Incedentally, many a home owner finds it convenient to replace their current wood windows with a new venyl, fiberglass or or metal window instead of repairing the old existing wooden window. The reason could be the attractive prices of these alternative options. However, Many of the repair shops in Littleton would recommend to repair the window and would offer replacement as an option only in case of extreame situations when the window is showing signs of rotting, excessive water infiltration, loose/cracked/ missing exterior casing, missing or rotting drip etc. The reason is, as they say, The comparison between an old window and the new plastic windows is unfair. By the time, your old window needs a repair, the new one would probably not even last!