Performance Is In The Details

What do you get when you put energy efficient thermal glass inside a revolutionary low-maintenance composite frame? You get Renewal by Andersen® high performance replacement windows—a beautiful way to make your home more comfortable.

Fibrex® Composite Frames Made of Vinyl & Wood

Renewal by Andersen® replacement windows are made from Andersen’s exclusive Fibrex® material. This breakthrough composite combines the strength and stability of wood with the low-maintenance features of vinyl replacement windows.

Key benefits of Fibrex material:

• Low maintenance: no need to scrape or paint again. Warranted not to flake, rust, blister, peel, crack, pit or corrode.
• Excellent insulator, preventing heat or cold transfer into or out of your home.
• Strength of Fibrex material makes narrower frames possible, allowing more glass area
• Available in 22 standard color combinations
• Stainable wood interiors available, including oak, maple and engineered pine.
• Fibrex material contains over 40% reclaimed wood fiber, reducing impact on the environment
• Resistant to changes in temperature – doesn’t expand and contract like some materials***

New High–Performance™ Low-E4® SmartSun® Glass

We’re pleased to announce our newest option in glass.  High-PerformanceTM Low-E4® SmartSunTM glass is Renewal by Andersen’s most energy-efficient glass ever, up to 70% more energy efficient in summer as compared to ordinary dual pane glass* and has Renewal by Andersen’s highest energy efficiency rating in cool weather.  What’s more, SmartSun glass also blocks an amazing 95% of harmful UV rays, helping to protect furniture, carpets and wall coverings.

High–Performance™ Low-E4® Glass

Andersen High-PerformanceTM Low-E4® glass, the next generation of premium glass technology, is standard on all Renewal by Andersen windows and Frenchwood® patio doors. Key benefits include:

• Up to 56% more energy-efficient in summer and 45% more efficient in winter compared to ordinary dual-pane glass.* Depending on where you live, that can cut your energy bills up to 25%**.
• Innovative coating reduces water spots and makes cleaning easier
• Blocks 83% of UV rays that can fade fabric and damage furniture
• Significantly reduces the level of sound coming into your home

Our products are rated, certified, and labeled by National Fenestration Rating Council® (NFRC) – a non-profit organization that provides fair, accurate and credible energy performance ratings for windows and doors.

View all Renewal by Andersen window and door NFRC ratings (PDF) Renewal by Andersen windows and doors are equal parts substance and style. While the traditional Frenchwood® style or larger glass surface area makes many of our products visually distinct, all are constructed with minimal maintenance and energy efficiency in mind. Fibrex®, a vinyl-wood composite, is used for this purpose. Combining the strength of wood with the durability of vinyl, Fibrex® is a superior insulation material that is not affected by temperature changes. Beyond the frame, all Andersen windows and doors are made with thermal Low-E4® glass. 45- to 56-percent more energy-efficient than its dual-pane counterparts, Low-E4® keeps more heat in your house, thus lowering your energy bills over time, and additionally blocks 83 percent of all UV rays.

*Values are based on comparison to U-Factors and SHGCs for clear glass non-metal frame default values from the 2006 International Energy Conservation Code (IECC).

**A study of identical homes comparing Low-E4® glass to ordinary dual-pane glass showed a 25% savings on cooling bills, 10% on heating. Savings may vary geographically. 

***See the Renewal by Andersen 20/2/10 year LImited Warranty for details.