Andersen 100 Series Fibrex Replacement Windows

Windows that outperform with durability and style—that’s Andersen 100. Featuring the strength of Fibrex®, an eco-conscious composite, these windows come in a full line of popular styles and beautiful, rich colors. 2x as strong as vinyl, Fibrex® performs when exposed to extreme temperatures and delivers exteriors that won’t fade, flake, blister or peel.

When you choose Andersen, you not only get high-performing, dependable products, we support them with exceptional service. New windows and doors can be a major investment, but if you choose wisely, you’re rewarded with better light, comfort, added security and energy efficiency. When it comes to making such an important decision, make sure you go with a brand and company you can trust.

No pressure quotes
10 year transferable warranty
Blocks up to 95% of UV rays
40% reclaimed wood fiber
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Energy Saving All Around

Andersen 100 Series window efficiency U Values vary by window type and size, meeting ENERGY STAR requirements. Additionally, dual pane glass is standard for added sound protection, efficiency, and strength.

UV Protection

Standard glass packages feature double Low E glass with upgrades available to triple Low E Smartsun® glass for even greater energy efficiency. Smartsun blocks 95% of UV rays, further protecting your furniture.

Keeping the Heat Where You Want It

The Fibrex frame and sash block heat transfer in and out of your house nearly 700 times better than aluminum.

Environmentally Responsible

Fibrex is engineered with Andersen’s unique blend of material, which contains 40% recycled wood fiber. This environmentally responsible window is two times stronger and more rigid than vinyl. Plus, it won’t fade, blister, or peel.

Window Grid Choices

Add Andersen 100 Series Finelight Grilles for a grid pattern between the glass. With an elegant profile and two-sided color, they match both the white matte interior window and your exterior color choice.

Exceptional Warranty Coverage

We believe in the Andersen 100 Series window product and stand by it.

• Andersen 100 Series windows are covered by the Andersen 10 year product/20 year glass warranty, which is transferable beyond the original owner.
• Coverage for the original owner extends beyond that time frame with Washington Energy Services Limited Lifetime Warranty coverage, at no extra charge.*
• Your WES installation is covered by a Limited Lifetime Installation Warranty.*

Beauty To Complement Your Home

Fibrex composite provides a clean, smooth look with virtually seamless corners.

Interior finish: Andersen 100 Series windows and patio doors are offered in a white matte or sandtone finish.

Exterior colors: 100 Series windows and patio doors come in several exterior colors, extending beyond the traditional white and tan vinyl options. Rich Cocoa Bean, Dark Bronze and other vibrant hues allow you to create your own signature look, with darker and richer colors that are made to last.

Window trim: Washington Energy Services offers stylish interior wood trim by Trimtek and exterior trim by James Hardie in 9 colors to complete your window upgrade. Ask your Home Project Advisor for details.


Slider window options



Double Valance

Queen Anne

Queen Anne II


Perimeter II

Horizontal slider windows options


Top Only Colonial

Queen Anne

Queen Anne II


Perimeter II


Specialty window options



Hub with Spokes


Colonial with Spokes

Colonial with Hub

Queen Anne II







Cocoa Bean

Dark Bronze


Privacy glass options

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Narrow reed privacy glass window installation seattle


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seatac andersen 100 series fern glass windows



  • Why do you measure twice?

    Our Home Project Advisor will measure once when they get a general layout of your home and provide pricing on your window selection. The next step is our comprehensive Critical Measure where our skilled craftsmen measure each window with accuracy and precision to ensure a perfect fit for a quality window replacement. They will review your sizing and selections, including grids, glass, and hardware to ensure complete accuracy and your satisfaction. We know that purchasing new windows is a major investment, so we are wholly committed to providing you with not only a great product, but a wonderful experience as well.

  • Are these the same as Renewal by Andersen?

    No, Renewal by Andersen is a home improvement company that, like us, distributes and installs Andersen windows. Their product is made by Andersen using the same material but with a slightly different look.

All for home.

Award-winning service and installation.

Since 1957, homeowners have come to know us for the type of best-in-class service they deserve. Frequent winners of the Angie’s List Super Service Award and perennially among the top local contractors rated by the BBB, Angie’s List and GuildQuality.

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A job done right

Our Home Project Advisors are ready to tailor choices to your lifestyle and budget and our installers have the experience and talent to make sure the work is done right.

Local, trusted, passionate

Since 1957 we have made homes all over the Puget Sound more efficient and comfortable. Our employees are craftsmen with a contagious enthusiasm for rolling up their sleeves and exceeding expectations.

Trained, licensed, bonded and drug tested

Each technician receives a minimum of 100 hours of on-the-job-training each year to ensure everyone is up to date on best practices. All of our employees undergo background checks and drug screens.