if it doesn't roll on the bottom it may roll from the top. maybe spray
nine cleaner will help. if you liked a wet teflon spray try the dry
teflon spray it may attract less dirt. the door may make more sense
when you and a helper lift it up and remove it to service it.
search sliding door roller at:
www.hdsupply.com

AKA gray asphalt wrote:
The door is about 8 years old. It doesn't have any plastic wheels or
anything other than what looks like a tongue and groove between the door and
the frame. I removed it once and cleaned it and put in some teflon stuff. It
worked for about 6 months. Now it is really sticky and cleaning didn't help.

What should I do?
Are the doors usually a standard size? It's a tract home.
I'm cheap.

Thanks