The detailed take
The lifetime cost math everyone misses
Most homeowners compare metal and asphalt on sticker price alone, which makes asphalt look like the clear winner. But comparing two roofs over a 50-year ownership horizon flips the answer.
A typical Edmonton residential roof (say 1,800 sq ft) costs $9,000–$13,000 in asphalt installed. The same roof in standing seam metal runs $22,000–$32,000. Asphalt looks cheaper by $13,000–$23,000 up front.
Now add in replacement cycles. The asphalt roof needs replacement at year 15–20, then again at year 30–40. Each replacement is another $11,000–$15,000 (asphalt prices rise with inflation). Over 50 years, you're spending $35,000–$50,000 on asphalt re-roofs. The metal roof was installed once and is still under warranty.
Add insurance: most Alberta insurers offer 5–25% premium reductions for hail-rated metal roofs. On a $1,800/yr policy, that's $90–$450 saved per year — over 50 years, $4,500–$22,500 more in your pocket.
The honest lifetime math: metal is cheaper than asphalt over a 50-year ownership window, by a meaningful margin. Most Edmonton homeowners just don't stay in one home long enough to see it.
Hail performance: where the gap is biggest
Alberta sits in one of the most active hail corridors in Canada. Edmonton, Sherwood Park, Beaumont, and Leduc see meaningful hail events every 2–3 years on average, with a major storm (golf-ball-sized stones or larger) every 5–7 years.
Asphalt shingles fail almost predictably in hailstorms. Granules dislodge, the mat cracks, and water finds its way to the deck. Most insurers will replace an asphalt roof after a hail claim — but they also raise the homeowner's premium afterward.
Metal roofing handles hail differently. Standing seam panels and metal shingles carry full impact ratings — the steel substrate may dent superficially in extreme storms but doesn't crack, doesn't lose its finish, and doesn't leak. Most importantly, you don't file a claim.
After the 2022 Edmonton-area hailstorm, we did 80+ asphalt-to-metal conversions for homeowners using their insurance claim as the foundation. Almost all of them said the same thing: 'I should have done this the first time.'
Where asphalt actually makes sense
Asphalt is the right choice in three scenarios:
(1) You're flipping the property within 1–3 years. The new owner gets a brand-new roof; you don't capture the lifetime value of metal. Asphalt's lower cost wins.
(2) Your house is in a low-hail microclimate (north of Edmonton, parts of north central Alberta) AND you're not staying long-term. Hail risk doesn't justify the metal premium.
(3) The structural deck or framing needs significant repair before any new roof can go on. If you're already spending $15,000 on substrate work, financing a metal roof on top of that may be a stretch.
Outside those three scenarios, the asphalt-vs-metal question almost always answers itself in metal's favour over a 10+ year window.
What about "metal roof over asphalt"?
Many metal-roof installs in Edmonton can be done over existing asphalt shingles, saving the cost of tear-off. This is sometimes the right call — but only if (a) the existing shingles are flat (no curling), (b) the structural deck is in good condition, and (c) you're not chasing manufacturer warranties that require full deck inspection.
We generally recommend full tear-off for two reasons. First, it lets us inspect the deck and underlayment and address any rot or wet sheathing before the new roof goes on. Second, it puts a fresh, single-layer underlayment system between deck and panel — which is critical for managing condensation and ice damming in Alberta winters.
Tear-off adds 1–2 days and ~$1.50–$2.50/sq ft to the cost. For a long-term install, it's worth it.