the other layer is used for sealing between glass to isolate water vapor, air, etc. However, some manufacturers only make a layer of seal, resulting in air leakage of windows soon after use, which greatly reduces the heat preservation effect. This link requires window manufacturers to have corresponding machinery and equipment. When choosing window manufacturers, consumers can ask whether the manufacturer's glass is customized by professional manufacturers or produced by themselves, if it is self-produced, it needs to have hollow glass production line, machine glue, etc., as far as possible, do not choose manual glue, through these problems to judge whether the manufacturer has the corresponding production capacity.
Safeguard rights and interests through contracts
since ordinary consumers cannot accurately distinguish the quality of window profiles and other aspects, and the assembly and installation of Windows will affect the quality in the later period, Yan Lei Guang suggested that consumers should choose window assembly manufacturers with certain production capacity. The assembly manufacturer shall have special equipment and tools for corresponding main processes. He said that at present, there are many instrument frame production enterprises in the market, and some manual workshops use manual welding machines to produce products, which cannot guarantee the quality of products. When selecting a manufacturer, it is best to make sure that it has corresponding production equipment, such as automatic welding machine, angle cleaning machine, glass bead saws, etc.
He also reminded that consumers should refine the relevant content when signing contracts with assembly manufacturers to safeguard their own rights and interests. For example, during the one-year warranty period: 1. The profile cannot change color or powder (touch the profile by hand, and white powder appears on the profile);2. The switch function will not change, and the switch should still be flexible without blocking; 3. Glass can not appear Dew, ash, atomization and other phenomena.
