1. Water accumulation in the cavity of aluminium frame;
2. The sealing around the aluminium frame is not good.
3. No drip line on the eaves of windows;
4. Water enters the outer wall at the top of the eaves.
5. Aluminum alloy windows have poor sealing of glass edge seams.
The control measures are as follows:
1, as far as possible, the window frame's cavity should be changed into a solid frame, for example, when the window is made, foam strips should be filled.
2. Cavity window frame with leakage can be filled by grouting method.
3. The window frame is tightly sealed and the eaves are dripping lines.
4. Waterproof treatment of the outer wall on the top of the window eaves;
5. Good sealing around the glass;
6. Drilling and draining the water in the window slot should be done. The outside of the window sill is 1-1.5 cm lower than the inside.