Asphalt Shingles vs Metal Roofing in Ontario: Which Roof Actually Performs Better?
- Jamal Beydoun
- Feb 21
- 3 min read
Updated: 5 days ago
A practical Ontario comparison of ice dams, wind, warranties, and long-term maintenance — by Boring Contractor Roofing.
If you’re replacing your roof in Southern Ontario, you’ve probably heard two strong opinions:
Metal lasts longer.
Shingles are cheaper and good enough.
Both are true — but neither tells you which option is right for your house.
The better decision comes from understanding how each material performs in Ontario’s climate and what matters most for your specific situation.
Ontario winters are hard on roofs for one main reason
Southern Ontario is tough on roofs because we get long winters, frequent freeze–thaw swings, and thaws that push water into places it shouldn’t go.
One of the most common cold-climate problems is ice damming: snow melts higher on the roof, refreezes at the colder edges (the eaves), and the resulting ice can block drainage — forcing water back under roofing layers.
The National Research Council explains it clearly:
Melting snow flows down the roof to the eaves where it may refreeze… the ice accumulation can then obstruct further drainage and water may enter the building
That’s why in Ontario, the best roof isn’t just about material — it’s about how well the system is built to handle water, ice, and airflow.
That’s why installation details matter more than material alone.
When Asphalt Shingles Are the Better Choice
Asphalt shingles are often the right option when:
Budget matters most: Shingles typically cost less upfront than metal, which makes them the practical choice for many homeowners.
Your home has high-traffic areas below the eaves: Metal sheds snow more easily, which can create sudden snow-slide hazards over walkways, driveways, decks, and entries. Shingles tend to hold snow more gradually.
You might move within 10–15 years: If you won’t own the home long term, you may not capture the full lifespan value of metal.
Your roof design is complex: Dormers, valleys, chimneys, skylights, and lots of penetrations often make shingles simpler and more cost-effective to detail.
Bottom line: shingles are a solid Ontario choice — when installed correctly and quoted properly.
When Asphalt Shingles Are the Better Choice
Metal roofing can be a great fit when:
You plan to stay in the home long-term: Metal’s lifespan advantage matters most when you’ll own the home for decades.
You want less maintenance over time: Metal doesn’t crack or lose granules the way asphalt systems can.
Your roof design supports safe snow shedding: Steeper roofs and layouts without key areas directly below eaves tend to be better candidates.
You value durability over upfront cost: You’re paying more now for fewer replacement cycles later.
Important note: metal changes how your roof behaves — it doesn’t eliminate winter risks. Snow management and detailing still matter.
When Asphalt Shingles Are the Better Choice
Before you decide, think through these Ontario-relevant questions:
Where does snow/ice fall on your property? (walkways, decks, driveway, hot tub area)
How complex is your roofline? (valleys, dormers, multiple transitions)
How long are you staying in the home?
What’s your priority: lowest upfront cost, or lowest “roof hassle” over time?
Do you have recurring ice dam symptoms today? (big icicles, leaks during thaws, staining near exterior walls)
These answers usually make the choice obvious.
A Good Ontario Roof Replacement Should Always Address
Regardless of whether you choose shingles or metal, your contractor should be talking about these four things:
Eave protection (ice barrier): This protects the most vulnerable edge of the roof during freeze–thaw cycles and ice dam conditions.
Ventilation balance: Balanced intake/exhaust airflow helps keep the roof deck colder and reduces moisture buildup.
Flashing details: Chimneys, valleys, vents, skylights, and wall transitions are the most common leak points — material choice won’t save you if these are sloppy.
Proper drainage paths: Water needs clean exits: gutters, downspouts, and grading that moves water away from the foundation.
If your quote doesn’t clearly spell these out, you’re not comparing apples to apples.
Not sure what’s right for your house?
Contact Boring Contractor Roofing for a no-pressure inspection and consultation. We’ll walk you through shingles vs metal based on your roof layout, your snow/ice risk areas, your budget, and your long-term plans — and provide a quote that clearly covers the details that matter in Ontario.
Frequently Asked Questions
Is metal always better than shingles in Ontario?
No. Metal can last longer, but shingles can be the better value depending on budget, roof complexity, and snow-slide risk.
Will metal prevent ice dams?
Not necessarily. Ice dams are usually driven by heat loss and refreezing at the eaves — installation details matter more than the surface material.
Do shingles fail faster in Ontario?
They can if ventilation, eave protection, drainage, and flashing aren’t done properly.
Is metal worth the extra cost?
It depends on how long you’ll stay in the home and whether you value longevity and lower maintenance enough to justify the upfront premium.
Comments