Teardrops n Tiny Travel Trailers

I was told not to glue the aluminum to the side walls. The trim and door and windows will keep it in place. Any thoughts on this?

I used carpet adhesive. So far it has worked well. It does not fully set which allows for expansion and contraction. I wish I would have had a helper placing the aluminum on the trailer it is extremely hard if possible to adjust after sticking the aluminum down

No Glue. Let it float.