Getting a Sliding Door to Glide Again
A sliding door that sticks or grinds usually just has a dirty track. Ten minutes of cleaning brings back the smooth glide.
Clear the Loose Dirt
Open the door all the way and run a vacuum with a crevice tool along the full length of the track. Leaves, sand and pet hair collect in the corners, so go over those twice.
Scrub the Track
Sprinkle a little baking soda along the track, spray it with white vinegar and let it fizz for a few minutes. Work the grime loose with an old toothbrush, then wipe it all out with a damp cloth.
Keep It Running Smoothly
Once the track is dry, spray a light coat of silicone or dry lubricant on the rail. Slide the door back and forth a few times to spread it evenly.
A quick vacuum of the track once a month stops most sticking before it starts.