When I purchased my pre-owned class A, I preformed what I thought was a thorough pre-purchase inspection. The one area I could have done better with was inspecting the rubber EPDM roof. I was not prepared to climb up and walk around on the roof, so I climbed as far as I could and looked across the roof. Seemed ok, I saw a few black spots in the distance, but figured it was probably mold or discoloration that would clean off.
After I brought the RV home, I purchased rubber roof cleaner and...