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What Is Whole-Window Performance and Why Does It Matter?

Renewal by Andersen® of Atlanta products have excellent energy ratings because of outstanding whole-window performance. It is about focusing on the big picture rather than concentrating on some individual parts.

What Is Whole-Window Performance and Why Does It Matter

The impressive whole-window performance of our products is the result of the following:

Fibrex® Material

This exclusive product is a combination of reclaimed wood fibers and proprietary thermoplastic polymers. Our Fibrex material’s insulating qualities are practically on the same level as those of pine, vinyl, and fiberglass.

Furthermore, this framing solution is the reason why our windows can remain as airtight for decades as the day they are installed. It resists fungal growth and rot and is twice as rigid and stable as vinyl. In other words, Fibrex material can retain its structural integrity despite regular moisture exposure and can expand and contract minimally due to extreme temperature swings.

High-Performance™ Glass

Renewal by Andersen of Atlanta puts a premium on double glazing. We optimized the width of air space between the two sheets of glass to keep heat transfer to a minimum.

Moreover, we apply spectrally selective Low-E coatings on the inside surface of the exterior panel to reflect the sun’s infrared light and indoor heat. We pump an argon gas blend into the void separating the glass panels to boost the thermal properties of our windows and doors. We use a stainless steel spacer to keep the panes stable, to help reduce condensation and to minimize heat transfer further.

Our High-Performance glass comes in numerous varieties, each has a unique set of energy ratings while bearing the ENERGY STAR seal.

Professional Installation

Unlike other window companies, we do not use any subcontractor nor require our customers to hire another party for installation. We train and certify our installers ourselves so they can uphold our high workmanship standards in every home improvement project.

Choose Renewal by Andersen of Atlanta to experience the better way to buy better windows. Call (888) 908-3332 now to arrange your FREE in-home consultation with us in Atlanta, GA, or any nearby community.


"I had a very good experience with Renewal by Andersen, the large specialty window I purchased was expertly installed and looks beautiful."

Josh & Lauren, Grayson GA
May 25, 2016

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