Painting aluminum siding is one of the most cost-effective ways to refresh your Minnesota home''s appearance and extend the life of your existing siding. Aluminum siding was widely installed from the 1950s through the 1980s, and many Minnesota homes still have it in place. With proper preparation and quality paint, aluminum siding can look fantastic for another decade or more. At Weatherguard Construction, our family-owned team has been painting aluminum siding across Stillwater, Woodbury, and Minneapolis for over 25 years, delivering professional results that stand up to our brutal climate.
Why Paint Aluminum Siding?
Restore Faded Color
Over decades, Minnesota''s UV exposure and weather cause aluminum siding to fade, chalk, and lose its original vibrancy. Chalking appears as a white, powdery residue that rubs off when you touch the surface. Painting restores rich, vibrant color and gives your home a like-new appearance at a fraction of the cost of replacement.
Update Outdated Colors
Many aluminum siding homes were installed in colors popular decades ago, such as harvest gold, avocado green, or robin''s egg blue, that feel dated by today''s standards. Painting allows you to choose any modern color to update your home''s look without the expense of new siding.
Add Protective Value
Paint adds an additional layer of protection against moisture, oxidation, and UV damage. Quality exterior paint on aluminum siding helps prevent corrosion, particularly at seams, edges, and areas where the original finish has worn away.
Preparing Aluminum Siding for Paint
Preparation is the most critical step in painting aluminum siding. At Weatherguard Construction, our preparation process ensures long-lasting, professional results.
Remove Chalking and Oxidation
Aluminum siding develops a chalky oxidation layer that must be completely removed before painting. We use a combination of power washing with appropriate detergent and hand scrubbing on heavily oxidized areas to remove all chalk and contaminants. Painting over chalk guarantees adhesion failure.
Clean Thoroughly
After removing chalk, the entire surface is washed to remove dirt, mildew, cobwebs, and other contaminants. We allow the siding to dry completely, typically 24 to 48 hours in Minnesota''s variable humidity, before proceeding.
Address Damage and Dents
We inspect the siding for dents, loose panels, missing pieces, and damaged areas. Minor dents can be filled with exterior-grade filler and sanded smooth. Loose panels are resecured, and damaged sections are repaired or replaced before painting. These repairs are much easier and cheaper than replacing the entire siding system.
Prime Bare Metal
Any areas where the original finish has worn away to bare aluminum must be primed with a metal bonding primer. We use primers specifically formulated for non-ferrous metals like aluminum, ensuring the topcoat adheres permanently.
Best Paint for Aluminum Siding
For aluminum siding in Minnesota, we recommend 100 percent acrylic latex exterior paint in a satin or low-luster sheen. Acrylic latex paint provides excellent adhesion to properly prepared aluminum, superior flexibility in our extreme temperature range, and outstanding resistance to fading and chalking. Sherwin-Williams Duration, Benjamin Moore Regal Select, and PPG Timeless are all excellent choices.
Oil-based paints and alkyd enamels should be avoided on aluminum siding because they become brittle over time and tend to crack and peel in Minnesota''s freeze-thaw conditions. The flexibility of quality acrylic latex paint is essential for long-term performance on metal substrates.
Application Techniques for Aluminum Siding
Spray Application
Airless spray application is our preferred method for aluminum siding because it delivers a smooth, uniform finish without brush marks or roller texture. Aluminum siding''s factory-smooth surface shows any application imperfections clearly, making spray application the professional standard. Our crews carefully mask all windows, doors, trim, and adjacent surfaces before spraying.
Back-Brushing
On certain areas, we follow spray application with immediate back-brushing to work the paint into the profile of the siding and ensure complete coverage at edges and overlaps. This combination technique produces the best adhesion and most complete coverage.
Two Coats Minimum
We always apply two coats of finish paint for maximum durability and coverage on aluminum siding. The first coat seals the surface and provides uniform base coverage, while the second coat builds film thickness for weather protection and ensures consistent color depth across the entire surface.
Color Considerations for Aluminum Siding
When choosing a color for aluminum siding, keep in mind that darker colors absorb more heat and can cause aluminum panels to expand more than lighter colors. While this is rarely a structural concern, it can cause audible popping sounds as panels expand and contract with temperature changes. Medium to light tones minimize this effect while still allowing for dramatic color updates. Popular choices in our market include warm grays, creamy whites, soft blues, and sage greens.
How Long Does Paint Last on Aluminum Siding?
Quality exterior paint on properly prepared aluminum siding lasts 8 to 12 years in Minnesota. This excellent longevity makes painting aluminum siding one of the best home improvement values available. Compare this to the $15,000 to $30,000 cost of complete siding replacement and the value becomes clear.
Schedule your free painting estimate with Weatherguard Construction or call (651) 439-4320. We serve homeowners across Minnesota, Schaumburg, IL, and Centennial, CO.
Frequently Asked Questions
Can aluminum siding be painted any color?
Yes, aluminum siding can be painted virtually any exterior color. However, we recommend medium to light tones to minimize thermal expansion effects. If you choose a dark color, use a premium paint with heat-reflective technology to reduce surface temperature.
How do I know if my aluminum siding needs painting?
Run your hand across the siding surface. If a chalky white residue comes off on your hand, your siding is oxidizing and ready for paint. Other signs include visible fading, color inconsistency between sun-exposed and shaded walls, and areas of bare metal.
Is it better to paint or replace aluminum siding?
If your aluminum siding is structurally sound with no significant dents, corrosion, or missing panels, painting is far more cost-effective. Painting costs one-fifth to one-tenth of siding replacement and can give your home a completely refreshed appearance. If the siding has extensive damage, replacement may be the better long-term investment.
Do I need to prime aluminum siding before painting?
If the existing factory finish is intact and properly cleaned of all chalk and oxidation, a bonding primer is recommended but may not be strictly necessary with certain premium paints that include self-priming technology. However, at Weatherguard Construction, we always prime bare metal areas and recommend full priming for the best long-term results.
