We know the wooden-framed, single-glazed windows in our house need to be replaced when possible. We're currently researching our options for new windows - weighing up traditional vs modern, PVC vs wood, cheaper vs horribly expensive. Although the current windows were probably installed in the 1980s they are in reasonably good nick, apart from the attic bedroom. The top pane of glass had been broken at some point. The only way to fix it properly is to erect scaffolding to reach the third storey...which is apparently an expensive undertaking. Which is why the previous owner simply nailed some plastic in place instead. Because the window