A window that won't open, won't close tightly or won't stay where you put it is rarely a window that has failed. It's an operator, a hinge track or a balance that has worn out — all replaceable components.
Casement operators
The crank mechanism drives a gear against an arm. Stripped gears feel like a crank that spins freely; a seized operator feels immovable. Both are replaced as a unit, matched to the sash and the hand of the window.
Hinge tracks and shoes
Casement sashes ride on a hinge track. When the shoe binds or the track distorts, the sash drops and stops sealing on the latch side. Replacing the track pair brings the sash back into the frame.
Sliders and balances
Horizontal sliders use rollers, the same principle as a patio door. Vertical hung windows use balances — spiral or block-and-tackle — and a window that slams shut has a broken one.
Latches, keepers and multipoints
A window that closes but doesn't compress its seal usually has a worn keeper or a multipoint mechanism out of adjustment. Both are serviceable in place.
When it really is the window
- The sash frame corners have separated
- The frame is rotted or the vinyl has cracked through
- Parts for a discontinued system genuinely no longer exist
