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Renewal by Andersen® Window Replacement & Patio Door Installation in Mercer Island, WA

Find your ideal replacement window and patio door upgrades in Mercer Island through Renewal by Andersen. Transform your living spaces with industry-leading full-service window replacements and patio door installations.

Renewal by Andersen® Signature Service

Superior product.

Discover the unmatched quality of our windows, made from an innovative composite material. Relish the fusion of expansive, energy-saving glass surfaces and refined, narrow frames.

Hassle free process.

Collaborate with our expert team that will navigate you through each phase of your window and door replacement project. Take advantage of our best-in-class methods to guarantee a smooth and effortless transition.

Unrivaled beauty.

Design a window or patio door that’s uniquely yours with the help of our skilled Renewal by Andersen designers. Delve into an extensive array of styles and customization features to achieve the ideal aesthetic for your home.

Long term value.

Invest in the lasting resilience of Renewal by Andersen windows, designed to endure harsh weather elements for decades while maintaining their pristine look and performance. Benefit from our all-inclusive warranty that covers glass, Fibrex® material, and installation.

4-Step Process

Design Consultation

Our professional designers will walk you through our entire installation process while helping you design the best windows and doors for your home during this free, in-home consultation.

Project Planning

This stage focuses on precision and accuracy from carefully measuring your current windows to building custom products that will fit and function properly.


Certified Master Installers have the utmost respect for your home and will treat it with care throughout the replacement process. We’ve streamlined our well-defined process to ensure little disruption to your everyday routine.

Customer Care

If you have any questions during or after your installation, our customer care team remains available to answer you promptly and personally. For information about maintenance or the limited warranty, this is your go-to team!

Our Products

Replacement Windows

Renewal by Andersen is an industry-leading window replacement company with an office located in Seattle near Mercer Island. When you call Renewal by Andersen, you’re not just signing up for professional window installation services. You’re getting the opportunity to custom design the ideal replacement windows for your home’s architectural style. Select any of our seven custom window styles and available design options to create a one-of-a-kind window. Browse our galleries for inspiration or get started today with an in-home consultation.

Awning Windows

Experience the unique character of awning windows featuring a hinged top, spacious base, and a convenient crank-style handle. These windows excel in improving airflow and are an excellent choice for placement above the kitchen sink, allowing refreshing breezes while you work.

Bay & Bow Windows

Introduce dimension and visual appeal to any room with bay and bow windows. These projection windows consist of multiple window panels, creating a captivating visual effect. Maximize their functionality by incorporating shelves and a bench for optimized space utilization.

Casement Windows

Embrace the sunlight and fresh air with our highly energy-efficient casement windows. These custom-designed windows feature a crank-style handle for easy operation and a tight seal when closed.

Sliding Windows

Optimize space with practical and space-saving sliding windows, ideal for small or cramped areas that require direct airflow. Also known as gliding windows, they open smoothly by sliding along a rail, providing easy operation and efficient ventilation.

Double Hung Windows

Customize your double hung windows for maximum versatility. This classic window style allows for fresh air circulation through the top or bottom sash. The interlocking system at the center ensures secure and reliable operation.

Picture Windows

Add timeless elegance to your space with picture windows. These stationary windows serve as a stunning focal point, enhancing energy efficiency and allowing abundant natural light into your home.

Specialty Windows

Unleash your creativity with our highly customizable specialty windows. Choose from a variety of custom shapes and sizes to create a truly unique window design. Pair them with other window styles to make a statement and add a touch of dynamism to your home.

Mercer Island Patio Doors

Renewal by Andersen patio doors in Mercer Island add dimension, natural light, and an entryway to your outdoor space. We deliver three standard patio door styles with industry-leading installation process. Combined with custom design options and durable, energy-efficient materials, these glass doors will provide long-term value to your home for years to come.

Sliding Glass Patio Door

Enhance your modern-style home with the sleek and contemporary sliding patio door. This door design combines elegance with smooth operation, providing a seamless transition between your indoor and outdoor spaces while optimizing space utilization.

French Sliding Patio Door

Add convenience and elegance to your home with the French sliding patio door. Customize it with a selection of grille designs and colors that perfectly complement your house’s aesthetic.

French Hinged Patio Door

Create a timeless look for your traditional-style home with the hinged French patio door. This door style features adjustable hinges, allowing for customized swing configurations tailored to your preferences. Elevate the overall design of your home with this perfect addition that exudes classic charm.

Learn More


I love my new windows, made a HUGE difference in the drafts, keeping wind noise out, and keeping heat in. I also choose a different style and the view is much nicer, easier to open and close

Tonya B.

We are extremely pleased with our large dining room window. The old window was not efficient; letting cold air into the house in the winter as well letting heat from the furnace outside! The installer was very professional, efficient and cleaned everything up nicely. The entire experience from sales to installers through follow-up was a pleasure.

Seth Y.

Replaced 12 "old" draft double hung windows with new double hung windows. Remarkable improvement in maintaining and constant comfortable temperature in the rooms. Great workmen and a great finished job.

Tangelia N.

Proudly Serving Mercer Island, WA, and the Surrounding Areas

Mercer Island values professional, efficient window installation and patio door installation services from Renewal by Andersen in Seattle. With a reputation as an industry leader and durable, high-quality elements such as Fibrex® material and unique limited warranty, homeowners trust Renewal by Andersen with their most valuable possession: their homes. Call today to get a free design consultation and energy analysis, and enjoy your custom windows and doors sooner than you think.

  • Beacon Hill
  • Beaux Arts Village
  • Bellevue
  • Columbia City
  • Kennydale
  • Lakeridge
  • May Creek
  • Newcastle
  • Newport
  • Rainier Valley
  • Roanoke
  • West Bellevue

Renewal by Andersen Signature Fibrex® Material

Our Fibrex® material, made of 40% recycled wood, offers superior strength compared to standard vinyl windows, making it twice as durable.
The enhanced strength of Fibrex® material allows for narrower window frames capable of accommodating larger glass panes.
Enjoy the low-maintenance nature of Fibrex® material, eliminating the need for painting and providing resistance against cracking, pitting, corrosion, and rotting.
Our windows have undergone rigorous testing over two decades, proving their long-lasting durability.

Get in Touch with Us

Call Renewal by Andersen in Greater Seattle to schedule your in-home consultation today. Our professionals are committed to simplifying every step of the process, so you can enjoy your new home improvement sooner than you think. Contact us to learn more about our hassle-free, 4-step process.

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