I also get up about 4-5 times a year and spray all of the plastic vents and TV antenna and bathroom skylight with plastic protectorate to keep the plastic stuff from degrading in the hot Florida sun. I am also careful to put 2-3 costs of wax and Sealant on the front cap and the top of the back cap. The fiberglass that is parallel to the ground (flat on top) really takes a beating in the sun and needs to be cared for multiple time a year down here or it will quickly cake up and turn to dust. You really need to keep at it.
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