When I take my travel trailer in for its yearly inspection, I will see if the service department will do this for me. I am a 64 year old female and I am not getting up on the roof. I broke every bone in my wrist about ten years ago when I fell of a ladder. I was trying to save money by repairing a piece of siding that had come loose. My neighbor's dog was chasing a chicken that had gotten in their yard and the commotion caused me to lose my balance. Thank you for your great suggestions. I wonder why they don't install a screen like you have suggested when they make the air conditioners.