Loose roof membrane

I have some buckled siding on the front of the trailer from where I had a little misshap with my truck Hydroplaning and jackknifing the truck and trailer on the highway this past weekend. Its really not that bad but I'm wondering if air is going up the front of the trailer between the siding and wood and going up to the roof. I would think that membrane should be sealed tight at the top edge of the roof. But this is my first camper to own so I don't know how that area is attached
http://i641.photobucket.com/albums/uu131/aarondios/20160603_185635_zpspqaekgwx.jpg

http://i641.photobucket.com/albums/uu131/aarondios/2016060395185642_zpsvjpon0fr.jpg