Originally Posted by usmc616
If the roof is cllean that means less dirty water running down the sides helping to minimize black streaks on the TT.
+1 above and it is in the manual that the roof inspection is required maintenance.
I may be the extreme here, but I get up there 3-4x's a year and clean it. It may look white but that gray builds up quick and once you start to clean it you notice how dirty it is. This is also subject to where you camped and where you store it.
Spic and Span granular is what is recommended and what I have found to work best. Be very careful as it gets slick in a hurry and with the new crowned roofs it's a little challenging sometimes. I use a car wash soft brush which does a nice job.
As for the slides I clean them, but found that with the toppers on the new unit I don't need to do it as often. You should also inspect your slide roofs once retracted to insure that there is not a build up on the inside. Pine needles and leaves can get under the seals and build up inside over time if you don't sweep before retracting.