I. Preparations for Window Installation
Before installing windows, it is necessary to check the window products, see whether the installation environment is suitable, whether the old windows need to be removed, and so on. Such matters should be settled before the windows are installed.
1. Check whether the window products are qualified
The windows must be checked and checked when they enter the field. First, the appearance inspection, check whether there is damage, fracture; second, size acceptance, check the four sides of the frame size, check the fan's rectification, warping, to achieve quality pre-control before installation.
Next is to check fasteners, hardware, reinforced profiles and metal lining, to see whether the surface has been anti-corrosion treatment. If fixed by fixed sheet, the thickness of fixed sheet should be greater than or equal to 1.5 mm, the minimum width should be greater than or equal to 15 mm, and the surface of fixed sheet should be galvanized.
2. Inspection of window openings
If you want the windows to have good airtightness and stability, the key is to pay attention to the smoothness when installing them. The key to maintain smoothness is to deal with the window openings. Before installing windows, it is necessary to check whether the size of the opening is correct, whether it has been horizontal and vertical, and deal with the non-conforming opening in advance.
3. Removal of old windows
Many owners replace old windows with new ones, so they need to remove the old ones first. The removal of windows requires great care to prevent damage to the decoration and walls around the windows. Generally speaking, wood windows are easier to remove, while plastic steel windows and aluminum windows are more complex.
First, we need to cut the sealant inside the window with a knife blade, and then take the window frame. If the window is connected with the wall by expansion bolt, the expansion bolt can be removed directly with a screwdriver. If the expansion bolt is rusty, it can be broken by impact drill. If the window frame is difficult to be removed, the impact drill can be used directly. If the window frame is difficult to be removed, the middle part of the frame near the wall should be sawed off with a steel saw.
II. Window Installation Steps
Windows are usually installed by businesses, but due to the uneven quality of services provided by businesses, and the operation of some workers is not standardized, in some key nodes, owners need to watch to avoid negligence affecting the quality of windows in the use process.
1. Measuring Dimensions
When using aluminium alloy windows, the size of the balcony sealing surface should be accurately measured before sealing the balcony. The window frames and glass should be manufactured according to the size outside the construction site and transported to the construction site. Before installation, it is necessary to check whether the window size is the same as the opening size of the balcony.
2. Fixed bracket
Method 1: Fixed with fixed piece
Before installing the windows, the base of the balcony opening should be cleaned, and the base material close to the wall should be cleared, and holes should be punched at the fixed point, and expansion bolts or plastic expansion pins should be preset in order to fix the forms. When installing windows, the windows should first be seated at the entrance of the hole, fixed its position, and fixed with screw and plastic expansion pin.
Method 2: Fixation with expansion bolt
In general, bolts need to be 10 cm long. If some holes are deviated, they should be smoothed by plastering cement, etc. Bolts need to be 12 centimeters long, so that they can be fixed directly to the cement pouring layer of the original wall, so that the window frame can be stabilized. You can knock with your hand. If you find that the wall around the window frame is hollow, you need to punch deeper.
3. Check for correctness
After the window frame is connected to the window opening, it should be checked whether the window is installed correctly. If the window is not properly installed, it may become more and more crooked after a period of use. If it is a regular rectangular window, you can directly measure the diagonal line of the window (lower left corner and upper right corner, upper left corner and lower right corner), the length of the two lines should be the same; if it is an arc window, you need to use a horizontal ruler, the bubble on the ruler indicates that the window is positive in the middle; if it is a inclined window, you need to use a hammer.
4. Foaming gum
After the window is adjusted, foam is needed to fill the gap between the window frame and the wall. When the foam is cured (usually takes 2-3 hours, longer in winter), the excess foam is cut off.
5. Installation of window panes and other accessories
After fixing the window frame, the next step is to install the window fan and other accessories. Pay attention to the installation carefully.
After blowing the foam, evenly apply the sealant around the window frame to prevent rainwater from seeping into the room through the installation gap between the window and the wall.
III. Notices for Window Installation
There are many details in the window installation process, if not done well, it is likely to cause later rework and repair. Therefore, the key details should be correctly ensured during the installation of windows.
1. The profiles and wall thickness of windows should meet the design requirements, and the accessories should be made of stainless steel or galvanized materials.
2. The window should be installed horizontally and vertically, and there should be a certain gap between the window and the wall at the entrance. Cement mortar should not be used to fill the gap. Elastic materials should be used to fill the gap and seal the surface.
3. The installation of aluminium alloy window frames must be firm. The number, location, buried way and connection method of embedded parts must meet the design requirements. It is strictly forbidden to fix doors and windows on masonry by shooting nails. The opening direction, installation position and connection mode of aluminium alloy windows should meet the design requirements.
4. Aluminum alloy window fans must be firmly installed, and push-pull fans must have reliable anti-falling measures. Windows should be flexible to open, close tightly, no warping, no moving fan.