Fiberglass Window Replacement for St. Paul & Minneapolis Homes

Premium Performance, Top-Notch Efficiency & HGTV-Level Looks at Realistic Prices

Black fiberglass windows with grids in Minneapolis home's dining room.

If you’re a Twin Cities homeowner, is it possible to get everything you want from new replacement windows with no downsides? Because window materials like wood and aluminum have their advantages, but they also have drawbacks.

Wood, while beautiful, requires a lot of upkeep and comes at a price that will drain your bank account. Aluminum, while extremely stable, is a bad insulator. These windows force you to compromise.

When you’re investing in new windows, the thought of not getting exactly what you want can be a tough pill to swallow.

Stylish, Energy-Efficient Zen Master Series Fiberglass Windows

At Zen Windows Twin Cities, we offer windows that don’t make you compromise. We’ve finally made it possible for you to get every possible benefit from a window… with none of the disadvantages.

Our Zen Master Series fiberglass windows are for homeowners looking for a window that:

  • Has the style and sophistication of wood windows without the wood-related upkeep
  • Has the rigid stability of aluminum windows without the poor thermal conduction that eats up your energy costs.
  • Packs the energy-saving power and bare-minimum maintenance of vinyl windows.

All at a lower price than fiberglass replacement windows from other Twin Cities window companies.

Bottom line: You won’t find a window that marries strength, efficiency, and beauty — while eliminating every problem — like the Zen Master Series fiberglass window. It’s the first and only “have-your-cake-and-eat-it-too” window.

Five Benefits of Installing Zen Master Series Fiberglass Windows

Windows That Are Custom Designed for Your Home

Corner of a black fiberglass window frame.

Zen Master Series fiberglass windows pack curb appeal that’s worthy of having its own HGTV show.

The interior of the Zen Master Series can come in a fiberglass or authentic wood finish for true sophistication. Every Zen Master Series window is custom-cut based on your project’s measurements. That means no “stock” windows — you get windows that are completely unique to you and your home’s needs.

The Zen Master Series comes in many beautiful colors and finishes. Choose from six exterior fiberglass finishes and seven interior finishes (fiberglass and wood options available). You can also choose to get grilles between the glass panes to add that extra “wow” factor to your new windows.

Check out your color, finish, and style possibilities.

Bare-Minimum Window Maintenance

Woman smiling while cleaning a window.

Zen Master Series fiberglass windows come with the posh and panache of wood windows, without the annoying wood-related upkeep. While wood windows need regular painting, sanding, and scraping to maintain their looks, the Zen Master Series is truly low-maintenance.

Our fiberglass windows have similar upkeep needs to vinyl. To maintain a gorgeous appearance, our fiberglass windows simply need the occasional cleaning with soap and water.

As with vinyl, you won’t have to worry about issues like rotting and warping — fiberglass is the toughest window material on the market. It’s not even close.

Cutting-Edge Energy Efficiency

From the innovative fiberglass frame to the cutting-edge glass system, the Zen Master Series packs all the latest advancements in window technology for peak performance.

Are you concerned that blasting your AC all summer will balloon your energy bills? Don’t sweat it. The Zen Master Series has a solar heat gain coefficient (SHGC) that’s up to twice as effective as what ENERGY STAR® requires. Our fiberglass windows block outdoor heat from getting in, giving your AC a much-needed rest during summer.

Do you hate that your heating bills skyrocket during the ice-cold Minneapolis winters? With the Zen Master Series, you get a U-Factor that seals in your home’s warmth and keeps that precious heat energy where it belongs — inside.

Diagram showing the different parts of a fiberglass window.

Zen Master Series fiberglass windows are the windows you want when Mother Nature doles out extreme temperatures.

Our fiberglass windows are also an environmentally friendly material. They’re recyclable, and their best-in-class energy efficiency shrinks your own carbon footprint. Win-win.

Durability That Defines “Rugged”

Molded fiberglass infographic.

Zen Master Series fiberglass windows are up to 9 times stronger than vinyl. While vinyl windows typically last 30 years or more, the Zen Master Series lasts at least 40 years.

Zen fiberglass also beats wood in durability. Wood can soak up moisture like a sponge, which can lead to swelling, warping, and rotting. The frame of the Zen Master Series is moisture-proof, so water damage is a non-issue.

What makes our fiberglass window so strong? It’s all in our manufacturing process. To create the window frame, special individual fibers are coated in a proprietary polymer resin.

The fibers are then repeatedly pulled through an industrial-strength die in a process called pultrusion. The pultrusion process binds the fibers together into a cohesive whole. The result is a window frame built like a Minnesota Vikings linebacker.

Lower Prices

Pair of scissors cutting a dollar bill in half.

Our reputation for lower prices is well known. While our fiberglass window line requires about 60% more of an investment than our replacement vinyl windows, here’s the great part: Our vinyl windows are less expensive than other companies’.

This means our fiberglass window prices are actually on par with other companies’ prices for their best vinyl window lines. You can get Zen Master Series fiberglass windows for roughly the same price as another company’s top-end vinyl window.

Fiberglass Window Color, Finish & Style Possibilities

Contact us to discuss custom-stain options.

Exterior Fiberglass Finishes

fiberglass color options

Interior Wood Finishes

fiberglass color options

Interior Fiberglass Finishes

fiberglass color options


fiberglass window glass designs offered by ZEN


window varieties offered by zen windows

Special Shape Styles (Contact Us for More Options)

shapes and sizes Zen Windows offers

Fiberglass Window Gallery

Click on an image below to enlarge it.