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Quick answer: Painting aluminum siding costs about $1.25 to $3.50 per square foot in 2026, or roughly $3,000 to $10,000 for a whole-house repaint. The biggest cost driver unique to aluminum is de-chalking: old aluminum oxidizes into a powdery chalk that must be washed off completely before paint will stick. Prices vary by region and condition.
This guide helps homeowners price an aluminum siding repaint. Aluminum was popular for decades and ages well structurally, but its painted finish fades and chalks over time, so repainting is the standard refresh rather than replacement. To turn the ranges below into a real number for your home, run it through the painting estimate calculator or grab a free painting estimate.
How much it costs to paint aluminum siding
Like vinyl, aluminum siding cost scales mostly with wall area and house height. The added variable is how badly the surface has oxidized, since heavy chalk means more washing. Here is the breakdown by home size.
| House size | Low | Average | High | Notes |
|---|---|---|---|---|
| Small (1,000 to 1,500 sq ft) | $3,000 | $4,200 | $5,500 | Single story, light chalk |
| Average (1,500 to 2,500 sq ft) | $4,200 | $6,500 | $8,500 | Two stories, moderate de-chalking |
| Large (2,500 to 3,500 sq ft) | $6,500 | $8,500 | $10,000 | Heavy oxidation, full prep |
On a per-square-foot basis, expect about $1.25 to $3.50 per square foot of wall area. The low end is a single-story home with light chalking and one coat. The high end reflects two-story walls, heavy oxidation requiring thorough de-chalking and a bonding primer, and two finish coats. For how this stacks against other surfaces, see the cost to paint a house hub.
What drives the cost
These are the factors that move an aluminum siding quote up or down.
- Prep and condition. Oxidation is the wildcard. Lightly chalked siding needs a standard wash. Heavily oxidized aluminum needs aggressive pressure-washing and de-chalking, sometimes a chemical cleaner, which adds real labor before any paint goes on.
- Paint type. Aluminum takes a quality 100 percent acrylic latex topcoat, but it needs a bonding or self-etching primer first to grip the metal. That primer is an added material cost over a simple one-coat refresh.
- Surface height and access. Single-story aluminum is quick. Two-story walls and gables need ladders or scaffolding, which slows the crew and raises labor.
- Number of coats. Primer plus one or two finish coats is typical on chalky aluminum. A simple refresh on sound, recently painted aluminum may need only a single coat.
- Labor versus materials. Labor is the larger share, around 70 to 80 percent, because the de-chalking and priming are time-intensive.
- Regional rates. Local labor rates swing the total, so identical homes cost more in high-cost metros than in lower-cost areas.
Cost breakdown: labor versus materials
Aluminum repaints are labor-heavy, typically about 70 to 80 percent labor and 20 to 30 percent materials, because de-chalking and priming the metal eat so many hours relative to the dollar cost of paint.
In per-square-foot terms, materials (acrylic topcoat, bonding primer, cleaners, masking) run about $0.35 to $0.75 per square foot. Labor makes up the rest, roughly $0.90 to $2.75 per square foot depending on oxidation, height, and region. On an average $6,500 job, that is roughly $1,400 to $1,900 in materials and the remainder in labor. To check the materials side against gallons needed, see how much paint for a house exterior.
Why aluminum needs de-chalking and the right primer
This is what sets aluminum apart from vinyl and wood. As aluminum's painted finish ages, the binder breaks down and the surface oxidizes into a fine, powdery chalk. Run your hand down old aluminum siding and you will see white or colored powder on your palm. Paint applied over that chalk has nothing solid to bond to, so it peels within a year or two.
- Pressure-wash and de-chalk thoroughly. The chalk must come off completely. That means pressure-washing, often with a detergent or de-chalking cleaner, and scrubbing stubborn areas. Wiping a clean cloth across the dry surface should come back clean before you paint.
- Use a bonding or self-etching primer. Bare or de-chalked aluminum is slick metal. A bonding primer, sometimes a self-etching metal primer, gives the topcoat a surface it can grip. Skipping primer is the number one cause of peeling on repainted aluminum.
- Top with 100 percent acrylic latex. Quality acrylic latex flexes with the metal through temperature swings and resists fading. Unlike vinyl, aluminum does not warp from dark colors, so you have full color freedom here.
- Address dents and seams. Aluminum dents easily. Paint will not hide a dent, but you can fill minor ones and caulk open seams during prep for a cleaner finished look.
Because aluminum can take any color without the heat-warping risk that limits vinyl, it is the more flexible choice if you want a dramatic change. If you are comparing siding materials, the cost to paint vinyl siding guide covers vinyl's color limits, and cost to paint wood siding covers the most prep-heavy option.
DIY vs hiring a pro
Aluminum is DIY-able, but the de-chalking step is where homeowners underestimate the work. Skip it and the whole job fails. The height issue is the same as any siding.
| Approach | Typical cost (average home) | What you get |
|---|---|---|
| DIY, materials only | $650 to $1,500 | Primer, acrylic paint, cleaner, sprayer or rollers, washer rental |
| Pro, all-in | $4,200 to $8,500 | Wash, de-chalk, prime, two coats, labor, cleanup |
For a single-story home, a diligent DIYer who takes the de-chalking seriously can do this and save thousands. The risk is rushing the prep: aluminum punishes a poor wash with early peeling more than any other siding. For two-story homes, the ladder work plus the heavy washing pushes most homeowners toward a pro, who has the equipment to de-chalk high walls safely.
