For air leaks in sliding windows, first replace the weatherstripping. If the gaps are large, consider installing PVC windows. If there are gaps in the wall, fill them with expanding foam and apply sealant. If the window frame is deformed, contact the seller for replacement.
Air leaks in sliding windows are usually caused by aging weatherstripping, deformed tracks, or improper installation. For aging weatherstripping, it is recommended to replace it with EPDM rubber or silicone weatherstripping, as these materials are highly weather-resistant and have a lifespan of 5-8 years. If the track is deformed, adjust the track level or replace it with an aluminum alloy track (standard width 25-40mm) to ensure smooth window sliding. In cases of improper installation, recalibrate the fit between the window frame and the wall, fill the gaps with expanding foam, and finally reinforce with sealant.
