Window Material Comparison: Fiberglass, Vinyl, Wood & Composite

Choosing the right window material isn’t just about looks—it’s about performance, comfort, and long-term value. Here’s how different window materials compare, especially in Colorado’s challenging climate.

Quick Verdict: For Colorado’s extreme conditions, fiberglass windows (like Infinity from Marvin®) deliver the best balance of durability, energy efficiency, and low maintenance. Vinyl is affordable but less durable, wood offers beauty with more upkeep, and composite varies by brand and build quality.

Compare Window Materials at a Glance

Fiberglass

Durability: ★★★★★
Cost: $$$$
Energy Efficiency: ★★★★★
Maintenance: Low
Aesthetic: Modern/Clean
Best For: Harsh climates (Colorado)

Vinyl

Durability: ★★★☆☆
Cost: $$
Energy Efficiency: ★★★★☆
Maintenance: Low
Aesthetic: Basic/Neutral
Best For: Budget-conscious projects

Wood

Durability: ★★★★☆
Cost: $$$$
Energy Efficiency: ★★★★☆
Maintenance: High
Aesthetic: Classic/Traditional
Best For: Historic or high-end homes

Composite

Durability: ★★★★☆
Cost: $$$
Energy Efficiency: ★★★★☆
Maintenance: Medium
Aesthetic: Varied
Best For: Mixed-performance buyers

Why Fiberglass Windows (Especially Infinity®) Win in Colorado

Fiberglass frames, like those used in Infinity from Marvin®, are incredibly strong and stable. They resist warping, swelling, and cracking—perfect for Colorado’s freeze-thaw cycles and hailstorms. Their sleek appearance and energy efficiency make them our top recommendation.

Explore Infinity from Marvin®

Vinyl Windows: Budget-Friendly, But Built to Fade

Vinyl windows are cost-effective and require little upkeep, but they may not last as long in Colorado’s sun and temperature swings. They’re a solid option for quick upgrades and rental properties, but not for long-term performance.

Wood Windows: Natural Beauty, High Maintenance

Wood offers timeless style and great insulation, but it demands regular upkeep. In humid or storm-prone areas, rot and warping can become issues. Great for homeowners focused on architectural accuracy or vintage aesthetics.

Composite Windows: A Middle Ground

Made from blended materials, composite windows aim to combine the best of both worlds. Quality can vary by brand, so be sure to ask about what’s inside the frame. These are often mistaken for fiberglass but lack the same performance track record.

Colorado's Climate Demands More from Your Windows

Between hail, UV exposure, and drastic seasonal changes, not every window holds up well in Colorado. That’s why fiberglass continues to outperform the alternatives in durability, insulation, and longevity.

Still Not Sure? Let’s Find the Right Window Together.

Our team at Gravina’s Window Center of Littleton® is happy to walk you through the pros and cons—no pressure, just expertise.