We live near a lake and are painting one of the bedrooms and the paint and primer won’t dry. It is January and it was necessary to do it now. The windows are wet and there are spots on the ceiling of the outside wall that are darker because the paint isn’t drying. I have a fan going , a dehumidifier and a small heater running. How long is this going to take to dry? I’m doing a Venetian plaster effect and its taking so long for the primer to dry. Yuk