Fiberglass Windows2019-12-10T20:49:21+00:00

Top Rated Fiberglass Window Contractor

Serving Chicago Suburbs Since 2003


4.9 out of 5 Stars.
Based on 643+ Reviews.

Finding the right fiberglass windows for your home has never been easier.

Benefits of Fiberglass Replacement Windows

Fiberglass Windows
  • Strongest & most durable material available in windows
  • Smart Alternative To Vinyl
  • Energy Efficient
Fiberglass Replacement Windows
  • Looks like new for years
  • Highly durable
  • Low maintenance

The Perfect Fiberglass Windows for Your Home

Sliding Windows

Sliding Windows

Casement & Awning Windows

Casement and Awning Windows

Double & Single-Hung Windows

Double- and Single-Hung Windows

Bay, Fixed & Combination Windows

Bay, Fixed and Combination Windows

Multiple Style Options Available

(examples of options from Andersen)

Color Options




Featured Fiberglass Window Replacement Project

A Homeowner’s Need to Find a Trustworthy & Reliable Window Replacement Contractor

Naperville homeowners Jim and Jo Ellyn first contacted Opal back in 2014 regarding making upgrades to their home. Keeping in contact over the years, the couple felt it was time to begin their 1991 home’s renovations, as the original Andersen windows were now worn, drafty, and discolored. Replacing them would not only help with aesthetics but it would improve the home’s energy efficiency. In addition to needing new windows, a few of their home’s dormers were suffering from rotting wood.

The […]

How Deerbrook Homeowners Smartly Put the “Win” in Windows

Homeowners John and Kathy were looking to have 17 original windows on their residence built in 2000. Old and drafty, the couple wanted these windows replaced as soon as possible! Having researched contractors online they reached out to Opal first for an estimate based on the high ratings and stellar testimonials they read.

With a little experience working with contractors in the past on minor jobs, this was by far the biggest project they were having done to date and knew that […]

Naperville Newlyweds Needed New Windows – Opal to The Rescue!

The Situation:

Newlyweds Chris and Colleen N. were in need of new windows to replace the original ones for their townhome. Built in 1989, their townhome needed seven new windows and potentially a new patio door. In addition to being drafty and dirty, the windows were very difficult to open and close. Furthermore, the seals around the windows were in very poor condition. Having considered their options, they decided to go ahead and replace their windows. Their neighborhood had a […]

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