Have a customer in Navarre that has mold growing on a ceiling and wall near a window and exhaust vent, no matter how many times they treat and clean it always comes back in a few days. After our inspection we found that the problem is not the window but is the exhaust vent is not connected to the duct so all the humid warm air is trapped which condensates near the vent causing mold growth. If you have a mold problem you can reach us at 850-SERVPRO (737-8776)