Replacement cost calculator
Both coverings priced on your own square count.
Best overall — architectural asphalt, on a house you will sell inside twenty years.
Best on a budget — 3-tab asphalt, and only where wind is not the design case.
Longest life — standing seam, at two to three times the money and at least twice the roof.

Our pick — Architectural asphalt: the default answer for a normal house on a normal budget
| 3-tab asphalt | Architectural asphalt | Exposed-fastener metal | Standing seam | |
|---|---|---|---|---|
| Installed $ / square | $300–$500 | $400–$800 | $350–$2,600 | $700–$3,000 |
| Service life | 15–20 yr | 25–30 yr | 50–70 yr | 50–70 yr |
| Dead load | light | light | lightest | lightest |
| Minimum pitch | 2:12 | 2:12 | per panel sheet, ½:12–3:12 | per panel sheet, ½:12–3:12 |
| Fastener through weather plane | ||||
| Repairable by a general roofer | ||||
| Walkable after install | ||||
| Colour / profile choice | narrow | wide | wide | wide |
| Material warranty | 25-yr limited | lifetime limited | paint + substrate, by maker | paint + substrate, by maker |
A mat impregnated with asphalt and surfaced with ceramic granules. Cheap to make, cheap to fit, repairable by anyone, and available in every colour a subdivision has ever demanded. Its life is set by heat and UV, which is why attic ventilation matters more to an asphalt roof than to any other kind. Detailed pricing is on the asphalt cost guide.
Coated steel, formed into panels and held down either through the face or by concealed clips. It is lighter than asphalt, sheds snow, cannot burn, and lasts at least twice as long. Against that: it typically costs two to three times as much, it needs a roofer who understands thermal movement, and a repair means a panel rather than a shingle. The metal cost guide breaks the systems apart, the standing seam vs exposed fastener comparison makes the choice inside metal, and how metal roofs are installed covers whether metal can go over your existing shingles. For a section of the roof below the shingle minimum, neither covering applies — that is membrane territory, compared in TPO vs EPDM.
On a 21-square roof, architectural asphalt at the bottom of its band is about $8,400 and is rated for 25–30 yr. Standing seam at the bottom of its band is about $14,700 and runs 50–70 yr. Over sixty years the asphalt house buys at least two roofs and pays a tear-off each time; the metal house buys one. The costs converge, and then metal wins — but only if you are still there. That is the whole decision.
Buying checklist
Both coverings priced on your own square count.
The choice inside asphalt, before the choice between materials.
The service-life number this comparison turns on.
Once metal wins, the choice inside metal.
Can metal go over shingles? What the code allows.