renting house window noise reduction, first add soundproof strips and sealant strips outside window frame, then use thick curtains inside. if noise still exists, consider replacing window with double glazing.

why this works? soundproof strips (1.5-2mm thick) can reduce 15-25dB noise transmission, according to national building acoustics standard GB50118-2010. sealant strips fill gaps between window frame and wall, which are usually 2-5mm wide. when combined with 10-15cm thick curtains (with 50%+ density), total noise reduction reaches 30dB+ for low-frequency sounds below 500Hz. double glazing windows with 16mm air gap block 20-30dB noise compared to single glazing. remember to check window frame sealing every 6-12 months, especially after typhoon or heavy rain.