A typical window lasts for 20 to 50 years. However, windows aren’t equal. Instead, some are better than others.

Does your home need new windows? If you’re considering replacing yours, you might wonder about the differences between fiberglass vs. vinyl window units.

Which is better? What are the differences?

Keep reading this guide to learn about the differences between these two popular window types.

Energy Efficiency

If you read through a fiberglass window guide, you’ll learn many qualities about fiberglass windows. Additionally, you can read a vinyl window guide to learn about vinyl windows.

One thing you’ll learn is that both types offer energy-efficient options.

When talking about fiberglass windows, it refers to the frame around the window. Every window is made of glass. The difference is in the thickness of the glass, the number of panes, and the frame material.

A fiberglass window has a fiberglass frame, while a vinyl window has a vinyl frame. However, these windows can have the same glass.

As a result, both window types offer energy efficiency.


So, what is a fiberglass window? As you see, it’s a window with a fiberglass frame. One difference between a fiberglass frame and a vinyl frame is the thickness.

Vinyl frames tend to be thicker than fiberglass frames. As a result, you’ll see more of the glass with fiberglass windows than with vinyl windows. The result of that is more natural sunlight coming through the windows.


Another difference between vinyl windows and fiberglass windows is their strength. Vinyl is a strong material but not as strong as fiberglass.

Therefore, choosing fiberglass windows is better if you want the strongest option. Fiberglass windows are even stronger than wood-framed windows.


Another similarity between fiberglass and vinyl windows is their required maintenance. Both fiberglass and vinyl are manufactured materials, and both are easy to maintain.

Cleaning them periodically is the only maintenance task you really need to do.

However, you can also paint or seal fiberglass windows, while you won’t need to paint or seal vinyl. One thing to note is that you don’t have to paint fiberglass, but you can if you would like.


The final difference between fiberglass and vinyl windows is the costs. Vinyl windows cost less than fiberglass windows. However, fiberglass is stronger and looks nicer.

You can learn more about the costs of windows by contacting Apex Windows. They can give you a quote for fiberglass or vinyl windows. They can also help you learn more about the differences between these window types.

Compare Fiberglass vs. Vinyl Window Units Before Buying

As you compare fiberglass vs. vinyl window units, you’ll notice they look similar. However, they are different in several ways, yet both are great options.

Before choosing the right type for your home, you can compare these windows by looks, costs, and energy efficiency.

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