When working on an older renovation job, it is frequently worthwhile having a look into strengthening Strength-efficiency where doable, which include investigating replacing single panes with double glazing. In accordance with research from Historic England, air infiltration through a sash window might be diminished by around 86% with draught proofing. https://sashwindows39248.tinyblogging.com/the-single-best-strategy-to-use-for-sash-windows-79494055