Why Premium Fiberglass Windows Are the Best Choice for Bay Area Homes

When choosing new windows for your San Francisco Bay Area home, selecting the right material is one of the most important decisions you’ll make. Many homeowners narrow their search to two popular options—wood windows and fiberglass windows. While wood has long been admired for its classic beauty, modern fiberglass windows—especially Infinity® from Marvin—deliver unmatched performance, durability, and design flexibility.

At Custom Exteriors, we help homeowners understand the differences so you can feel confident in your investment. Once you compare the two, it becomes clear why Infinity from Marvin wins the battle every time.

The Appeal and Limitations of Traditional Wood Windows

Wood windows have undeniable charm. Their rich texture and classic appearance work beautifully with historic homes, Craftsman styles, or traditional architecture. Wood naturally insulates well, which helps maintain comfortable indoor temperatures and can reduce energy usage.

However, wood windows come with significant drawbacks:

• High maintenance requirements — frequent sanding, painting, or staining
• Susceptibility to rot, swelling, and decay
• Vulnerability to insects and moisture
• Higher overall cost
• Shorter lifespan in damp or coastal climates

In the Bay Area’s mix of fog, sun, and moisture, wood windows often struggle to maintain their structural integrity and appearance long-term.

The Modern Advantage: Infinity® from Marvin Fiberglass Windows

Infinity® fiberglass windows deliver everything homeowners love about wood—elegant aesthetics, timeless profiles, and customizable design—without any of the downsides.

Infinity windows are crafted from Ultrex® fiberglass, a proprietary material engineered to perform where wood falls short.

Authentic Wood-Like Appearance

Infinity windows are designed to mimic the refined lines and rich appearance of traditional wood windows. Since fiberglass can be painted or finished to suit your home's style, you can achieve nearly any look—from contemporary minimalism to classic coastal charm.

Superior Strength & Longevity

Ultrex fiberglass is:

• 8X stronger than vinyl
• Structurally stable in extreme temperatures
• Resistant to rot, swelling, and warping
• Highly durable with a long, predictable lifespan

Where wood breaks down over time, fiberglass stands strong for decades—ideal for the Bay Area’s humidity, sun exposure, and coastal conditions.

Low Thermal Expansion for Long-Term Performance

Fiberglass expands and contracts at nearly the same rate as glass. This means:

• Fewer seal failures
• Less risk of stress cracks
• Longer-lasting energy performance
• Reduced air leaks

This stability ensures your windows maintain an airtight seal and consistent comfort in any season.

Low Maintenance & Long-Lasting Beauty

With Infinity windows, you won’t deal with peeling paint, rotting frames, or insect damage. Their durable acrylic finish resists fading and requires little upkeep—offering a stunning, long-lasting exterior without the maintenance burden of wood.

Why Fiberglass Windows Outperform Wood

In nearly every measurable category, fiberglass windows—especially Infinity from Marvin—offer greater value and performance than traditional wood windows.

Infinity fiberglass windows:

• Look like wood but don’t deteriorate
• Require minimal maintenance
• Last significantly longer
• Perform better in varying climates
• Provide exceptional energy efficiency
• Resist warping, rotting, cracking, and moisture damage

Simply put: you get the classic beauty of wood windows without any of the drawbacks. It’s easy to understand why more and more homeowners are making the switch to Infinity from Marvin.

Trust Custom Exteriors for the Best Fiberglass Windows in the Bay Area

When upgrading to Infinity® from Marvin, professional installation is essential. At Custom Exteriors, we’ve earned a stellar reputation for delivering precision installation, superior service, and long-term value for homeowners throughout the Bay Area.

If you're ready to elevate your home with the highest-performing fiberglass windows on the market, we’re here to help.

Frequently Asked Questions About Infinity® Fiberglass Windows

Can Infinity fiberglass windows be painted?

Yes. Infinity windows can be painted or finished to match your home’s style. Their fiberglass surface accepts paint beautifully with minimal prep work.

Do fiberglass windows require much maintenance?

Very little. Fiberglass naturally resists cracking, fading, moisture, and insect damage. Occasional cleaning is typically all that’s needed.

Do Infinity fiberglass windows come in different styles?

Absolutely. Infinity from Marvin offers all the popular window styles—casement, double-hung, glider, picture, bay and bow, awning, and specialty shapes. We’ll help you choose the perfect match for your home’s design.

Upgrade to Infinity® From Marvin Today

If you’re ready to invest in the strongest, most attractive, and longest-lasting fiberglass windows available, Custom Exteriors is your trusted local expert. Contact us today to schedule your free consultation and discover why Infinity from Marvin is the premier window choice for Bay Area homes.