Hello. I just bought a vintage camper trailer. I live in rainy Seattle so I need to buy a cover that will repel rain and snow yet breath well enough to protect my glamper from mold, mildew and rot. My glamper is in great shape and has lived most of its life in Arizona, so no leaks. I've read many RV owners prefer covers made from Sunbrella fabric, but I'm not sure Sunbrella will repel rain and snow. Curious to hear comments for Carver marine grade RV covers,Classic Accessories PermaPro covers or Camco ultra-guard covers versus Sunbrella covers. Thank you so much in advance!