Quick Answer: How Long Do Windows Last?

15 to 20 years

What is the average life of a window?

What is the average life expectancy of windows? Here’s our estimate of average life expectancy for several types of windows: Aluminum – 20 to 30 years. Fiberglass – 20 to 40 years.

How often do you have to replace windows?

Many window design professionals agree that new, quality windows should last between 15 and 20 years before you start to think about replacing them. Most companies producing vinyl windows often provide a 20-25 year warranty, which is essentially a lifetime warranty – the expected lifetime of the product.