Window tracks collect dust, grit, dead insects, and moisture that can make a window stick. A brush and vacuum remove the dry material without flooding the frame or pushing debris into the drainage openings.
Open and inspect
Open the window as far as the design permits and check the track, corners, weep holes, and locking hardware. Keep hands clear of pinch points. If the frame is damaged or water is pooling inside, note that cleaning alone may not solve the problem.
Loosen dry debris
Use a soft detailing brush to work along the corners and rails. Direct loosened dust toward the vacuum nozzle rather than brushing it into the frame. Avoid metal tools that can scratch painted or anodized surfaces.
Wipe lightly
Use a barely damp cloth for the remaining film and dry the track afterward. Keep liquid away from weather seals and drainage openings. Do not use abrasive powder or a solvent that could soften the frame finish.
Check operation
Close and open the window slowly and confirm that the rollers move freely. Clear only visible obstructions from drainage holes. If the sash remains difficult to operate, have the rollers, frame, or seal inspected.