Take out the screws Keeping the present window in position. Use an electric screwdriver having a Philips head little bit to unscrew the entire screws that keep the previous window panels during the frame. This could reduce the weight from the frame and help it become less difficult to remove.[2] https://upvc-windows25788.prublogger.com/30228806/how-upvc-windows-can-save-you-time-stress-and-money