If you own an older home in the Denver metro area, you may be looking at aluminum siding Denver homeowners have relied on for decades and wondering whether it’s worth keeping, repairing, or replacing. Aluminum siding had its heyday in the mid-twentieth century, and plenty of homes in neighborhoods like Wash Park, Cherry Creek, and Highlands Ranch still wear it today. But with modern materials like fiber cement and engineered wood now available, does aluminum still pull its weight on Colorado exteriors?

A Brief History of Aluminum Siding

Aluminum siding emerged in the 1940s as a lightweight, low-maintenance alternative to wood clapboard. It dominated the residential market through the 1970s before vinyl and fiber cement began capturing market share. The National Park Service recognizes aluminum siding as a historically significant exterior material, particularly for mid-century homes, and offers preservation guidance for aluminum and vinyl siding on older and historic structures.

Here in Denver, we still see aluminum siding on homes built during the post-war boom. Some of it has held up remarkably well; other installations show their age through dents, chalking, and faded paint from decades of Front Range sun exposure.

Advantages of Aluminum Siding

Aluminum siding does offer several genuine benefits that explain its long popularity, especially in a high-altitude climate like Denver’s:

  • Fire resistance: Aluminum is non-combustible and carries a Class A fire rating, which matters in Colorado’s wildland-urban interface zones.
  • Moisture proof: Unlike wood, aluminum won’t rot, warp, or attract insects. It shrugs off Denver’s freeze-thaw cycles without absorbing moisture.
  • Recyclable: Aluminum siding is one of the few exterior materials that’s fully recyclable at end of life.
  • Lightweight: Easy to handle and install, which kept labor costs down historically.

For homeowners focused on siding in Denver, these advantages still hold true. But they come with significant trade-offs that have pushed aluminum out of favor for new installations.

Drawbacks in Colorado’s Climate

The biggest problem with aluminum siding Denver homes face is denting from hail. The Denver metro area experiences some of the most frequent severe hail events in the United States, with 2+ inch hailstones reported regularly during spring and summer storms. Aluminum siding dents on impact, and there’s no way to pop those dents back out without replacing the entire panel.

Other Colorado-specific drawbacks include:

  • UV degradation: At 5,280 feet of elevation, Denver’s UV index is significantly higher than at sea level. Painted aluminum siding chalks and fades faster here than in other climates.
  • Thermal expansion: Aluminum expands and contracts with temperature swings, which can loosen fasteners and create gaps during our dramatic freeze-thaw cycles.
  • Noise: Aluminum siding is noisy in wind and rain, a characteristic that doesn’t pair well with Colorado’s afternoon thunderstorms.

How Aluminum Compares to Modern Siding Materials

When we consult with Denver homeowners about siding replacement, the conversation usually comes down to three modern alternatives that outperform aluminum in our climate:

Fiber Cement (James Hardie)

James Hardie fiber cement siding carries a 30-year non-prorated warranty and a Class A fire rating. It resists hail damage far better than aluminum, holds paint longer with ColorPlus Technology (a 15-year finish warranty), and won’t dent. For Front Range homes, it’s our most recommended material.

Engineered Wood (LP SmartSide)

aluminum siding infographic for Denver, CO

LP SmartSide uses an engineered wood substrate treated with SmartGuard process for moisture and termite resistance. It carries a 50-year limited warranty and has been tested to withstand 1.5-inch hail impacts (Class 4 rating under UL 2218). It’s lighter than fiber cement and installs faster.

Vinyl Siding

Modern insulated vinyl siding offers R-values from R-2 to R-4, improving energy efficiency. It won’t dent like aluminum, though it can crack under extreme impact. Vinyl remains the most budget-friendly option for whole-home siding replacement.

Each of these materials addresses the specific weaknesses of aluminum siding in Colorado’s climate. You can explore our full range of siding options to see which fits your home and budget.

Should You Keep, Paint, or Replace Aluminum Siding?

If your Denver home currently has aluminum siding, you have three options:

Keep and maintain it if the siding is in good condition with minimal denting. Repainting with a high-quality acrylic latex paint can extend its life by 8-10 years. This makes sense for homes in sheltered areas like Stapleton or Central Park where hail exposure is somewhat reduced by surrounding structures.

Repair individual panels if only a few sections are damaged. Matching old aluminum siding colors can be challenging, but partial replacement is cost-effective for isolated hail damage.

Replace entirely if the siding has extensive denting, chalking, or faded paint. Given Colorado’s hail frequency, investing in impact-resistant materials like James Hardie or LP SmartSide typically pays for itself within one or two major storms. According to the Remodeling Cost vs. Value report, siding replacement recoups roughly 72-78% of its cost at resale, making it one of the better exterior investments.

Talk to Denver’s Siding Experts

Aluminum siding served Denver homes well for decades, but modern materials simply perform better in our hail-prone, high-UV climate. Whether you need to replace dented aluminum panels or want a full siding upgrade, our team at Siding Colorado can help you choose the right material for your home, budget, and neighborhood.

We offer free estimates and consultations across the Denver metro area, from Aurora to Lakewood to Parker. Call us today to schedule your inspection and find out whether it’s time to say goodbye to your old aluminum siding.