I've done singles on doors with no issue. Does your door open against a wall? if it does you may not have the clearance needed for the double bar. Also if your door is hollow it may not be strong enough for two towels and the tugging that goes with them.

I've always put towel bars on doors, and never had a problem with them. I don't like the double bars because the towels don't dry very well.

We have a single on our bathroom door and actually did that specifically because we had moisture issues with the towel bar on the wall. The door is painted in satin enamel paint and much more resistant to moisture, and the towel bar we chose had room for the towels to hang just a bit away from the door. Switched it four years ago and haven't had an issue with it since! I can't speak to the double bar, but we got a single that was long enough to hang two full-sized towels side-by-side, if that would work for you. They dry nicely.

Thanks, all. I am 99% sure the doors are solid 6 panel doors, so we should be good.

This post was edited by momo48 on Tue, Feb 26, 13 at 20:18