Nothing that I know of that causes bumps or any road surface to be a problem for slide rooms. If it's an electric slide room then I'm recommend you use a slide LOCK of some sort to keep the seals tight against the trailer but that is true even on smooth highways to prevent water intrusion when towing in the rain. ON dirt roads (gravel roads) etc. dust is just as likely to enter so use those slide locks. Used ours for MANY miles on our Alaska trip (probably over 500 miles of gravel travel on the Dalton, Denali, Cassiar and Top of the World highways and they were either a large percentage of dirt or completely dirt.
Other trips in the lower states include a LOT of logging roads in the mountains where travel is a lot slower but even more rocking and jerking side to side so locking down the slide is just as important there.
