Etobicoke Storefronts: Can You Paint Faded Aluminum Frames? Yes — With DTM Paint
Too Long; Didn't Read
- Faded bronze or black anodized aluminum storefront frames can be refinished with DTM (Direct-to-Metal) paint instead of replaced — at roughly 20–30% of the cost of new framing.
- DTM paints (Sherwin-Williams DTM Acrylic, Tremclad DTM, Benjamin Moore DTM) bond directly to aluminum without a separate primer, provided the surface is properly cleaned and scuffed.
- The finish lasts 8–15 years in the GTA climate depending on sun exposure, cleaning frequency, and whether the frame faces south (hardest on paint) or north.
- Full storefront frame replacement for a typical Etobicoke strip mall unit runs $8,000–$15,000. A DTM refinish of the same frames costs $1,500–$4,000 including labour and masking.
- The catch: painting over anodized aluminum requires thorough surface prep. Skip the cleaning and scuffing step, and the paint peels within two years.
Answer First: You can paint faded aluminum storefront frames. You do not need to replace them. A DTM (Direct-to-Metal) acrylic paint applied over properly cleaned and scuffed anodized aluminum will hold for 8–15 years in the GTA climate. For a typical Etobicoke storefront, the refinishing costs $1,500–$4,000 — about 20–30% of what full frame replacement would run. The paint does not care that the aluminum is 25 years old. It cares that you cleaned the grease off and scuffed the surface before you pulled the trigger on the sprayer.
The Etobicoke Strip Mall Problem
Drive along Dundas Street West, The Queensway, or Kipling Avenue and you will see it on every block: strip malls from the 1980s and 1990s with aluminum storefront frames that have faded from crisp dark bronze to a chalky, uneven beige. The anodized finish that looked sharp in 1992 has been ground down by 30 years of road salt spray, UV exposure, and pressure washing.
The frames still work. The glass is fine. The doors open and close. But the building looks tired, and tired-looking buildings attract lower-quality tenants and lower lease rates.
Property managers face a choice: replace all the aluminum framing (expensive, disruptive, overkill if the frames are structurally sound) or refinish what is there.
What Happened to the Original Finish
Most commercial aluminum storefront frames installed in the 1980s and 1990s used anodized finishes — an electrochemical process that converts the surface of the aluminum into a hard oxide layer. Anodizing is durable, but it is not permanent.
What causes fading:
- UV degradation — The dye in coloured anodizing (bronze, black, dark grey) breaks down under sustained UV exposure. South-facing facades fade fastest
- Salt spray — Road salt from winter plowing is mildly alkaline. Over decades, it slowly etches the anodized layer. Etobicoke's proximity to the Gardiner Expressway and heavy Lakeshore traffic means higher salt exposure than inland areas
- Cleaning chemicals — Acidic or highly alkaline cleaning products strip the anodized layer. If the building was ever pressure washed with a degreaser, it accelerated the fade
- Age — Standard anodized finishes have a 20–30 year aesthetic lifespan. Beyond that, fading is normal
The good news: fading is cosmetic. Anodized aluminum does not corrode structurally the way steel does. A faded frame is ugly, but it is still solid.
DTM Paint: What It Is and Why It Works
DTM stands for Direct-to-Metal. These are paints formulated to adhere to metal surfaces without a separate primer coat. They contain their own corrosion inhibitors and adhesion promoters.
Recommended Products for Aluminum Storefronts
| Product | Type | Finish | Recoat Time | Notes |
|---|---|---|---|---|
| Sherwin-Williams Pro Industrial DTM Acrylic | Water-based | Satin or semi-gloss | 4 hours | Low VOC, good for occupied buildings |
| Tremclad DTM Acrylic | Water-based | Satin | 4 hours | Widely available at Home Depot Canada |
| Benjamin Moore DTM | Water-based | Eggshell to semi-gloss | 4 hours | Excellent colour matching |
| Sherwin-Williams DTM Alkyd | Oil-based | Gloss | 16 hours | Harder finish, stronger adhesion, higher VOC |
For most GTA storefront jobs, water-based DTM acrylic is the right choice. It has low odour (important for occupied buildings), fast recoat time, easy cleanup, and holds up well in the Ontario climate. Oil-based DTM alkyd gives a harder, glossier finish but takes longer to cure and has higher VOC emissions.
Surface Prep: The Step That Makes or Breaks It
DTM paint is forgiving on many metals, but anodized aluminum requires proper prep. Skip this and the paint peels.
