Stylish, Energy-Efficient Fiberglass Windows for Homes in Shawnee, KS

Exterior view of single-hung window with tan frame and grids in top sash, white casing, black shutters, on exterior wall with cream-colored sidingWhen it comes to replacement windows, homeowners in Shawnee, Kansas, have many options to choose from, and fiberglass-frame windows are becoming an increasingly popular choice. At Johnson County Siding & Window Co., we’ve been replacing windows for homeowners throughout this region for more than 40 years, and we highly recommend fiberglass windows. But not just any fiberglass windows—the windows we install come from Marvin®, a manufacturer that’s recognized as an industry leader when it comes to quality and innovation.

Why Do We Like Marvin Fiberglass Windows?

The standout feature of this window brand is the Ultrex® pultruded fiberglass that goes into the frames and sashes. This material is eight times stronger than vinyl and three times stronger than wood, which leads to window frames that are:

  • Noticeably slim, contributing to a sleek and sophisticated look
  • Able to securely cradle large expanses of glass, thus providing an unusually expansive view of the outdoors
  • Remarkably durable, as they won’t warp, expand and contract, absorb moisture, or fall victim to insect infestation the way other window frames often do

Additionally, fiberglass has long been recognized for its superior insulative properties. This means homeowners can feel confident that fiberglass replacement windows are an exceptionally energy-efficient choice that can help them rein in their heating and cooling costs.

Choosing a Reliable Window Replacement Contractor

If you’re leaning toward fiberglass for your window replacement project, it’s important to note that it takes specialized expertise to install fiberglass windows properly. Johnson County Siding & Window Co. is a Marvin Authorized Replacement Contractor, which means we’ve demonstrated our installation expertise to attain this coveted credential. Unlike many other window installation companies, we also back our workmanship with a five-year labor warranty.

What’s more, as a longtime Marvin fiberglass window contractor, we’re quite familiar with the product lines and aesthetic options, and we can help you design the perfect fiberglass windows to bring out the best in your Shawnee-area home. Contact Johnson County Siding & Window Co. today to get started.


If you know you want to get your home exterior project done, but are feeling stress about paying for it all at once, we can help.

Our financing partner, GreenSky, has sensible payment plans that work for homeowners who prefer to pay in installments. You can also ask your JoCo Siding & Window Co. sales representative about the details!

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Our Customers LOVE The Results

Johnson County Siding & Window Co.
"I have had great customer service here, from billing, to project manager, to installation! Everyone was very kind and responsive. The team was great at communicating and easy to work with!”

- Sarah V.
Johnson County Siding & Window Co.
"Would recommend! Fast, Efficient, Great work, Friendly! Did not waste our time with long sales meetings in the beginning. Always responsive to any questions!”

- Kelsey G.
Johnson County Siding & Window Co.
"This is our 3rd project we’ve used JoCo Siding & Window for. They’ve now replaced all of the windows in our house and just recently a new front door and it’s been a great experience with the entire team each time. Kind, on-time and expert installation. Highly recommend!”

- Elizabeth K.

Areas We Serve

Serving the Kansas City Metro Area, Including Olathe, Overland Park, and Leawood See a Full List of the Cities We Serve