Two Dominant Forces in Ontario Exterior Cladding
For decades, aluminum was the default choice for exterior cladding across Southern Ontario. But the siding market has dramatically shifted — and for good reason. Understanding the core differences helps you make an informed decision that will define your home's appearance and energy performance for the next 30 years.
Durability in Ontario Conditions
Vinyl: Modern vinyl siding is engineered specifically to handle the extreme freeze-thaw cycling of Ontario winters. It never rusts, won't absorb moisture, and factory-fused colour means it genuinely cannot peel or chip. Hail resistance varies by thickness — always request 0.044" panels minimum.
Aluminum: Aluminium is structurally very strong and completely impervious to rust, but it dents permanently under hail impacts or physical collision. Point impacts from ladder contact or thrown debris leave lasting marks that are nearly impossible to remove cleanly.
Insulation Performance
This is where modern vinyl wins decisively. Insulated vinyl siding — which has expanded polystyrene foam bonded directly to the panel back — boosts your wall's total R-value by 2–3 points, directly reducing heating bills. Aluminum provides zero inherent insulation value.
Cost Comparison
- Aluminum siding: $5.00–$8.50 per sq ft installed
- Standard vinyl siding: $4.50–$7.00 per sq ft installed
- Insulated vinyl siding: $7.00–$10.00 per sq ft installed
Maintenance Requirements
Aluminum requires periodic repainting every 10–15 years as the factory coating oxidizes. Premium vinyl never needs painting — simply power-wash annually to maintain a like-new appearance for 30+ years.
The Verdict for Ontario Homes
For most homeowners in Hamilton, Burlington, Grimsby, or Brantford, insulated vinyl siding represents the superior long-term value: lower maintenance, better energy performance, and no denting risk. Aluminum remains a niche choice only where extreme impact resistance in exposed industrial settings is the priority.
Can vinyl siding be painted if I change my mind on colour later?
Yes, though it requires specific exterior latex paint formulated for flexible vinyl substrates. Darker colours can cause heat retention and minor warping if the original panels were light-coloured — stick to similar tonal ranges or lighter shades.
Does new siding add home resale value?
Consistently yes. New siding typically returns 70–80% of its cost in resale value according to annual remodelling cost studies, while dramatically improving first-impression appeal.