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Fiberglass Window Prices & Costs

Fiberglass window prices run roughly $500 to $1,000 per opening for a normal double hung or casement window with installation. Fiberglass windows are typically 1.5x more expensive than their vinyl counterparts, but less than wood clad windows (although often wood clad uses a fiberglass cladding on the exterior). Fiberglass windows are typically a proprietary composite of some type that offer excellent strength and durability that provide long term value, but obviously are quite expensive at the outset. In general, expect fiberglass windows to run 1.5x more than vinyl windows. Compare vinyl vs. fiberglass windows to see which one is right for you.

-- Price Range: $800 to $2,000 Installed --

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Disadvantages of Fiberglass Windows

Topping the list of disadvantages of fiberglass windows is certainly cost. They will typically run 35% than vinyl windows. Often, homeowners will be very keen on fiber glass UNTIL they see the price quotes when compared to their bids on vinyl windows. It’s that rather stark difference in a line item cost that really dissuades many homeowners from buying fiber glass windows.

This becomes particularly problematic because the two materials are nearly identical to one another. While fiberglass may hold up better over time, vinyl windows can last 30 years easily.

Now it must be said that fiberglass windows are not as expensive as wood clad frames. But the cost is one of the main disadvantages of fiberglass windows. In terms of strength, aesthetics, and energy efficiency -- fiber glass frames make lots of sense.

Fiberglass Window Prices :: Entry Level

Two manufacturers that produce a more reasonably priced product include the following.

Weathershield Windows Reviews

Armaclad Windows

-- Price Range: $800 to $1200 Installed --

Fiberglass Window Prices :: Mid Range

Two manufacturers that produce a mid range priced fiberglass window include the following.

Milgard Ultra

Marvin Integrity

-- Price Range: $1200 to $1500 Installed --

Fiberglass Window Prices :: High End

Two manufacturers that produce some of the best fiberglass windows on the market include the following.

Marvin Infinity

Inline Windows

-- Price Range: $1500 to $2,000 Installed --

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