Choosing between metal and asphalt roofing is one of the biggest decisions Vancouver Island homeowners face when it is time for a new roof. Both materials are proven performers, but they behave very differently in our unique coastal climate. After over 30 years installing both materials across Campbell River and the surrounding communities, here is our honest comparison.
Side-by-Side Comparison
| Feature | Metal Roofing | Asphalt Shingles |
|---|---|---|
| Lifespan | 40-70 years | 15-25 years |
| Upfront Cost | $10,000 - $25,000 | $5,000 - $12,000 |
| Cost Per Year | $250 - $450/yr | $250 - $600/yr |
| Maintenance | Very low — occasional inspection | Moderate — moss removal, repairs |
| Rain Performance | Excellent — sheds water rapidly | Good — can retain moisture over time |
| Wind Resistance | 200+ km/h (interlocking panels) | 110-180 km/h (varies by grade) |
| Moss Resistance | Excellent — smooth surface | Poor — moss loves textured shingles |
| Salt Air | Good with proper coatings | Not affected |
| Energy Efficiency | Superior — reflective coatings | Standard |
| Aesthetics | Modern, clean lines | Traditional, many colour options |
| Weight | Lightweight (0.5-1.5 lbs/sq ft) | Heavier (2-4 lbs/sq ft) |
| Recyclability | 100% recyclable | Limited recycling options |
Vancouver Island-Specific Considerations
Rain and Moisture
Vancouver Island receives some of the highest annual rainfall in Canada. Campbell River alone averages over 1,400 mm per year. Metal roofing has a clear advantage here — its smooth, continuous surface sheds water immediately with no absorption. Asphalt shingles, while designed to handle rain, have a textured surface that retains moisture. Over time, this constant dampness accelerates granule loss and can shorten the shingle's effective lifespan.
Wind and Storms
Coastal storms regularly bring strong winds to the Island. Metal roofing panels interlock mechanically and are rated for extreme wind speeds, making them the superior choice for exposed properties near the water. Asphalt shingles can lift in high winds, especially as they age and the adhesive strips weaken. If your home is in an exposed location — near the ocean or on a hilltop — metal roofing provides significantly better storm protection.
Moss and Algae Growth
This is a major factor on Vancouver Island. Our combination of rain, mild temperatures, and shade from surrounding trees creates ideal conditions for moss growth. Metal roofing is naturally resistant to moss and algae because of its smooth surface — moss simply cannot get a foothold. Asphalt shingles, with their granulated texture, are highly susceptible to moss growth. Regular moss removal is essential for asphalt roofs on the Island, which adds to the lifetime maintenance cost.
Salt Air Exposure
Properties close to the ocean in Campbell River and on Quadra Island or Cortes Island face salt air corrosion. Modern metal roofing systems use protective coatings (Kynar/PVDF finishes) that resist salt air corrosion effectively, but cheaper uncoated metal can degrade. Asphalt shingles are not affected by salt air, which gives them an advantage for waterfront properties if budget is a primary concern.
When to Choose Metal Roofing
- ✓ You plan to stay in your home long-term (10+ years)
- ✓ Your property is in an exposed or windy location
- ✓ You are tired of dealing with moss buildup
- ✓ You want the lowest total cost over the roof's lifetime
- ✓ You want a "last roof you will ever install" solution
- ✓ You prefer minimal ongoing maintenance
When to Choose Asphalt Shingles
- ✓ Your budget is limited and you need the lowest upfront cost
- ✓ You are selling the home in the next few years
- ✓ You want a traditional appearance to match the neighbourhood
- ✓ Your roof has a complex design that is easier to shingle
- ✓ You are comfortable with regular moss maintenance
Our Recommendation
For most Vancouver Island homeowners who plan to stay in their homes, we lean toward metal roofing as the better long-term investment. The combination of superior rain performance, moss resistance, wind durability, and lifespan makes it particularly well-suited to our climate. When you factor in the reduced maintenance costs and the fact that you may never need another roof, the total cost of ownership often favours metal.
That said, asphalt shingles remain a solid, proven choice — especially modern architectural shingles from manufacturers like CertainTeed. If budget is your primary concern, a quality asphalt installation from an experienced roofer will still serve you well for 20+ years. The key is proper installation and regular maintenance. Read our roof cost guide for current pricing on both options.
