Another project I have been working on these past couple of weeks has been a refurbishment of double hung wooden sash windows on the third floor of a Karen and Mike's house.  Some of the windows require a little bit of repair, others need to have the counterweights reattached, and the "G" hooks need replacing, but for the most part, it is a matter of loosening the windows, stuck under layers of paint.  Once this is done, there is scraping and sanding to do, which allows the windows, bottom and top, to move freely.  In the end, most windows move well, although there is a certain amount of quirkiness that people with modern windows would not find a familiar experience.  Such as it is, the windows are a hundred years old.  That is testament to how well they were made and the quality of the design.  It also points to the value in keeping up old things.  Well taken care of, they can still be usable and perhaps a better match with the house itself.