...I bought this 'environmentally friendly'? home, circa 1985...ie, natural gas heat, windows, windows and more windows. Even 'cooling tubes'! However, the humididty in North Mississipi isn't as friendly as the builder expected. Great little house, however, the windows sweat. I haven't removed the wood exterior to see how well they were insulated and venting in the house is though 12 18"x 24" windows, that open, at the apex of the 'solar'? metal covered roof. I did purchase a dehumidifier...???....doesn't do the job. I'm also thinking the windows may be of inferior quality, although they are double paned. Suggestions?