Tell me what you think... The roof on my 2014 Keystone Laredo 292RL pulled loose from the trim that holds it down in front. Doesn't look like it will be covered by warranty - we're just outside of...
I can tell you that on my unit they are definitely glued down. And talking to Alpha Systems (they provide TPO to Keystone) that they indicate that they are glued via adhesion and subsequent pressure.
Without glue, the low pressure created when driving will cause them to come up.