Why Homeowners Are Choosing Fiberglass Windows Over Vinyl

Fiberglass and vinyl windows are two of the best materials you can use for your home project. But why are homeowners choosing fiberglass windows over the seemingly more cost-effective vinyl windows? In this guide, we go over the various ways fiberglass is a better long-term investment.

Which is Better, Fiberglass or Vinyl Windows?

At first glance, vinyl windows may seem attractive because of their lower upfront cost. When comparing the price of vinyl vs. fiberglass windows, vinyl usually wins on initial affordability. However, there are various factors to consider when it comes to whether fiberglass or vinyl is the better option for your windows, including:

• Budget for windows and installation
• Environmental factors
• Local availability
• Design preferences
• Long-term goals

In general, fiberglass is better across the board in factors like durability, longevity, and energy efficiency. This is why homeowners tend to prefer fiberglass over vinyl, even though vinyl is cheaper and more widely available.

The Difference Between Fiberglass and Vinyl Windows

Fiberglass windows are made from glass fibers mixed with resin, and vinyl is made from a plastic called polyvinyl chloride (PVC). Vinyl is often combined with various additives to improve strength, energy efficiency, and lifespan, so it varies widely in quality.

• Strength. Fiberglass is about eight times stronger than vinyl due to the strong glass fibers built into it. Vinyl is more flexible, but it can lose its shape under pressure or exposure to extreme temperatures.
• Stability. Fiberglass expands and contracts at almost the same rate as glass, so the seal between frame and pane stays intact. Poorly treated vinyl expands at a much higher rate, which can weaken seals over time. Broken seals often lead to drafts, fogging between panes, and reduced energy efficiency.
• Durability and Lifespan. Fiberglass can last 30 to 50+ years with minimal maintenance. Vinyl windows typically last between 10 and 30 years, depending on their quality and environmental factors.

While fiberglass has a higher up-front cost, it tends to last longer and have fewer issues in the long term. This makes it very appealing to homeowners during new construction and window replacements.

Fiberglass vs Vinyl Windows in Extreme Temperatures

Fiberglass windows outperform vinyl in areas with extreme temperatures because of how the material responds to temperature changes. Fiberglass does not expand and contract as much with the temperatures. This protects the window from issues like:

• Heat loss in winter
• Heat gains in summer
• Frames warping and distorting
• Seals breaking from stress and friction
• Higher energy costs from gaps and drafts

Vinyl can soften in high heat, particularly on sun-facing walls. They can also become brittle and discolor due to high UV or extreme cold temperatures. This can significantly reduce their effectiveness against the issues listed above.

Fiberglass Improves Curb Appeal and Home Value

If you are doing new construction or plan to sell your home, fiberglass is generally a better choice to increase your home's value. Fiberglass is more resistant to wear and discoloration, and it can even mimic the look of other materials like wood grains. This can help you match the windows seamlessly to the rest of your home's architecture.

It also makes the home more appealing to buyers. A study by This Old House indicated that homeowners can expect to recoup 60-70% of the window installation price in their home’s value during the sale because homebuyers prefer the low maintenance and higher energy efficiency of fiberglass. This can help you close the sale faster and for a higher dollar value.

Fiberglass vs. Vinyl Window Price

Fiberglass and vinyl window prices vary widely due to availability, insulation, materials, design, and other factors. However, vinyl tends to have a lower up-front cost, while fiberglass has a higher long-term return on investment.

• Most fiberglass windows range in price from $680 to $950 per window, excluding any add-ons and window installation services. Assuming the window lasts 50 years, a high-end window costs $19/year of its lifespan (calculated as $950 over 50 years).
• Most vinyl windows range between $391 and $834 before add-ons and installation. Assuming a high-end window lasts 30 years, it would be an investment of $27 per year of its lifespan (calculated as $834 spread out over 30 years).

This does not include other returns on investments, such as energy bill savings and maintenance cost savings. Fiberglass may seem more expensive upfront, but it is the more cost-effective investment for homeowners.

Homeowners Benefit From Choosing Fiberglass Windows Over Vinyl

The difference between fiberglass and vinyl windows goes far beyond price. Fiberglass offers superior strength, stability, and energy performance. It maintains its appearance with little maintenance, withstands harsh climates, and delivers lasting comfort and efficiency. And while it tends to cost more than vinyl up front, it gives the highest return on a homeowner's investment over its lifespan.

Are you debating the best window materials for your home project? Give us a call today. Whether you're looking for expert advice, a quote, or just want to chat about your construction needs, we're just a message away.