When it comes to durability, style, and energy efficiency, look no further than fiberglass windows. They come highly recommended by various construction experts primarily due to these three factors. Despite the fact that this window technology is rather new in the market, it is quickly gaining popularity due to its many pros.

This article will take an in-depth look at the advantages one can expect from using this kind of windows. We’ll go through the various aspects of fiberglass windows, such as their role in building maintenance, upgrading, or repairing, basic guidelines for their usage, and price estimations, as well as make fiberglass vs vinyl windows comparisons.

What are Fiberglass Windows?

Fiberglass windowsFiberglass is a kind of plastic reinforced using glass fiber. They are very strong in nature yet very light. However, it is not as stiff as carbon fiber products. Its durability is brought about by the fact that it is less brittle. Unlike regular glass, fiberglass can withstand various kinds of impact plus is highly efficient with regards to retaining energy.

With that in mind, it is safe to state that fiberglass windows offer a very durable and energy efficient alternative to traditional kinds of windows. They provide users with a maintenance-free exterior due to their high durability and aesthetic nature. In addition to this, they offer users with a very wide range of finish option for both the exterior and interior.

It is also important to note that one of the reasons fiberglass windows come highly recommended is because their contraction and expansion rate is more or less similar to that of glass. Ultimately, this plays a major role in enhancing the windows’ longevity. This is one of the key points considered when making fiberglass vs. vinyl windows comparisons since the latter tend to have a higher expansion and contraction rate which makes them more fragile. Generally speaking, fiberglass windows tend to be more rigid than most alternatives.

Advantages of Fiberglass Windows

Looking at fiberglass windows reviews, it is evident that their pros outweigh the cons:


Top of the list with regards to pros is their proven strength. It is a well-known fact that a fiberglass window is way stronger than vinyl and wood alternatives. Specifically, fiberglass windows are three times stronger than wood plus vinyl composites, and seven times stronger than plain vinyl windows.

By virtue of being plastic windows reinforced with fiber, a fiberglass window is less brittle and tends to have a more durable setting to its design. It has the ability to resist peeling, cracking, chalking, and fading, unlike other window alternatives.

Long Life Expectancy

Research shows that fiberglass windows have a longer life expectancy, estimated at approximately 37%. They provide users with unparalleled durability and sturdiness. An additional point to note is that fiberglass technology leads the window industry in as far as third party finish ratings are considered. It is unmatched to any of the alternatives available in the market currently due to its reinforced profiles.


Another major advantage of using fiberglass windows is the degree of varying design options they offer. Unlike most types of windows, fiberglass windows go well with both contemporary and traditional designs. Whether it is an exterior trim or divided kind of tiles, fiberglass offers the right design. They are available in a wide variety of designs and stylish in nature.

There are over 6 window types available in the market at the moment. This includes double hung, single hung, bay, awning, casement, and sliding. With such a wide array of window types to choose from, it is rather easy to pick one that goes with your whole decor.

Energy Efficient

One of the major reasons why fiberglass window manufacturers came up with this kind of an alternative was finding a way to use windows in curbing heating plus cooling bills. Fiberglass technology went a long way in solving this problem since it provided contractors with an energy efficient window, as well as door, option.

The majority of fiberglass windows available on the market exceed the set federal ENERGY STAR recommendations. The benefit of using such is the immense effect they have on the environment plus your home cooling and heating bills. On the long run, using fiberglass windows tends to reduce your home bills and make your home more environment-friendly.

How Much Do Fiberglass Windows Cost?

Fiberglass windowsCurrently, the best fiberglass windows go for a minimum of $200 per window and a maximum of $900 per window. On the other hand, installation varies depending on the company. Generally, most companies charge between $30 and $100 for a single window. These costs are inclusive of all the necessary taxes. To some, these prices might seem quite exorbitant. However, the prices are higher than usual due to the many advantages brought about by the use of fiberglass windows. On average, a fiberglass window is 55% to 100% more expensive than other window alternatives. This majorly depends on the company one receives their estimates from.

An additional factor that plays a major role in determining the prices is the kind of window one orders. Fiberglass casement windows tend to cost more than double hung windows. Double hung windows range from $700 and $1000, while casement windows range between $800 and $1300. Generally speaking, fiberglass tends to come with a wide range of benefits all of which tend to cost quite a bit. However, the extra cost is worth every single penny due to the quality of service offered.

In conclusion, fiberglass windows meet builders and designers’ needs, especially those looking to go against the norm by breaking the intrinsic limitations brought about by wooden, metallic, and plastic frames. Their benefits compare to no other considering their thermal performance, overall durability, aesthetic value, friendliness to the environment, and flexible design. Generally, this kind of a window offers users with a superb option for those aiming at saving a whole lot of money and still maintain a hundred percent functionality. All in all, fiberglass windows tend to cost more than most of the available alternatives but still worth every single penny.