Shop Fiberglass Windows

It depends what benefits are most important to you. Pella's fiberglass is the strongest material for windows, offering a low-maintenance and durable finish.⁹ If you're after a window that's tested to extremes, Pella's fiberglass windows are the way to go. Vinyl windows are easy to care for, energy efficient and budget friendly. Pella’s unique vinyl formula is performance-tested for excellent weathering, durability and color retention.

Yes, Pella's 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. In addition to the material of the window frame, glass types and coatings also affect the energy efficiency of a window.

There are many factors that affect the actual long-term performance, appearance and functionality of fiberglass windows, but Pella's fiberglass windows are designed for a lifetime of everyday use.

Pella® Impervia® is the only product line made of our proprietary fiberglass. This product line offers windows and sliding patio doors. There are also many front entry doors available in fiberglass.

Pella’s proprietary fiberglass is the strongest material for windows, engineered for lasting durability.⁹

Pella’s proprietary fiberglass 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.