Assessing water damage in wooden camper

When we got our old camper there were some inside water marks, mostly under the window. Checked framing, no rot. Sweating windows and condensation in cold weather and propane heat maybe. Only place that was rotted was one ceiling panel from the bunk escape hatch forward. Stuck my hand thru it one night. Ripped that off praying all the time for it to be surface issue only. ....it was. Wood framing not even stained, no mold, no rot. We got lucky. Installed thick residential insulation as the stuff left in there was a joke, bought a new piece of paneling and naked it up there and all is well. Not everyone is so lucky. It also had no mold, mildew, or musty odor. It came from the dry climate in Colorado high desert.