All Milgard Windows & Doors carry a Lifetime Warranty! Learn More.

Milgard Fiberglass Finishes

Fiberglass material tolerates the heat and cold which resists swelling, rotting, and warping. This makes fiberglass windows durable and low-maintenance. 

Ultra™ Series windows and patio doors have fiberglass frames inside and out with four exterior colors available. Each exterior color can be paired with a white interior. However, you can color-match both the interior and exterior colors in Harmony, Bark or the popular Black Bean.

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Quality Finishes

Milgard will only put our name on a window if it can live up to our standards. Every Milgard fiberglass frame is tested for color uniformity, gloss, film thickness and chemical resistance for quality and long-lasting performance.

Ultra Series uses a powder coat finish on Harmony, Bark and Black Bean when the exterior and interior are the same color. Otherwise, they are painted with a wet coat application.

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Attractive grids

Ultra Series offers a wide variety of grid types, patterns, and combinations. The grids you choose will match the exterior fiberglass frame color of your windows.

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The Full Lifetime Warranty

At Milgard, we stand behind every window and patio door we build, and designer exterior fiberglass finishes are no exception. We are one of the only manufacturers to offer a Full Lifetime Warranty (for residential application;10-year for commercial applications) on fiberglass finishes.