Toronto’s Siding Problem: Why More Buildings Are Repainting Aluminum Instead of Replacing It

As building owners face increasing maintenance costs and visual wear on aging exteriors, many are turning to painting aluminum siding rather than costly replacement. Across Toronto, the demand for experienced aluminum siding painting contractors has skyrocketed—especially for commercial and multi-unit buildings.

This shift reflects a broader understanding: siding doesn’t always need to be replaced to look new. With the proper surface prep and coatings, it can be restored and protected for years.

Why Aluminum Siding Fades, Chalks, or Corrodes

Toronto’s climate is harsh on exterior surfaces. UV exposure, fluctuating temperatures, moisture, and pollution all contribute to siding degradation. Aluminum siding, though durable, is prone to:

• Fading due to prolonged sun exposure
• Chalking, where oxidized paint leaves a white residue
• Pitting or corrosion, especially near water runoff or HVAC discharge areas

These issues make buildings appear older than they are—affecting brand perception and curb appeal.

The Repaint vs. Replace Decision: What Building Owners Are Choosing

Replacing aluminum siding is disruptive and expensive. It involves removal, disposal, and complete reinstallation—costs that quickly add up for commercial properties or large condominiums.

In contrast, siding painting offers several advantages:

• Less downtime for tenants or operations
• Far lower cost than siding replacement
• Flexible colour options for rebranding
• A clean, refreshed look in just days

This makes repainting the preferred choice for building owners seeking to enhance aesthetics without undertaking a complete infrastructure overhaul.

The Process of Painting Aluminum Siding Professionally

Professionals follow a multi-step process to ensure lasting results:

1. Surface Cleaning – Pressure washing removes chalk, mildew, and grime
2. Sanding or scuffing – This improves paint adhesion on smooth metal
3. Spot priming – Applied to any exposed or corroded areas
4. Coating – Usually two coats of exterior acrylic or urethane enamel, sprayed for a smooth finish

Proper masking protects windows, trims, and nearby surfaces, allowing business operations or residential activity to continue without significant disruption.

Surface Prep Myths: What DIYers Get Wrong

Many property owners assume that painting aluminum siding is similar to painting a wall; however, poor surface preparation is the number one reason repainted siding fails.

Common DIY mistakes include:

• Painting over chalky residue
• Skipping primer on bare metal
• Applying thick, uneven coats
• Using low-grade paints not rated for aluminum

Professional aluminum siding painting ensures surface prep, coating compatibility, and technique all meet commercial-grade standards.

How Siding Colour Can Refresh Branding or Leasing Appeal

Colour isn’t just cosmetic—it communicates identity. Commercial buildings that refresh their siding with modern colours tend to attract more foot traffic, tenants, and buyers.

• Neutral tones convey professionalism
• Bold hues draw attention to retail locations
• Dark shades modernize aging architecture

By updating colour schemes, businesses often enhance brand consistency while increasing the perceived value of their properties.

Best Paint/Coating Options for Siding Longevity

Not all paints are created equal. For aluminum siding, top-performing options include:

• 100% Acrylic Latex – UV-resistant and flexible
• Urethane Enamels – High durability and gloss retention
• Elastomeric Coatings – Best for sealing and bridging minor surface flaws

When applied correctly, these coatings resist fading, chalking, and cracking—lasting up to 10–15 years.

Boosting Curb Appeal with Siding Repaint Projects

Whether it’s a retail plaza, office complex, or mid-rise apartment, repainting aluminum siding is a smart, cost-effective upgrade. More Toronto building owners are avoiding complete siding replacement by partnering with professional aluminum siding painting contractors who know how to deliver long-lasting, low-disruption results.

Contact Industry Painting Ltd. to plan your next siding repaint. Their team combines precision prep, high-performance coatings, and experience across GTA commercial projects.