I am planning a roofing project for my fleetwood trailer. According to the manual I have an Alpha roof so I am going with the rv roof magic- Every night condensation and dew collect on top of my trailer- will the product be able to withstand this moisture to? There doesn't seem to be a way to avoid it. I can try to put a tarp on it but I think it's possible condensation will occur under the tarp. thanks for your advice!