Durable Fiberglass Windows for Oconomowoc, WI, Homes

If you’re considering replacing the windows on your home but have no idea where to start, let Siding Unlimited help! We offer premium fiberglass windows in a variety of styles, such as double-hung, that can provide numerous benefits to your home for years to come. We’ve been expertly installing fiberglass windows in the Oconomowoc, Wisconsin, area for years and are eager to add you to our long list of satisfied customers.

What Are Fiberglass Windows?Fiberglass windows on a home.

Before learning about the benefits of fiberglass windows, it’s important to understand what they are. Fiberglass windows are a unique window type, composed of glass fibers and resin. These materials are extremely durable because they expand and contract very minimally with temperature changes. This makes them a great choice for homeowners in Wisconsin.

Our Fiberglass Windows

At Siding Unlimited, we source our industry-leading fiberglass windows from the respected manufacturer, Pella®. These windows are built to be resistant to corrosion, dents, warps, and scratches so that they can serve your home for years to come. Our fiberglass windows also use Pella’s patented five-layer fiberglass material for extreme strength as well as a powder-coat finish to keep them looking brand new long after they are installed.

Work With the Experts

If you’re ready to learn more about how fiberglass windows can benefit your home, contact Siding Unlimited to get started! We offer free, no-obligation consultations right at your Oconomowoc, WI, home, with our experienced team who can answer any questions you may have regarding our products or installation services. We can’t wait to upgrade your home!

Contact Us
 The entire experience was outstanding and exceeded our expectations. Lou Davis provided thoughtful advice as we navigated selections on windows, siding, and front door. Crew cleaned up daily. Top notch from start to finish. 
 Hands down the best company we have ever done business with - professional, knowledgeable and very accommodating. We had new siding installed and other work. Wish we had come across this company years ago! Five stars aren't enough. 
 The team at Siding Unlimited is very professional, detail oriented, and extremely knowledgeable about their products and installation. 
 Our house looks wonderful and the guys were fantastic. 

Looking for ways to make your home improvement project more affordable? We offer a number of financing options for qualified customers.

Learn More
Visit Our Showroom
Two Locations Available!

665 Larry Court
Waukesha, WI 53186
Get Directions


2018 S Stoughton Rd
Madison, WI 53716
Get Directions