If you’re looking for strength and durability in your windows, fiberglass delivers. It promises much greater strength than vinyl, in some instances eight times as much. Other perks of fiberglass include its lack of rusting, corrosion, rotting, and warping, which are problems you could face with metal windows.

You know for sure you want fiberglass windows for your Chicago home then, but the question becomes from which manufacturer? You’re stuck between Marvin and Pella. Both brands offer high-quality products built with superior craftsmanship, yet you can only choose one. 

In this article, we’ll review and compare several series of Marvin fiberglass windows against Pella’s Impervia Series, in which both the exterior and interior are fiberglass. By the time you’re done reading, you’ll be able to choose your next fiberglass windows.

Marvin Fiberglass Windows

If you’re interested in fiberglass windows from trusted manufacturer Marvin, you can select from one of two series. The first is the Elevate Series and the second is the Essential Series. Here’s a closer look at both window products now. 

Marvin Elevate Series

The Elevate Series includes a fiberglass exterior with a wooden interior. This gives the windows what Marvin calls a “remarkable design.” 

Few window manufacturers have become as well-known for their fiberglass as Marvin. These fiberglass windows outmuscle vinyl at an astonishing rate of 38 percent. The company uses only pultruded fiberglass that will expand and contract like natural glass does. Even if the weather gets very cold or warm where you live, the fiberglass in the Elevate Series can handle it.

Marvin’s fiberglass has a longer life than fiberglass composite and roll-form aluminum as well as vinyl. When combined with the wooden interiors that are an Elevate Series trademark, you get windows that are as strong as they are beautiful.

In the Elevate Series are these windows:

  • Specialty shapes
  • Round top
  • Picture
  • Glider
  • Double hung insert
  • Double hung
  • Casement narrow frame
  • Casement 
  • Bow
  • Bay
  • Awning narrow frame
  • Awning 
  • Sliding French door 

Marvin Essential Series

Your other option for fiberglass windows from Marvin is their Essential Series. These are exclusively fiberglass windows. Marvin focused on values like performance, quality, and design when creating the Essential Series windows. 

The result is a window with clean lines and a slimmer profile. The Essential Series isn’t all about looks, though. Your fiberglass windows still promise 38 percent more strength than vinyl as well as a longer life compared to fiberglass composite and rolled-form aluminum windows. 

Marvin’s exclusive fiberglass will never crack, peel, chalk, or fade, even if you’ve had the windows for years. The windows in the Essential and Elevate Series boast more strength than wood/vinyl composites as well, three times more. 

You have plenty of window styles in the Essential Series to choose from, such as:

  • Specialty shapes
  • Single hung
  • Round top
  • Picture
  • Glider
  • Double hung
  • Casement
  • Awning 
  • Sliding patio door
  • Glider
  • Double hung

 

Pella Fiberglass Windows

Pella Impervia Series

Switching gears now from Marvin to Pella, we have to discuss the Impervia Series. Like Marvin’s Essential Series windows, the Impervia Series windows have a fiberglass exterior and interior. Pella uses fiberglass with five layers for greater strength and more energy efficiency. 

These toughened windows are ideal for seacoast environments, as they prevent UV rays from damaging your home. They can also handle very cold and hot temperatures without losing structural stability. The temps can dip as low as -40 degrees Fahrenheit and increase to 180 degrees and your Impervia Series windows will never buckle.

Compared to composite windows, the Impervia Series offers more impact resistance protection at a rate of 100 times greater. The windows require little maintenance on your part as well, which makes them a great pick. 

Pella pays attention to design too, covering their windows with a powder-coat finish. All windows in the Impervia Series collection have a narrow profile for streaming sunlight in naturally. You can also select from window frames that are one color or several. You have five color options for the dual-color frames. 

The windows in the Pella Impervia Series are:

  • Sliding
  • Single hung
  • Double hung
  • Casement
  • Awning 

 

How to Choose the Best Fiberglass Windows for Your Home

You may be closer to making your decision between Pella and Marvin fiberglass windows, but you’re still on the fence. Here are a few factors that you should keep in mind as you mull over your options. 

Price

You surely created a budget for your window replacement project. Neither Marvin nor Pella are known for their low-priced windows, but certain series and styles are costlier than others. Compare prices to see which windows suit your budget best. That will make your decision far easier. 

Style

Once you’ve narrowed down your choices based on price, the next factor you want to think about is style. A quality set of windows can last you several decades, and Marvin and Pella never skimp on quality. Since you can expect to have these windows for quite a while, you want to make sure you like their style.

You might opt for a style like your old windows for that sense of familiarity. You can also try something entirely different. None of the windows offered above ever go out of style, and that goes for Marvin and Pella. Any choice you make then is one you’ll feel confident in.  

All Fiberglass vs. Some Fiberglass

You also should take some time to think about how much fiberglass you want in your windows. If you don’t mind mixing the fiberglass with other window materials, then Marvin’s Elevate Series is the pick you should go for. 

Do you want exclusively fiberglass windows? Then you have two options, either Marvin’s Essential Series or Pella’s Impervia Series. Use the reviews from earlier in this article to guide you to the best all-fiberglass windows for your home. 

Conclusion 

Fiberglass is one of the top window materials available, as it’s strong, durable, appealing, and doesn’t need much maintenance. It’s no wonder then that Marvin and Pella are some of the biggest leaders in fiberglass windows today.

The information in this article should help you choose between Marvin’s Essential or Elevate Series and Pella’s Impervia Series. You can’t really pick wrong, so take your time to choose the perfect fiberglass windows for your home. Best of luck!