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The Benefits of Renewal by Andersen® Exclusive Products

The leading windows installation and replacement company, Renewal by Andersen®, has built a track record of creating high-quality and energy-efficient products. Our windows are made of Fibrex®, which is proprietary to Renewal by Andersen products. Fibrex is known for its strength, durability and ease of maintenance.

The Benefits Of Renewal By Andersen Exclusive Products

Strength and Durability

Fibrex is twice as strong as vinyl material. This means that weathertight seals maintain their form. Its durability is displayed when faced with nature’s harsh elements. It maintains its form and rigidity in all climates

Energy Efficiency

Fibrex has superior thermal insulating properties that help keep your home warmer in the winter and cooler during the summer. Since your heating and cooling system doesn’t have to run all the time, you can save a lot on energy costs. Furthermore, our energy-efficient windows offer unique benefits that aid with cooling, heating, visible light transfer and ultraviolet (UV) ray reduction.

Beauty

Our windows come with narrower frames, which results in having more glass area and a wider view. Additionally, our extrusion process allows us to create windows in any shape and size, meaning that we can create a window that complements your home’s architectural style. We also have a wide range of colors and finishes to choose from which gives you a lot of combinations to amplify your home’s beauty.

Maintenance

Renewal by Andersen windows are known to stand the test of time. Our manufacturing processes ensure that our windows do not flake, peel, blister, rust or corrode. They remain easy to maintain as the day they were installed even after 20 years.

In need of casement windows or french doors? Check out our selection at Renewal by Andersen of St. Louis! Call us at (314) 983-9977, or fill out our contact form for a FREE estimate! We serve St. Charles and the rest of Missouri!

Reviews

"Have nothing but great things to say about the window installation done today by John Hutchinson with Renewal by Andersen! He was friendly, personable and professional and did a great job installing. He did a great job of putting down roller pads and tarps with next to zero clean up. Would highly recommend them for any window replacement needed!"

Mark V.
Jun 26, 2025

"We had our new Renewal by Andersen windows installed on June 5th & 6th, 2025 and we LOVE them! The quality, beauty, and functionality are best-in-class! The whole experience from dinner presentation at Lazy River Grill, the initial in-home sales consultation and measurement, the regular communications from the salesman and concierge, and the installation team’s professionalism and skills made the process so seamless. This is the second home we have opted for Renewal windows and doors and have been delighted both times! Thank you Renewal by Andersen STL! "

Jeff C.
Jun 7, 2025

"I had an excellent experience with RbA STL. Our designer, Courtney, was great and the finished product is awesome. The installation was easy and the gentlemen left our home cleaner than they found it upon entering. I would recommend RbA STL - you’ll get tired from their constant contacts, and that’s a GOOD thing!"

Jeramy D
Jun 3, 2025

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