Costs, Price Factors and 2026 Rules
Asphalt vs metal vs cedar vs slate: roofing material costs in Canada
Compare roofing materials used in Canada on installed price per square, lifespan logic, snow, hail and wildfire performance, weight and warranty terms.
For most Canadian sloped roofs, architectural asphalt shingles are the lowest-cost common option per square, steel or aluminium roofing typically costs roughly two to three times as much installed, cedar shakes and synthetic slate sit in a similar or higher band, and natural slate is usually the most expensive by a wide margin. The cheapest roof per square is not always the cheapest per year: a material that lasts longer, sheds snow or resists hail can cost less over the time you own the house, but only if you stay long enough and the installation is done properly. Use the comparison below to narrow the choice, then get quotes for the same scope in two materials.
This guide is part of the roof replacement cost overview. All prices are illustrative ranges chosen to show the arithmetic.
Materials at a glance
| Material | Illustrative installed price per square | Weight | Typical strengths | Typical weaknesses |
|---|---|---|---|---|
| 3-tab asphalt | $375–$600 | Light | Lowest material cost | Less wind resistance and shorter warranties; fewer product lines still offered |
| Architectural (laminated) asphalt | $450–$750 | Light to moderate | Widely available, many crews, good value | Prorated warranties; sensitive to ventilation |
| Impact-resistant (Class 4) asphalt | $550–$950 | Moderate | Better hail resistance | Price premium; insurer credit not guaranteed |
| Steel or aluminium shingles and ribbed panels | $900–$1,500 | Light | Long life, sheds snow | Snow slides onto walkways; needs skilled flashing |
| Standing seam metal | $1,200–$2,000 | Light | Hidden fasteners, works on lower slopes, non-combustible | Highest metal cost; detailing expertise essential |
| Cedar shakes | $900–$1,600 | Moderate | Traditional look, heritage districts | Combustible, needs maintenance, insurer questions |
| Synthetic slate or shake | $1,000–$1,800 | Light to moderate | Slate or shake look without the weight | Product-specific warranties; fewer experienced crews |
| Natural slate | $2,000–$4,000 | Heavy | Very long life when maintained | Weight may need structural review; specialist trade |
Per square foot, divide by 100: $450–$750 a square is $4.50–$7.50 per sq ft. Those are the units used in the roof replacement cost estimator.
Worked example: one roof, three materials
Take a 24-square roof with a single layer of old shingles. Extras (tear-off, bin, flashing upgrades) are an illustrative $1,800 in each case.
| Option | Calculation (low) | Calculation (high) | Range before tax |
|---|---|---|---|
| Architectural asphalt | 24 × $450 + $1,800 = $12,600 | 24 × $750 + $1,800 = $19,800 | $12,600–$19,800 |
| Steel shingles | 24 × $900 + $1,800 = $23,400 | 24 × $1,500 + $1,800 = $37,800 | $23,400–$37,800 |
| Standing seam | 24 × $1,200 + $1,800 = $30,600 | 24 × $2,000 + $1,800 = $49,800 | $30,600–$49,800 |
Midpoints are $16,200, $30,600 and $40,200. The extra cost of steel over asphalt at the midpoint is $14,400.
Cost per year of service
A simple way to compare is cost ÷ expected years of service. Lifespans vary a great deal with product, installation, ventilation and climate, so the numbers here are assumptions for illustration, not product promises.
- Asphalt at $16,200 over an assumed 22 years = about $736 a year.
- Steel at $30,600 over an assumed 45 years = $680 a year.
On those assumptions, steel is cheaper per year only if you keep the roof for most of its life. If you sell in eight years, you have paid $14,400 more upfront and may or may not recover it in the sale price. Resale value effects are not predictable, so do not rely on them.
Canadian climate considerations
Snow load and shedding. Metal sheds snow readily, which reduces load on the roof but can dump snow on decks, entrances, cars and neighbours' property. Snow guards add cost. Asphalt holds snow, so eave protection and ventilation matter more.
Hail. Parts of Alberta and the Prairies see frequent damaging hail. The City of Calgary's climate-ready guidance describes impact-resistant shingles as more resistant to hail damage. Some insurers offer discounts for impact-resistant roofs; ask yours in writing before paying the premium for that reason alone.
Wildfire. In wildland-urban interface areas, FireSmart guidance favours non-combustible or fire-rated roof coverings. Untreated cedar shakes are the main concern; some municipalities and insurers restrict them.
Coastal wind and rain. On the West Coast and in Atlantic Canada, high-wind application (extra nails, starter strips), proper underlayment and flashing details matter. Ask which wind rating the installation qualifies for under the manufacturer's warranty.
Weight. Natural slate and some concrete or clay tiles are much heavier than asphalt. Switching to a heavier material may require an engineer's review of the rafters or trusses and usually triggers a building permit. See roofing permits by municipality.
Low-slope and flat sections
Shingles of any type need enough slope to shed water. Low-slope porch roofs, dormers and additions often need a membrane instead, which is priced differently. If your roof combines a sloped main roof and a flat section, expect two lines on the quote. See flat roof replacement costs and how pitch changes the price.
Warranties differ by material
Asphalt shingles often come with a "limited lifetime" warranty that is prorated after an initial period, and coverage for labour may be limited unless the installer is certified by the manufacturer and an enhanced warranty is registered. Metal warranties commonly separate the finish (fading, chalking) from the substrate. Read the actual warranty document, not the marketing summary. See manufacturer versus workmanship warranties.
Choosing: a short decision list
- How long will you own the house? Under about ten years, the cheapest durable option often wins.
- Is hail, wildfire or heavy snow a real local risk?
- Do heritage or borough rules restrict materials?
- Can the structure carry the weight?
- Are there experienced installers for that material near you, and will they give a written workmanship warranty?
- Does your insurer treat the materials differently?
FAQ
Is a metal roof louder in rain?
Over a solid deck with underlayment and an insulated attic, many owners notice little difference. Over open framing, as on some cottages or sheds, it can be louder.
Can I put metal over old shingles?
Some metal systems are designed to go over one layer on strapping, and some codes allow it, but it hides the deck condition and can affect warranties. Ask for the manufacturer's written instructions and check local rules.
Does a new roof material change my insurance?
It may. Insurers price roofs by age, material and condition, and some ask for the roof type and year on renewal. Tell your insurer about the new roof and ask whether the premium changes.
Sources
- National Research Council Canada — National Building Code of Canada roofing requirements
- City of Calgary — climate-ready guidance on impact-resistant roofs
- FireSmart Canada — roofing and cladding in wildfire areas
- Insurance Bureau of Canada — consumer information on home insurance and severe weather
- Canada Mortgage and Housing Corporation — homeowner guidance on maintaining roofs
