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Fiberglass Windows

Why Choose Fiberglass Windows?

Trusted in tools, boats, bridges and more, fiberglass is a naturally strong and durable material, making it a superior choice for windows and patio doors. Pella’s proprietary fiberglass material is the strongest material for windows, engineered for lasting durability.61 Our exclusive fiberglass will never rot or corrode and it resists dents, bends and breaks.

Fiberglass Window Benefits

Unmatched Strength61
Stronger and more impact resistant than a leading wood/plastic composite, conventional fiberglass, wood and vinyl, Pella’s proprietary fiberglass is a clear choice for long-lasting durability. Our exclusive formulation withstands extreme temperatures and the test of time. All thanks to our one-of-kind manufacturing process.

It Can Take the Heat (and Subzero Cold)
Our proprietary fiberglass is a thermoset material, meaning it won’t melt or breakdown when exposed to environmental temperature swings like other materials can. Tested from -40ºF to 180ºF, our relentlessly durable fiberglass is designed to withstand subzero cold, the most extreme heat and the rigorous performance requirements of a commercial building.61,43

Heavy-Duty Powder-Coat Finish
Our long-lasting powder-coat finish meets AAMA 624 which is the highest rated fiberglass coating among leading national competitors. Baked on in the factory, our tough-as-nails finish resists chalking and fading and will help keep your sleek windows beautiful.

Pella® Impervia®

Pella Impervia windows are tested and designed for a lifetime of everyday use. Engineered to last with sleek, timeless style, our fiberglass awning, casement, sliding, single-hung, double-hung and picture windows are backed by one of the strongest warranties in the business.

Pella® Impervia® Window Types

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Fiberglass Window Features & Options

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LIMITED LIFETIME WARRANTY

Pella products are backed by some of the strongest warranties in the business.

Learn more about Pella warranties

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