To remove grime from old lubricant, airborne debris, remains of insect life, or other unwelcome materials, exposed parts of the open window should be wiped clean.
Drainage channels should be regularly and diligently cleaned to remain clear of blockages. Sash tracks should be kept dirt-free by using a small brush, and blowing the dust out of the tracks and corners.
Keep moving the sashes so that different areas can be cleaned. Use mild soap or detergent to clean all tracks and sash cavities. This will maintain smooth operation of the sash, preventing excessive wear on hinges, locks, rollers, and weather-stripping components.