Real Lifespan: How Long Do Windows Last (Data-Driven Answers)
Most advice on “how long do windows last” is useless. It relies on vague averages—20 to 40 years—that conveniently ignore the elephant in your living room: your home is not ‘average.’ The generic manufacturer estimates are, frankly, SEO snake oil designed to provide a comfortable, non-committal answer. The truth is, we can predict the functional …