Whilst focusing on an older renovation challenge, it is frequently worthwhile having a look into bettering Strength-efficiency where probable, like investigating replacing one panes with double glazing. In line with exploration from Historic England, air infiltration through a sash window is usually lowered by up to 86% with draught proofing. https://sash-window-draught-proof29528.blogtov.com/16332029/5-essential-elements-for-sash-window-draught-proofing