Fiberglass Vs. Vinyl Windows

Fiberglass Windows VS. Vinyl Windows

Two popular windows on the market today are fiberglass windows and vinyl windows. For homeowners, it can be hard telling the difference between which window is the best option. Learn more about the two, and get a stronger understanding of the differences and similarities they offer.

Vinyl Windows


  • Energy Efficient
  • Cost Effective
  • Easy & Cheap Installation
  • Maintenance Free
  • Multiple Options (Styles & Colors)
  • Best Warranties
  • Increases Home Value
  • Lasts 30 Years


  • Environmental Impact
  • Style Preference
  • Quality
  • Can warp in extreme heat
  • Expands and Contracts with temperature
  • Minimal Insulating Value in the frame

Vinyl Windows offer a less expensive, maintenance-free option for homeowners to consider when purchasing replacement windows. Flexibility in the material allows for a fast, cheap, and easy installation. Vinyl windows are low maintenance, but over time the expanding and contracting of the frame cause require caulking periodically to prevent air from coming in or out.

Fiberglass Windows


  • Thinner frames
  • More Glass
  • Maximum insulating Value in the frame for energy efficiency and noise control
  • Does not expand and contract
  • Sleeker appearance
  • Increase home value
  • Lasts on average 50 years


  • Expensive
  • Not readily available
  • Difficult to install
  • Periodic maintenance with painting
  • Fades in sunlight

Fiberglass windows may cost 10%-30% more than vinyl windows, but the energy efficiency is better and offers the best noise insulator. Fiberglass windows are low maintenance; however, over time, they made fade or peel, which will require new paint.

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