Refinishing/Painting of Aluminum Anodized & Factory-Painted Metal Window Frames on Buildings

Not only are faded or corroded metal and aluminum window frames unsightly, but they can become worthless very quickly if left unattended. Most window frames are made of aluminum and will corrode very quickly when unprotected by anodizing or paint. Window frame replacement is costly and intrusive to the occupants of the building.

Induspray is a leader in the field-application of finishes that are equivalent replacements to original long lasting factory paint finishes. With our premium finishes, the coatings are custom made for us and utilize the highest quality inorganic pigments and resins to provide long lasting, fade resistant performance.

An old, faded building can look like new! At a small fraction of the cost of replacement, this type of window frame restoration is often selected by owners as an effective, cost efficient alternative.

Technical Considerations

Horizontal window mullions tend to get more sun exposure and accumulate more dirt. Thus, abrasion and chemical resistance, high quality pigments, and the coating’s ability to withstand water-immersed conditions are all important. In the wintertime, if the frames are left uncleaned and wet from ice and snow, surface dirt occurring under the ice and snow can act like sandpaper, removing the protective factory paint finish and leaving the mullion with only a very thin film of paint for corrosion control. In addition, water accumulation on the window frame when left over 24 hours is considered an immersed condition, thus causing premature wear and failure if the coating is not designed with this in mind.

When planning to use dark colours for exterior use, make sure you use the highest quality paint you can afford. Higher quality paints will have the ability to withstand large temperature fluctuations better. This is an important issue since metal surfaces and especially window frames experience a lot of expansion and contraction due to seasonal and daily temperature fluctuations, particularly in the spring and fall seasons. Sun fading on dark-coloured painted surfaces will also be more visible, so the pigmentation quality of the paint must also be considered.

Medium and dark-coloured paints used on exteriors are worked extra hard. The average surface temperature of a medium or dark-coloured window frame exposed to the sun can be over 25 percent higher (50 degrees F) than for a light-coloured frame. This extra temperature gain is taxing on the paint coating, and will shorten its life when compared to a white or light-coloured surface. On metal surfaces there is a tremendous amount of expansion and contraction of the metal from the high temperature part of the day to low. Not only does the higher temperature wear out the paint finish in itself, but this daily temperature fluctuation forces the paint to elongate during the day and contract at night, thus causing extra wear.

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Photo Gallery

Click to view some of our metal refinishing projects for metal/steel/aluminum window frames.

Locations We Service

We are Toronto industrial painters serving Toronto, the GTA, Southern Ontario, Western Ontario, Eastern Ontario and parts of Northern Ontario.

Our territory includes:

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Our Customers

We’ve been in business since 1975, serving over 4,875 satisfied clients while completing thousands of industrial and commercial painting projects. These are just some of our customers:

General Electric
Emerson Electric
Maple Leaf
Magna Automotive
Petro Canada
Celestica
Redpath Sugar
Johnson Controls
AECON
Cargill
ABB
Canada Wire
STELCO
Molson Coors
Raymond

What Our Clients Say

Induspray painted all the aluminum siding on the exterior of our warehouse, plus parts of the interior. The exterior totalled over 20,000 square feet. We’re very pleased with the results and how well the project was handled. Thanks, we could not really ask for more and are completely satisfied.

Induspray produced solid work at a low price with attention to detail.

A perfect painting job and quick work by talented painters. Found your company on the internet and could not be happier. Thank you again Andrew.

The crew from Induspray did a great job for us. We had our entire warehouse ceiling painted (at over 85,000 sqft), and they were in and out in less than the originally estimated time. I would definitely recommend them.

Your Project

Have questions about painting and refinishing your aluminum or metal/steel window frames? We can quickly assess your needs and make cost-effective recommendations. Contact us today — we’re here to help.

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FAQs on Metal & Aluminum Window Frame Refinishing

Refinishing is usually far cheaper and much less disruptive than replacing your frames. You keep your existing structure, avoid messy construction work, and still end up with a fresh, durable finish that lasts for years. Replacement is only necessary when the frames are physically damaged or structurally unsound otherwise, refinishing offers the same visual impact for a fraction of the cost.

We can refinish most types of metal and aluminum window frames, including anodized aluminum and factory-painted frames. Whether they’re dull, faded, or starting to corrode, our refinishing process can restore their color, gloss, and protection.

Metal window frames take a lot of punishment from the elements, constant sun exposure, rain, and temperature swings. Horizontal mullions, in particular, collect dirt and water, which accelerates wear. Dark-colored frames also absorb more heat, leading to expansion and contraction that can stress the coating. That’s why professional refinishing, with the right surface prep and coatings, is key to long-term success.

If your frames are chalky, discolored, flaking, or showing rust or pitting, refinishing is a smart solution. When the metal still has good structural integrity but looks worn, refinishing can bring it back to life without the high cost of replacement.

A professional refinishing job typically lasts 8 – 25 years or more, depending on the quality of materials, preparation, and exposure conditions. Frames in harsh environments such as coastal areas or places with heavy sun may need maintenance sooner, but with proper care, your finish will last for years.

Yes! Even faded or chalky anodized aluminum frames can be refinished with the right preparation and coating system. We use specialized materials that bond securely to anodized surfaces, restoring their color and protecting against further weathering.

Refinishing mainly improves appearance and surface protection, but it can help indirectly. During refinishing, small gaps or cracks around frames can be sealed, which may reduce air leaks and drafts. However, if you’re facing major insulation issues, a window replacement might be needed.

For most commercial and industrial buildings, the timeline can range from a few days to a few weeks depending on building size, number of windows, and access. Smaller projects are often completed quickly, while larger or high-rise buildings take longer due to scaffolding and safety requirements.

The cost of metal and aluminum window frame refinishing depends on several factors, including the number and size of frames, the surface condition and amount of preparation work required, the building’s height and accessibility, and the chosen color or coating system. Our team provides transparent, customized estimates after thoroughly assessing your project,  with no hidden fees or surprises.

Getting a quote is easy, just reach out through our contact form or give us a call. We’ll review your building details, assess the condition of your frames, and provide a free, no-obligation estimate with practical recommendations.

We provide metal and aluminum window frame refinishing throughout Toronto, the GTA, Southern Ontario, and beyond including Western, Eastern, and parts of Northern Ontario.