Fine dust, light salt and humidity
Dust that enters around the edges or when windows are opened settles in the track, and when humidity meets it, it binds together and clings to rollers and seals. In buildings near the sea, a light salt film may also form on the metal and make the dirt stick more.
The longer tracks are ignored, the more friction the rollers face and the heavier the door becomes to open, which speeds up wear on the moving parts.
Signs that cleaning is due
- Stiff sliding or a scraping sound
- A grey muddy layer at the bottom of the track
- Water pooling after rain without draining
- Sand grains near the edge of the sliding door
