How To Repair Double Pane Window Verified -
Note: This section assumes your window frame is in good condition. If you are replacing the entire window structure, you will need a contractor.
Most modern double-hung windows allow you to tilt the sash inward or lift it out of the track. Remove the entire sash (the part of the window that moves) and place it on a flat work surface. Tip: Take photos of the window before you disassemble anything to help with reassembly. how to repair double pane window