Keep it clean. I wash mine twice a year with Dawn soap and water and soft brush.
Also you need to check the seams and all the caulking and if cracked, go over it with more self leveling caulk. You might want to consider covering the caulking with Eternabond tape instead, then you can pretty much forget about it as that stuff works forever and sticks to roof and caulk. Eternabond is my next big mod/project on my TT.
2014 Jayflight 24FBS Elite
2009 F150 Supercab, 5.4L ,3.73, HD Tow Package, Equal-i-zer 1K,
Progressive EMS-LCHW30, TST 507RV TPMS, Hydro Life HL-200, Maxxis 8008.
Best friend wife and dog Cooper. RETIRED 6/30/16. WOOHOO! Now the "endless summer" begins.