However, if you live inside of a Conservation Place or inside of a mentioned setting up, modifying to plastic sash windows will almost certainly be frowned on. In line with research from Historic England, air infiltration through a sash window is usually lessened by as much as 86% with draught https://andrecxpfw.blogdal.com/36403004/new-step-by-step-map-for-sash-window-draught-proofing