In order to know how to replace a sash cord you need to understand the basics of a double hung window. A double hung window has two sashes one on top and one on bottom. A sash is the framework that holds the glass. The sashes slide up and down within a window frame. The side frames are the jambs. Heavy metal sash weights connect to sashes with a rope-and-pulley system hidden behind the jambs. The weights provide a counterbalance that makes the sash easy to open.
No one can deny that plastic windows in London are on the increase, they are showing up in place of the original antique wooden sash kind last century, do indeed, have a negative effect on the physical beauty of landmark homes. The situation is sad, it’s true, but at least some of the blame can be placed on an unstable economy’s effect on the wallet.
In the opinion of many, sash windows are an intrinsic feature of ‘period’ homes and should be saved at all costs. Well, maybe not ALL costs, but definitely worth the time and trouble to repair rather than replace. Some repairs are easy enough to do yourself so here’s a little about how sash windows work.