We live in a 1940s farmhouse. We have been living here for 25 years. A few years ago we had a metal roof put on the house. They removed our turbines from the roof and instead cut a ridge vent for ventilation. After that, we started having problems with debris and insects getting into our attic. So, this past spring we had someone come in and put in a foam type piece under the ridge of the roof. It was suppose to keep out debris and insects but still allow air flow as needed in our attic. We also installed a vent and a fan in the gables of the house to help with air flow. We ran the fan during the summer months to help remove excess heat in the attic. This fall we had additional insulation added to our attic. Currently, our house is much warmer and no debris or insects can get in our attic......... But NOW we have a new problem. Today I heard dripping coming down on our attic stairs. I pulled the stairs down and went into the attic to see what looked like frost..... condensation,...... and some type of mildew formed all along the very ridge of our attic! I also notice it around the roof along an area where a chimney comes up from our bedroom and through the roof. In all the years we've lived here...... This has NEVER happened. Even though this house is OLD.....the wood in our attic has looked pristine!. We are at a loss at what I next steps should be. Can anyone advise????