I took the TT in about a couple of years ago for some service work. The service writer asked me when was the last time I inspected the roof and recaulked? I said I have yet to be on the roof. You see, I keep the TT in a building and only take it out about 3 weeks a year for trips. He began to lecture me about the importance of cleaning the roof and resealing any cracks and that if I don't maintain the caulk that my warrantee will be voided. Well, he went top with the intention of coming down and giving me the old "I told you so" statement. After a few minutes, he came down and said that was the cleanest roof he had ever seen! All I said was Yep. I've since been up a few times and given it the once over and did a few spot caulks.
But to the OP: If that TT is less than a year old, I'd take it back to the dealer and let them caulk it JUST in case, sometime in the future, a leak may have occurred that could be covered under a warrantee.
2012 Flagstaff V Lite 30 WRLTS
2005 Dodge Ram 2500 5.7 Mag Hemi 3.72 Rearaxle
Nights camped 2015 = 23
Nights camped 2016 = 12!
Bamaganza '16 site A25 Maybe