Window tracks full of grime — Alkmaar, Noord-Holland

Window tracks collect dust, dead insects, pollen, and moisture over months, forming a compacted layer of grime that prevents windows from sliding smoothly or sealing properly. Dirty tracks can cause drafts, let in rainwater, and make windows difficult to open or close. A thorough cleaning service vacuums debris from the channels, scrubs with specialized brushes, treats mold or mildew, lubricates the tracks, and checks weatherstripping — restoring full function and a better seal.