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. Pella’s proprietary fiberglass material is the strongest material for windows, engineered for lasting durability.9 Our exclusive fiberglass will never rot or corrode, and it resists dents, bends and breaks.
Fiberglass window benefits
verified Durable and Strong
The best fiberglass windows for your home are incredibly strong and durable. Resisting dents, bends and breaks, fiberglass window frames have virtually no expansion and contraction to help improve energy efficiency, reduce the risk for seal failure and provide long-term stability for dependable operation.
sunny_snowing Weather Resistant
Fiberglass is designed to provide outstanding resistance to water, wind and outside noises. It can withstand large temperature swings and the rigorous performance requirements of a commercial building.15
thumb_up Maintenance-Free
Durable fiberglass material will never rot or corrode and is naturally resistant to water and bugs. It resists chipping, chalking and fading - so you never need to paint or refinish your fiberglass windows.
Pella's Fiberglass
What makes Pella's fiberglass different from the competition.
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Won't Dent, Bend or Break
Our proprietary fiberglass won’t dent, bend or break as much as the competition. It is a thermoset material, meaning it won’t melt or breakdown when exposed to environmental temperature swings and can handle the most extreme heat and cold.32
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Heavy-Duty, Powder-Coat Finish
Factory-applied and baked on, our long-lasting powder-coat finish resists chipping, chalking and fading – even in dark colors – for enduring beauty.
Want to know more?
Learn more about our proprietary fiberglass material and see how we stack up against the competition.
Fiberglass Product Lines
Pella® Impervia® Fiberglass Windows
- Made of proprietary fiberglass
- Unmatched strength and lasting durability9
- Sleek, timeless style
- Exceptionally energy efficient
Fiberglass Windows
Pella Impervia
Fiberglass Window Inspiration
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Fiberglass Window Projects
Browse through our projects to view our windows used in real life and see the difference a new window can make on your home.
Frequently Asked Questions
Limited Lifetime Warranty
Pella products are backed by some of the strongest warranties in the business.
