Fiberglass Windows Prices & Costs

Fiberglass windows prices range anywhere from $850 to $1800 for the window and installation. Pricing will depend on the manufacturer, type of window and frame, glass package and features, size of window and the level of difficulty involved with the installation. We have a range of general costs for the windows themselves, window installation costs and the total price you can expect for entry, mid range and premium products.

“Fiberglass windows are durable, attractive and have very solid performance numbers. Most homeowners should expect to pay somewhere between $850 an $1800 for a double hung window with straight forward installation.”

Entry Level Fiberglass Windows Prices

Homeowners should expect entry level fiberglass windows prices to start at $850 and run to roughly $1200. This grade of product might be purchased at big box stores like Lowes or Home Depot or through lower end manufacturers. Most lower end products offer a thinner extrusion, double pane glass with a lower level Low-e glass package. They might be a fixed frame or a simple window type such as a single hung or horizontal slider.

Examples at this price point include the: Milgard Ultra Fiberglass Window

Mid Range Fiberglass Window Prices

Homeowners can expect mid range fiberglass windows prices to start at $1200 and run to roughly $1500. Mid range costs will often include a glass package with better energy efficiency features and might include some of the following; lower R-value and U-factor, low-e glass and argon or krypton fills. The window might be a casement, awning or double hung.

Examples at this price point include the: Pella Impervia Fiberglass Window

Premium Fiberglass Windows Prices

Homeowners can expect premium fiberglass windows prices to start at $1500 and run to roughly $1800. High end fiberglass windows are often sold by top window manufacturers. Consumers can expect the low-e glass package to be high end as well, excellent U-factor and SHGC numbers, and nice upgrades like meeting rail reinforcements, non metallic spacers, metal hardware, etc. Expect top-of-the-line styles like casement windows – sold by companies like Serious or Marvin.

Examples at this price point include the: Marvin Integrity Fiberglass Window

Fiberglass Windows Prices

Window Installation Costs

Installation costs will range from $150 to $450 per opening or window. Pocket or insert installation that can fit into the existing frame will run $100 to $150 per window. If, however, the install is more complicated and involves full frame installation, the price tag can run $250 to $450 per opening.

Consumer Fiberglass Windows Prices

Below are examples of what past customers paid for their fiberglass windows.

Milgard Ultra Series
Arch Top Double Hungs, Triple Woodclad
Dimensions: 60″H x 48″W
Pricing: $1,290 each
Includes installation.
Location: N/A
Pricing from 2010.

Milgard Ultra Series
12 Double Hungs
Dimensions: 24″W x 36″H
Cost: $705 each
Includes installation.
Location: N/A
Pricing from 2010.

Marvin Infinity Series
Dimensions: Medium Sized
Pricing: $650 each
Included windows, tax and installation.
Location: New England
Purchased in 2009.

Gilkey Fiberglass Series
8 Casements
Dimensions: 24″W x 48″H
Cost: $545 each (did not include grids)
Installation by Gilkey.
Purchased in 2008.

Marvin Infinity Series
12 Casements
Dimensions: 24″W x 48″H
Costs: $545 each
Installation by company installers.
Location: N/A
Purchased in 2008.

Marvin Infinity Series
18 Double Hungs
Dimensions: N/A
Pricing: $750 each
Included product, tax and installation.
Location: N/A
Purchased in 2007.

Replacement Windows Connect