Fiberglass vs Vinyl Windows

white-vinyl-windowThe windows in your home can have a huge impact on the impression it gives to visitors and passersby. So why not give your home the look it deserves? Making the decision to replace your windows offers far more benefits than just added curb appeal. New windows bring greater indoor comfort and improved energy efficiency for your home!

One of the biggest decisions you have to make for your window replacements in which material they should be made of. Two of the most popular choices are fiberglass and vinyl windows

But what are the differences between these two? And which material will offer the most benefits for your home. Here’s a comparison of fiberglass and vinyl windows.

Both windows types offer similar insulating qualities and do an excellent job of resisting heat transference. This offers the much sought after energy efficiency qualities to your home, allowing you to save on your energy bills.

Vinyl vs Fibreglass – Which One is Best?

In the fiberglass vs. vinyl windows debate, fiberglass windows offer slightly more strength within the material itself. This means that fiberglass windows feature slightly larger glass spaces. In some cases, this can affect the amount of light that infiltrates your home too. This is why both materials are also the number 1 choice for storm windows


Professional installations are always recommended for both of these window types. Vinyl is a very flexible material and easy to work with. This leads to much faster installations. Fiberglass, on the other hand, is much more rigid and harder to work with. It doesn’t expand or contract as much, so it also takes longer to install.

Fire Resistance

Fiberglass windows have self-extinguishing capabilities. This means that, in case of fire, they will not fuel the fire while releasing fumes. One of the biggest disadvantages of vinyl windows is that they can burn while at the same tie releasing highly toxic fumes which can be deadly, especially for children.

On the other hand, fiberglass windows have self-extinguishing capabilities in case of fire, and will not emit toxic fumes.

Why Choose Vinyl Windows?

fiberglass-windowsVinyl makes a great choice for your replacement windows. From affordability to incredibly low maintenance, you simply can’t go wrong.

Of course, your final costs will depend on a variety of factors. This includes the shape and size of your window, how many you are replacing, the brand you choose, and even your regional location.

Choosing vinyl offers a more budget-friendly and versatile option when compared to fiberglass windows – which can cost up to 30% more. Vinyl windows are also lighter than fiberglass.

This makes for easier installation and fewer potential problems. This might not seem like a big deal at first. However, many of the problems that occur later on are due to bad installations from improper or poor techniques. With easy installation, vinyl generally comes with less hassle.

Vinyl windows are also available in a wide range of color palettes. This gives you the versatility and flexibility to coordinate your new windows with the existing exterior of your home.

You can even create a whole new look for an elevated curb appeal. Best of all, with vinyl windows, you won’t have to worry about rot or insect damage.

Fiberglass vs Vinyl Windows Cost

 Fiberglass WindowsVinyl Windows
Low end$150 - $550$350-$600
Mid range$600 - $825$475-$950
High end $1,000- $2,000$1,500 - $2,500

Vinyl vs. Fiberglass Windows – Making the Right Choice

Deciding between vinyl and fiberglass windows involves evaluating factors such as insulation, installation, fire resistance, and cost. While fiberglass windows offer more strength and fire resistance, vinyl windows are more budget-friendly, versatile, and low-maintenance. Ultimately, the best choice depends on your priorities and preferences for your home’s replacement windows.