Step 1: Clean
Wash the frames with TSP (trisodium phosphate) solution or a commercial degreaser to remove road film, cooking exhaust, and oxidation residue. Rinse thoroughly. Let dry completely.
Step 2: Scuff
Sand the entire surface with 150–220 grit sandpaper or a red Scotch-Brite pad. The goal is not to remove the anodizing — just to create microscopic scratches (mechanical tooth) that give the paint something to grip.
This is the step people skip. This is the step that matters.
Step 3: Mask
Mask all glass with painter's tape and kraft paper or plastic sheeting. Mask adjacent brick, signage, and any hardware you do not want painted. Commercial masking takes longer than the actual painting on most storefront jobs.
Step 4: Apply
Two coats of DTM paint by HVLP spray gun for a smooth, even finish. Brush and roller work for small touch-ups, but spray is the only way to get a factory-quality appearance on a full storefront.
Step 5: Cure
Allow 24–48 hours before exposing the frames to rain or cleaning. Full cure takes 7–14 days for water-based DTM. Avoid pressure washing for at least 30 days.
Cost Comparison: Paint vs. Replace
| Scenario | Paint (DTM Refinish) | Replace (New Aluminum) |
|---|---|---|
| Single storefront unit (one window wall + door) | $1,500–$4,000 | $8,000–$15,000 |
| Strip mall (6 units) | $8,000–$20,000 | $50,000–$90,000 |
| Multi-storey commercial (per floor) | $3,000–$8,000 | $15,000–$35,000 |
| Downtime | 1–2 days per unit | 1–2 weeks per unit |
| Finish lifespan | 8–15 years | 20–30 years |
Painting is not a permanent solution — it is a lifecycle extension. If the frames need to last another 10 years while you plan a larger renovation, DTM refinishing buys that time at a fraction of the disruption and cost.
When Painting Is Not the Answer
Refinishing works when the frames are structurally sound. It does not solve:
- Water leaks — If the frames are leaking at the joints, the issue is gasket failure or frame distortion, not finish. Commercial glass repair addresses the seals
- Thermal performance — Older non-thermally-broken frames conduct heat and cold straight through. Painting them does not add insulation. If energy costs are the driver, replacement with thermally broken frames is the right move
- Structural damage — Frames that are cracked, bent, or have visible corrosion pitting through the metal wall need replacement, not paint
- Code upgrades — If the municipality requires updated glazing (tempered or laminated) for safety code compliance, you are replacing the glass anyway. Doing the frames at the same time makes sense
Frequently Asked Questions
Can you paint anodized aluminum window frames?
Yes. Anodized aluminum can be painted with DTM (Direct-to-Metal) acrylic or alkyd paint. The anodized layer is actually a good paint substrate once you clean it with a degreaser and scuff it with 150–220 grit sandpaper or a Scotch-Brite pad. The scuffing creates mechanical tooth for the paint to grip. Without scuffing, the paint will peel.
How much does it cost to paint storefront aluminum frames in Toronto?
For a typical Etobicoke strip mall unit with one storefront window wall and a door, expect $1,500–$4,000 for professional DTM refinishing. This includes cleaning, scuffing, masking the glass, two coats of DTM paint, and cleanup. A full strip mall with 6–8 units done at once runs $8,000–$20,000 — property managers often coordinate this as a single project to reduce per-unit costs.
How long does DTM paint last on aluminum storefront frames?
With proper surface prep, DTM acrylic paint lasts 8–15 years on aluminum frames in the GTA. South-facing facades degrade faster due to UV exposure. North-facing frames can hold colour for 15+ years. Re-coating is simpler than the initial application because the existing paint provides a ready substrate — a light scuff and one fresh coat is usually sufficient.
Should I paint or replace faded storefront frames?
If the frames are structurally sound — no cracks, no water leakage, no thermal bridging issues — painting is the better value. At $1,500–$4,000 versus $8,000–$15,000 for replacement, you get a fresh appearance at a fraction of the cost. Replace if the frames are corroded through, leaking, or if you need to upgrade to thermally broken frames for energy code compliance.
What colour should I paint commercial aluminum frames?
Black is the most popular choice in 2026 — it matches current storefront design trends and hides road grime between cleanings. Dark bronze remains common for older strip malls matching existing brick. White or light grey suits medical and professional offices. Avoid colours lighter than the original anodized finish, as they may require three coats for full coverage.
Managing a property with tired-looking storefront frames? We assess the frames, tell you honestly whether painting or replacement makes more sense, and handle whichever path you choose. Request a commercial assessment — no pressure, just a straight answer.