Fiberglass Windows

Pella Impervia windows are made from Duracast®, a patented five-layer, engineered fiberglass composite that is more durable than aluminum (see note 1), offers the thermal efficiency of wood, is priced competitively with vinyl, and comes in an impressive array of styles, sizes and options to fit your project requirements.

Pella Impervia windows are uniquely functional, durable and affordable. Plus, they never need to be painted, so there are no finishing or maintenance costs. Low-E insulating glass improves insulating value, reduces heat gain and offers protection from UV rays, making the windows extremely energy-efficient. In fact, most Pella Impervia products with Low-E insulating glass meet or exceed ENERGY STAR® guidelines in all 50 states (see note 2).

Note 1: In testing performed in accordance with American Society for Testing and Materials (ASTM) testing standards, Pella’s Duracast® has displayed superior performance in strength, ability to withstand extreme heat and cold, and resistance to dents and scratches.

Note 2: Some Pella products may not meet ENERGY STAR® guidelines in Canada. For more information, contact your local Pella representative or go to www.energystar.gc.ca.