to answer those questions is they cover up to the a/c seals so you can remove and replace a/c units as needed as far as a broken sky light or vent they leave you a customer care kit for minor repairs and sealing when you have a sky light replaced or vent ect, you call and they will schedule a tech to come and make a permanent seal at the repaired spot.
Hope this info helps if not feel free to call RvArmor anytime at 855-782-7667
Bigfrank
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