The window sill and bottom of your sashes are the locations most vulnerable to rot as this is where h2o collects. Sash windows usually consist of a number of smaller panes, or ‘lights’. These are typically held together by glazing bars – astragal bars – to create a greater glazed region. https://beautywater33119.aioblogs.com/88409023/a-secret-weapon-for-sash-windows