To prevent air leakage from doors and windows, you can start from the following aspects:

1. Installation Precautions

1. Window installation position: Make sure the window is not installed too far outside, especially if there is a dripping edge on the window. It must be about 2 centimeters inward to prevent direct rainwater. It rains on the windows and flows down the cracks into the home.
2. Window frame fixing: When installing windows, the fixing of the window frame is very important. Use expansion screws or pull-out screws, and ensure that the window frame is fixed with one screw 30 to 50 centimeters apart to make the entire window stronger.
3. Foam filling: The foaming glue around the window frame should be filled evenly to effectively prevent wind, rain, dust, insects, etc. from entering the room, and Improve the sealing performance of windows. Be careful to choose good quality foam glue to avoid powdering and falling off over time.
4. Glass installation: When installing window glass, spacers should be added on both sides to provide even support for the glass and avoid uneven stress on the glass. And break.

5. Seal strip inspection: When installing windows, check Check whether the sealing strip is elastic and make sure it fits tightly with the window frame or glass. If the sealing strip is aged or damaged, replace it in time.
6. Exterior window sill slope treatment: Before installing the windows, prepare the slope of the exterior window sill in advance so that water can flow away along the slope and avoid water accumulation. Flow into the window.

2. Daily maintenance and inspection

1. Clean the card slot regularly: If there is debris or dust in the window card slot, it will affect the sealing effect of the window. Therefore, the card slot should be cleaned regularly to keep it clean.
2. Check the installation angle: If the window is installed at an improper angle, the window will not be fully closed, resulting in air leakage. Regularly check the installation angle of the windows and adjust them promptly if there are any problems.
3. Replace seals: Over time, window seals can age or become damaged, causing air leaks. Therefore, the condition of the sealing strip should be checked regularly and replaced with new sealing strips in time.
4. Check hardware accessories: Window hardware accessories such as hinges, handles, etc., if loose or damaged, will also affect the sealing performance of the window. Regularly check the condition of hardware accessories and repair or replace them in time.

3. Upgrade window materials and structures

1. Choose high-quality materials: When choosing window materials, you can consider using high-quality materials such as broken bridge aluminum to improve the thermal insulation performance and sealing effect of the windows. .
2. Install double-layer glass: If the window uses single-layer glass, you can consider installing double-layer glass to increase the thermal insulation performance of the window. and sealing effect.

In summary, preventing air leakage through doors and windows requires multiple aspects including installation, daily maintenance and inspection, and upgrading of window materials and structures. Through the implementation of these measures, the sealing performance of doors and windows can be effectively improved and air leakage can be prevented.