How to fix water seepage by the window?

In building leaks, leaks around aluminum alloy windows also account for a large proportion. The main reasons for the leakage are as follows: 1. Water accumulation in the cavity of the aluminum frame ； 　　2. Poor sealing around the aluminum frame ； 　　3. No drip edge on the window sill ； 　　4. Water ingress into the exterior wall at the top of the window sill ； 　　5. The gaps around the glass in the aluminum alloy windows are not properly sealed. The prevention and control measures are as follows: 1. Change the cavity of window frames to solid frames as much as possible, for example, by filling them with foam strips during window manufacturing ； 　　 2. Cavity window frames that have developed leaks can have their cavities filled using grouting ； 　　3. The perimeter of the window frame must be tightly sealed, with a drip edge at the bottom of the window ； 　　4. Apply waterproofing to the exterior wall at the top of the window ； 　　5. The perimeter of the glass is well sealed ； 　　6. If water accumulates in the window groove, drill holes to drain it; the outside of the window sill should be 1–1.5 centimeters lower than the inside