Sliding window sashes move along metal, wood, or vinyl tracks fitted into the window frame at the top and bottom. To ease their movement, large sashes often have plastic rollers attached to the top and bottom, or to the bottom only.
Paint sealing the sash to the frame, a dirty or bent track, or sticking rollers can cause the sash to stick or bind. The window can jam or not close properly if its catch is bent, loose, or damaged.
A Sliding Window
Freeing a paint-bound sash. If a sash is clogged with paint, score the edges with a sharp utility knife, then rock the sash from side to side to loosen it. Clean any dirt from the sides of the sash and the frame, and lubricate both with paraffin.
Cleaning and repairing a track
Use a wire brush to clean dirt from the track; for stubborn particles, use the blade of a screwdriver. Lubricate the track with paraffin to keep the sash movement smooth.
Repair a bent track using the method shown below. You may need to remove the sash from the track before making the repair.
If the rollers are sticking, lubricate them with graphite powder or silicone spray until they move freely If they’re broken, you’ll need to remove the sash (see below) and have a glazier replace the rollers.
Repairing a catch. Sliding windows are secured with a variety of catches; the type used depends on the manufacturer and whether the windows are made from metal or wood. If the catch doesn’t work properly you may need to remove the sash from the frame (see below) to fix it.
You may be able to reshape a bent catch. First note how much it will have to be reshaped. Then remove the catch and clamp it in a vise. Using pliers or a hammer, bend the catch to the proper angle. Replace it and check the latch operationit should click as the win-dow closes, and it should have to be depressed fully for the window to open.
Usually the best solution is to re-place a malfunctioning catch or one that is worn or broken with an exact
duplicate.
Straightening A Bent Track