A worked cost example
Take an average two-story home with about 1,900 square feet of paintable aluminum wall area. The siding is structurally fine but moderately chalked, so it needs a full de-chalking wash, a bonding primer, and one finish coat.
At a mid-range $2.60 per square foot, that is 1,900 times $2.60, or about $4,950 for a professional job. Materials (primer, acrylic topcoat, cleaner, masking) run around $1,300, with the remaining $3,650 going to the wash, de-chalking, priming, and application labor. If the owner wanted a bold new color requiring two full finish coats, add roughly 20 to 30 percent, putting the job near $6,000 to $6,400. A DIY version would cost about $900 to $1,300 in materials plus the sweat of de-chalking and ladder work.
It is worth seeing how that same house shifts with condition, because oxidation is the variable that catches homeowners off guard. If the siding were only lightly chalked and the owner kept the existing color for single-coat coverage, the wash is quick and the job might land closer to $4,000 to $4,300. If instead the aluminum were heavily oxidized after decades without paint, the de-chalking alone could add a full day of labor, and combined with a two-coat color change the same 1,900 square foot home could reach $7,000 or more. The brick and stone of the house do not change, but the prep workload swings the price by thousands, which is why no honest quote skips inspecting the chalk before pricing the job.
How painters estimate the cost
Painters price aluminum by the square foot of wall area, then add for de-chalking, priming, height, and extra coats. They measure the walls, deduct openings, apply a per-square-foot rate, and line-item the prep. The square-foot method is laid out in how to price painting jobs per square foot.
That is the homeowner side, what you should expect to pay. If you are quoting the job as a contractor, the companion guide is how much to charge to paint a house exterior, which builds the price from production rates, prep time, and overhead. Timing matters too, since aluminum prep and paint cure best in mild dry weather, so the best time of year to paint a house exterior guide is worth a look before you book.
How to keep the cost down without cutting corners
Aluminum gives you a few honest ways to trim the bill, but the one rule is that none of them touch the de-chalking or the primer. Those are the steps that decide whether your paint lasts a decade or peels in a year.
- Tackle the de-chalking wash yourself. Renting a pressure washer and a de-chalking cleaner and doing the wash before the crew arrives saves skilled-labor hours. Just be thorough: wipe a clean rag across the dry siding, and if it comes back powdery, keep washing.
- Use full color freedom to your advantage. Because aluminum does not warp from dark colors, you can pick a shade close to the current one for single-coat coverage, or commit to a bold change knowing two coats are the cost. Either way, decide before you buy paint.
- Fix dents and seams during prep, not after. Filling minor dents and caulking open seams while the crew preps is far cheaper than a return visit. Walk the walls first so nothing becomes a surprise change order.
- Combine exterior tasks in one mobilization. If trim, gutters, or shutters also need paint, doing them in the same visit spreads the fixed setup cost across more work. A second call-out later costs you that setup fee again.
- Compare quotes on the prep, not the price. A lowball bid on aluminum almost always skips proper de-chalking or the bonding primer. Read each quote for how it handles oxidation and priming, because that is exactly where a cheap job fails early.
The non-negotiables are the wash, the de-chalking, and the bonding primer. Spend there and economize on color logistics, scheduling, and the parts of prep you can do yourself. Get those right and aluminum delivers a durable finish at the lower end of the range. For scheduling the job when the weather helps the primer and paint cure, see the best time of year to paint a house exterior.
Ready to price your own home? Use the painting estimate calculator for a quick number, or request a free painting estimate from a pro. Knowing the de-chalking is the make-or-break step keeps you from accepting a suspiciously cheap quote that skips it.
Frequently asked questions
Can aluminum siding be painted?
Yes, aluminum siding paints well and repainting is the standard way to refresh a faded finish. The key is thorough de-chalking to remove oxidation, followed by a bonding primer and a quality acrylic latex topcoat. Done right, painting aluminum costs far less than replacing it and lasts many years.
How much does it cost to paint aluminum siding per square foot?
Expect about $1.25 to $3.50 per square foot of wall area for a professional job in 2026. The low end is a single-story home with light chalking and one coat. The high end covers two-story walls, heavy oxidation requiring full de-chalking and priming, and two finish coats. Labor is the larger share of the cost.
Why is my aluminum siding chalky?
Chalking is oxidation. As the painted finish on aluminum ages, the binder breaks down and the surface turns to a fine powder that rubs off on your hand. That chalk must be washed off completely before repainting, because paint cannot bond to it. Heavy chalking is why aluminum needs more prep than vinyl.
What paint do you use on aluminum siding?
Use a 100 percent acrylic latex exterior paint over a bonding or self-etching metal primer. The primer is essential because de-chalked aluminum is slick, and skipping it is the main cause of peeling. Unlike vinyl, aluminum does not warp from dark colors, so you have full freedom in color choice.
Can you paint aluminum siding a darker color?
Yes. Unlike vinyl, aluminum does not warp from heat absorption, so you can paint it any color, including going darker than the original. This makes aluminum the more flexible siding if you want a dramatic color change. The only real constraints are thorough de-chalking and proper priming for adhesion.
Pricing the job as a contractor? See how much to charge to paint aluminum siding.
