Glass and Window Care for Historic Homes with Modern Films

https://smart-wiki.win/index.php/Daylight_and_Privacy:_A_Guide_to_Daylight_Redirecting_Films

Historic homes carry stories in their glass as surely as in their woodwork and masonry. The window panes, often original or early replacements, can be unusually thick, uneven, or treated with antique glazing that has held up for a century or more