Although restoring older windows entails a lot of work, the end result can be worth the time and effort. The aging windows can have their drawbacks ? their paint may be peeling; they may be loose or may stick; they may be drafty ? it is often viable to retain the original windows and resolve any problems with careful repair. In the long run, it may actually be simpler, more attractive and more cost effective to restore rather than replace. Also, you will have the window that was designed for the building in the first place with the original divisions, shapes and materials. In historic buildings, there is an even greater impetus to reuse the original windows because they are a key element in the appearance and history of the structure. For this reason, replacing them should be considered only if the building does not have noteworthy historic significance or the windows have major defects that would make their repair unworkable. In repairing the windows of historic structures, all restoration must comply with the United States Secretary of the Interior?s ?Standards for Rehabilitation and Guidelines for Rehabilitating Historic Buildings.? To know the details, read the article.