I ordered a "sandwich"-panel: PU-foam between two layers of fiberglass, reinforcements for the hanging cabinet in the kitchen + tubes for light and roof vent wiring. Since i import BundutecUSA-Campers now i was glad to get enough material of their Aluminium roof framing profiles with my last camper order. Unfortunately this fall i will not find the time for the job.
Using some Dekalin glue for sealing and bonding needs temperatures in the 50´s. My "shop" in our old barn is not heated and temperatures dropped the last week.