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Should I choose vinyl or fiberglass replacement windows?

September 02, 2022

Fiberglass Windows with garden view

If you need to replace your windows, you might be overwhelmed by the number of options there are for materials and styles. Between wood, fiberglass, vinyl, and more, it can be difficult to determine which is the best for you. One of the biggest choices that homeowners face, though, is vinyl-framed windows versus fiberglass-framed windows—they’re similar in function and durability, but what are the other differences, and which one fits your needs best? Consider some of these factors.


While both options are highly durable—vinyl lasts for about 30 years, and fiberglass 50—vinyl is more prone to expanding during temperature changes. If you live in an area with extreme weather, this may mean you’ll have to replace your vinyl windows sooner. Fiberglass is more resistant to the elements and lasts longer. However, both are more durable and easier to care for than wood.


Fiberglass is fabricated from glass that’s heated and formed into fine fibers, while vinyl is made from PVC, a type of plastic. Both options look great and come in various styles and colors. However, fiberglass has more options for textures, including some that mimic wood grain, and it is also paintable. Moreover, fiberglass is thinner than vinyl, which means it is a better option if you want to expose more of the window glass and let as much natural light in as possible.

Energy Efficiency and Cost

Both vinyl and fiberglass offer excellent thermal performance. The decision here will depend on your priorities. Vinyl is an extremely cost-effective option that can boost your home’s curb appeal and improve energy efficiency—if you need window replacements immediately and want to keep costs down while maximizing thermal performance, vinyl is probably your best bet. Fiberglass is generally more expensive than vinyl, but it might be a better investment if you prioritize appearance or desire more natural light in your home.

Reach Out to Us

If you want to learn more about the pros and cons of vinyl versus fiberglass windows, contact Five Star Improvements. Our experts can discuss which option would be best for you and also schedule a consultation to examine your existing windows. We offer numerous high-quality replacement windows and would be delighted to help you with your home improvement project. Reach out today!

Extending Unparalleled Service & The Ultimate Home Improvement Experience

Remodeling your home can be a long, stressful, and exhausting process. But, it doesn’t have to be. Simply partner with Five Star Improvements. We put our customers above all else, making sure that they are comfortable and content throughout the home improvement process. We strive for 100% customer satisfaction, and we always go the extra mile to ensure just that. And, if anything goes awry at any point during the project, then we will not stop until we rectify the problem.

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145 Norris Dr.
Rochester, NY 14610
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Marcellus, NY 13108
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