Do anyone have any info about the roof construction on my 2017 Coleman CTS192RD TT? I want to install some solar, but not sure about the construction of the roof. Asked Keystone and they said ask the dealer.
I'm not 100% sure but my guess would be you have wood roof trusses covered with a thin luan plywood and then your rubber or TPO membrane.
Your going to have to screw your panel brackets into a roof truss.
You may be able to find them with a good stud finder.