Originally Posted by Belin
I did not know about damp rid and I have no cover on it.
It is a good idea to have a desiccant inside when stored or closed up without ventilation, especially in very humid environments. Some of us actually run dehumidifiers.
In light of being stored and without a cover, I'd recommend you give the sealant on the roof a good look, and keep an eye on the blisters. If they prove to stay dry and roof sealant looks ok, humidity probably did its thing. If so, you can try to reactivate the wall covering adhesive with a hairdryer on low till warm and then smooth with pressure - roller, book wrapped in a cloth, etc.