October 24, 2025

Window Materials Comparison: Wood, Fiberglass, Vinyl, and Aluminum-Clad Windows for Colorado Homes

John Kroeger

When you're investing in new windows for your Colorado home, the material you choose will impact everything from your daily comfort to your home's long-term value. With so many options on the market—wood, fiberglass, vinyl, and aluminum-clad—how do you know which material is right for your specific situation?


The truth is, not all window materials are created equal, especially when you factor in Colorado's unique climate challenges. From hailstorms along the Front Range to intense UV exposure at mile-high altitudes, your windows need to withstand conditions that would challenge materials in other parts of the country.


Let's break down the four main window frame materials available today, so you can make an informed decision for your home.



Wood Windows: Timeless Beauty with Modern Performance

The Appeal: Traditional wood windows offer unmatched natural beauty and authentic character. Real wood provides excellent insulation properties and can be customized with virtually any stain or paint color. For homeowners who value craftsmanship and classic aesthetics, wood windows create a warm, inviting atmosphere that synthetic materials simply cannot replicate.


The Reality: Modern wood windows have evolved far beyond the high-maintenance reputation of decades past. Today's engineered wood frames feature advanced moisture barriers and protective finishes that dramatically reduce maintenance requirements while preserving the natural beauty homeowners love.



Best For: Historic homes, luxury properties, and homeowners who prioritize authentic materials and are willing to invest in proper maintenance.

Fiberglass Windows: The Marketing Promise vs. Reality

The Appeal: Fiberglass windows are heavily marketed as "low-maintenance" and "durable." Materials like Ultrex® fiberglass (used in Infinity from Marvin) promise dimensional stability and resistance to expansion and contraction.



The Reality: While fiberglass offers decent performance, it comes with significant limitations. Most fiberglass windows feature simulated wood interiors (like EverWood®) that look like wood from a distance but cannot be truly refinished or repaired like real wood. Scratches and damage often result in visible repairs that don't blend seamlessly with the surrounding material.

Additionally, many fiberglass windows rely on acrylic cap finishes that can be more vulnerable to Colorado's intense UV exposure and hail damage compared to more robust exterior materials.


Best For: Budget-conscious homeowners seeking better performance than vinyl but who are willing to accept limitations in customization and repairability.

Vinyl Windows: The Budget Option

The Appeal: Vinyl windows offer the lowest upfront cost and require minimal maintenance. They're widely available and can provide adequate performance for basic replacement needs.


The Reality: Vinyl has inherent limitations that become more apparent in Colorado's climate. The material can become brittle in extreme cold and may expand and contract significantly with temperature swings. Color options are limited, and vinyl cannot be painted or refinished. Over time, vinyl windows may show their age more obviously than other materials.


Best For: Rental properties, tight budgets, or situations where basic weather protection is the primary concern.



Aluminum-Clad Wood: The Best of Both Worlds

The Appeal: Aluminum-clad windows combine the natural beauty and insulation properties of real wood interiors with the durability and low maintenance of aluminum exteriors. This hybrid approach addresses the traditional weaknesses of both materials while maximizing their strengths.


The Reality: Quality aluminum-clad windows (like Marvin Ultimate) feature extruded aluminum exteriors with commercial-grade finishes that resist fading, chalking, and weather damage. The interior wood can be stained, painted, or refinished just like traditional wood, providing unlimited design flexibility. When properly manufactured, these windows can offer 20+ year exterior finish warranties.


Best For: Forever homes, luxury renovations, and homeowners who want the best long-term value and performance.



Real-World Example: John's 47-Window Project

Recently, our team at Five Seasons worked with a homeowner who was replacing 47 windows in their forever home. Initially attracted to fiberglass options because of marketing claims about "low maintenance," they were surprised to learn about the limitations in customization and the shorter warranty periods typical of acrylic finishes.


After seeing samples and understanding the long-term value proposition, they chose aluminum-clad wood windows. The decision came down to three factors: the ability to truly refinish the interior wood if needed, the 20-year exterior finish warranty, and the unlimited customization options for their unique architectural style.


Two years later, they're thrilled with both the performance and the aesthetic impact on their home's value.



Colorado Climate Considerations

Living at altitude presents unique challenges for window materials:

UV Exposure: At 5,280 feet and higher, UV radiation is significantly more intense. Materials with acrylic finishes may show fading or chalking sooner than in other climates.


Hail Damage: Colorado's severe weather patterns mean your windows need to withstand impact damage. Extruded aluminum cladding typically offers superior hail resistance compared to acrylic-capped materials

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Temperature Swings: Daily temperature variations can cause materials to expand and contract. Real wood with aluminum cladding tends to handle these changes better than vinyl or lower-quality composites.



Dry Climate: Colorado's low humidity can affect certain materials over time. Properly sealed wood with aluminum protection performs consistently in these conditions.

Making the Right Choice for Your Home

Consider these questions when evaluating window materials:

Is this your forever home? If you're planning to stay long-term, investing in higher-quality materials like aluminum-clad wood makes financial sense over the 20+ year lifespan.

How important is customization? If you need specific sizes, colors, or architectural details, aluminum-clad wood offers virtually unlimited options compared to the limited selections in vinyl or fiberglass.


What's your maintenance tolerance? While all windows require some maintenance, real wood interiors can be touched up and refinished, while synthetic wood-look materials show permanent damage when scratched or dented.


What's your budget horizon? Consider the total cost of ownership, including warranty coverage, potential repairs, and impact on home value, not just the initial purchase price.



The Bottom Line

For Colorado homeowners serious about long-term value, performance, and aesthetics, aluminum-clad wood windows represent the sweet spot of durability, beauty, and practicality. While the initial investment may be higher than vinyl or basic fiberglass, the combination of 20-year warranties, unlimited customization, and superior weather resistance makes them the smart choice for forever homes.



At Five Seasons Windows & Doors, we specialize in Marvin Ultimate aluminum-clad wood windows because we believe Colorado homeowners deserve the best protection against our unique climate challenges. Our team can help you evaluate your specific needs and find the perfect windows for your home and budget.


Ready to explore your options? Contact Five Seasons Windows & Doors today for a free consultation. We'll help you understand exactly which window materials make sense for your Colorado home, your timeline, and your budget.

Get Started Today

Five Seasons Windows & Doors is Colorado’s top-rated local window company with 230+ 5-star reviews. We offer expert advice, no-pressure quotes, and flexible project options — including phased installs. Schedule your consult today.

(720) 734-7452 Get A Quote

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