Step 1 examine the door with your eyes.
How to unstick a sliding van door.
Look for scratches in the paint or any other noticeable damages to the door and frame.
This is very useful if you can t.
Watch this video to learn some tips from leah to get your slow moving or stuck patio door sliding smoothly again.
Close the door and run your eyes along the gap between the door and the frame noting places where the gap is very thin.
Does it need to be repaired.
It is best to inspect an exterior door in a sunny or well lit area step 2 run a piece of heavy stock paper around the closed door.
Also check for grime or any sticky buildup that may just need to be cleaned.
Be sure to brush down both sides of the track as well as help scrub out the dirt that exists in the middle move the door along the track to expose the front scrub move the door back to the closed position scrub and so on.
First all you need to do is simply give the sliding door track a good scrubbing.
Watch my video to see the steps i took to fix an internal sliding do.
If possible use a screwdriver to remove the panel so that you can have a closer look at the door lock mechanism.