How Much Does It Cost To Install A Fibergalss Window?


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Fiberglass Window Costs

Indoor Cost Guides      Window Installations      Fiberglass Window Costs

Fiberglass is chosen as a material for windows due to its ability to resist expanding and contracting whenever the humidity or temperatures change. They are ideal for all locations and all seasons. They are viewed as superior, even though they are at a reasonable price, and their ability to help a home become energy efficient makes them a very popular choice.

They are available in every style, including traditional options like single or double-hung, picture and fixed, casement, egress, bay and more. The pricing varies based on the type or style, the size, and the level of difficulty it will take to install it properly.

Fiberglass window installation: the cheapest option is a single pane awning window and the expensive option of the range is an argon-filled casement window.

Item Cost Quantity Line Cost
Fiberglass window: the cost of any fiberglass window varies based on the style. $90-$800 per window 1 $90-$800
Glass: the type of glass in the fiberglass window has an impact on the price with single, double, low-E, triple, laminated and other options available. $47-$800 per window 1 $47-$800
Insulation: this requires the use of insulation film and caulking. $45 per window 1 $45
Material Cost $137-$1,600 per window 1 $182-$1,645
Labor Cost (installation) $38 per hour 3 $114
Total Cost $296-$1,759 per window 1 $296-$1,759


Other considerations and costs

  • Exterior and interior framing and casing add to the good looks and long life of any window. Each step (inside and out) will require labor and materials, and averages at $35 or more per window.
  • There is very little maintenance required of the fiberglass windows and they are very energy efficient, making their per window installation prices reasonable and likely to generate a good ROI. They last around 50 years.
  • Having windows installed in late autumn and early winter is a good way to get the best price as that is the contractors’ down season.

DIY considerations

  • A fiberglass window installation is not a DIY project. It takes a lot of know-how to do it properly, and since a window might compromise certain elements of the structure if installed badly, it is best to hire experts to do the work – after getting a few quotes or estimates, of course.


  • Craftsman Estimator Costbook, complete series year 2015.
  • Latest prices found on Home Depot and other vendor Web sites.
  • Literature review of DIY Web sites.
How much does it cost to install a fibergalss window in your city?
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Cost by city

  • New York, NY$1,650.55
  • Bronx, NY$1,356.31
  • Brooklyn, NY$1,130.42
  • Philadelphia, PA$1,410.22
  • Washington, DC$1,223.72
  • Atlanta, GA$1,107.16
  • Miami, FL$1,006.96
  • Fort Lauderdale, FL$1,054.80
  • Minneapolis, MN$1,237.40
  • Chicago, IL$1,441.71
  • Houston, TX$1,487.04
  • San Antonio, TX$998.21
  • Austin, TX$1,130.28
  • Denver, CO$954.98
  • Phoenix, AZ$1,007.55
  • Las Vegas, NV$1,105.85
  • Los Angeles, CA$1,246.03
  • San Diego, CA$1,130.71
  • San Jose, CA$1,365.77
  • Seattle, WA$999.90

Local costs have been calculated by accounting for labor and material cost differences across different cities. To get accurate cost estimates, indicate yours: