How to do not buy a new house? Second-hand housing is also a good choice, and now many friends are more inclined to choose second-hand housing, but the decoration of second-hand housing has also been a hot spot. Everyone should not be less than the decoration of second-hand housing, thinking that it is second-hand can be a hasty, really want to say, the renovation of second-hand housing is far from the new house, there are many things to pay attention to. The following small series will give you a summary of the knowledge of second-hand house window renovation, so that you can easily replace the doors and windows!
  
First, the choice of window frame material
  
There are currently two main options for window frame materials: plastic steel windows and broken aluminum alloy windows.
  
1. Plastic steel doors and windows are made of plastic materials. Plastics have the safety hazard of becoming brittle in winter and softening in summer. Pay attention to anti-aging problems.
  
2. The aluminum alloy doors and windows of the broken bridge are made of aluminum alloy outside, and the middle is hard plastic, which has advantages in heat insulation performance and safety. However, plastic steel doors and windows are relatively economical and can be selected as needed.
  
Second, window glass selection
  
Now more and more families will buy glasses with better sound insulation. Which is better for insulating glass and vacuum glass?
  
1. Insulating glass: generally consists of two layers of glass filled with dry gas in the middle, and the frame is filled with a desiccant. It has good insulation and heat insulation effect, and has better sound insulation effect on medium and high frequency noise, but it has little effect on low frequency noise (such as traffic noise).
  
2. Vacuum glass: The two flat glass gaps are evacuated into a vacuum and the vent holes are sealed. The gap between the two sheets of glass is 0.1-0.2 mm, and there is a supporting bracket in the middle. Its thermal insulation performance is difficult to compare with insulating glass, and its thickness is also thinner than insulating glass, but the price is relatively high.
  
Many small stores called hollow glass is actually just two layers of ordinary glass, reminding everyone to pay attention to distinguish! Many businesses mislead the owner of insulating glass is vacuum glass, in fact, the performance, price, appearance of the two are different, pay attention to distinguish, also There is a laminated glass that is very safe, but it is not currently used in home decoration.
Third, the choice of window structure
  
The window structure is divided into: sliding window, casement window and swinging upper hanging window.
  
1. The sash window has simple and beautiful façade, flexible use, large lighting rate, less space, and convenient screen window, but the thermal insulation performance, sound insulation performance and sealing performance may be poor.
  
2. When the window is opened outside the window, it is easy to be damaged when the wind is blown. The inner window should occupy part of the room. It is not convenient to use the screen window and curtains (the curtain decoration effect diagram) when opening the window.
  
3. The swinging upper and lower hanging windows are suitable for high-rise buildings, which can be opened flat or pushed from the upper part. It can be ventilated and safe. Because there are hinges, the window can only open a gap of ten centimeters, and it can't be reached from the outside. It is especially suitable for use when no one is at home.
Fourth, the cost calculation method
  
The general merchants give you a quote of xxx yuan / square, but the total cost found at the time of settlement greatly exceeded expectations! In this regard, Xiao Bian's suggestion is to ask the following items that are easy to be tricky, whether it will be charged.
  
1. Whether the corner column and beam are additional charges, what price/meter.
  
2, how to charge waterproof.
  
3. Whether the hardware accessories are charged.
  
In addition to the detailed description of the charging standards, the use of profiles, glass materials, the friends of the decoration, but also pay attention to the production and on-site deadlines as well as the scope and duration of the warranty.
  
Fifth, construction points
  
1. The demolition of the window is usually carried out by the construction team or the special demolition personnel. Generally, the removed windows and the construction personnel can directly negotiate a price to directly offset the demolition expenses, or find the waste recycling personnel to recycle.
  
2, before the installation, you need to identify the authenticity of the material, and review the size of the window to avoid errors.
  
3. After adjusting the window, you need to use styrofoam to fill the gap between the window frame and the wall. After the styrofoam is cured (usually 2-3 hours, winter takes longer), the excess styrofoam is cut off. After the styrofoam is finished, apply a sealant evenly around the window frame to prevent rainwater from penetrating into the room from the installation gap of the window and the wall.
Sixth, acceptance
  
1. In addition to checking whether the window is dexterous and convenient to switch, the surface is smooth and smooth without serious scratches, the profile is not cracked or broken, and the hardware accessories are complete, the position is correct and firm, and more importantly, the sealing is checked.
  
2. Another problem that is easily overlooked is that after the installation of the window, the outer window sill should be made to run slowly, that is, slightly inclined to the outside to prevent the water from seeping into the room under the entrance window or the wall entering the room. It is the construction team to do).
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