...how much did it cost you? I have 20 windows, of varying sizes, that are getting on a bit. 3 story victorian terrace, a couple of tall windows and bay windows, a velux as well, all starting to show their age, leaking air, difficult to open/close, sealant peeling away, double glazing blown, etc.
Nothing that's causing damage to the house, they are waterproof, but ageing nonetheless. I'm wondering how long they can limp along before disaster strikes! And how pricey it will be when it does....