How to Clean Window Tracks and Sills
Window tracks accumulate dirt, dead insects, and debris — often overlooked because they're rarely in direct sightlines but become visually obvious during window cleaning and can trap moisture that leads to mould. The process is fast with the right tools.
Tools You Need
- Stiff bristle toothbrush or small cleaning brush
- Vacuum with a crevice attachment
- All-purpose cleaner or diluted white vinegar
- Cloth or paper towels
- Cotton swabs for tight corners
Step-by-Step Process
- Dry brush first: Use the toothbrush to loosen dried dirt and debris in the tracks — this makes vacuuming more effective. Brush the debris toward the centre of the track.
- Vacuum: Use the crevice attachment to remove the loosened debris. Get into the corners and along the entire length of the track.
- Spray and soak: Spray all-purpose cleaner or diluted vinegar into the tracks and along the frame. Allow 2–3 minutes for it to dissolve grime.
- Scrub: Use the toothbrush to scrub the wetted track — paying special attention to corners and the sliding grooves where dirt compacts.
- Wipe: Use a folded cloth or folded paper towels to wipe out the loosened grime. Slide the cloth along the track. Repeat with fresh cloth sections until clean.
- Cotton swab finishing: Use cotton swabs dampened with cleaner to reach the corners at each end of the track where the cloth can't reach.
- Wipe frames and sills: Wipe the window frame and sill with a damp cloth. Spray and wipe if there's stubborn grime.
Mould in Window Tracks
If you see black mould growth in the tracks (common in older windows or climates where condensation forms):
- Apply undiluted white vinegar to the mould and allow 10 minutes before scrubbing
- For heavier mould: apply a diluted bleach solution (1 tablespoon bleach per 1 cup water) and scrub
- Ensure windows are well-ventilated to reduce future condensation
How Often
Window tracks should be cleaned 2–4 times per year — spring and fall are the natural times, as window use increases in summer and fall brings more debris. Including window tracks in a deep clean prevents the buildup from becoming a lengthy task.
Book a Maidless deep clean at maidless.ca — 4.9★, 100+ reviews, vetted cleaners across Toronto.