Moisture issues with Kodiak 220RBSL

[tommyfix]

Hi there! new to living in a travel trailer. I'm located in Nanaimo BC Canada where there's a good amount of rain(rain forest) and cool temps(down to 6 celcius at night and average 12-14 daytime). I have purchased an electric heater to cut down on humidity in the air vrs propane furnace and we have tried opening windows, roof vents had on board fans on. Moisture still forms in the corners of the dinette slide out, on window corners and along the metal hinge bracket for the Murphy bed. Any suggestions out there. Thanks