Asphalt, Metal, or Tile: Choose Your Roof by Decades Per Dollar
The cheapest roof and the cheapest roof per year are rarely the same roof. Run the numbers on your climate and your rafters before you pick a shingle color.
A roof is the biggest weather decision on a house, and most people make it in a ten-minute call with whoever answered the phone first. Asphalt covers three-quarters of American homes because it is cheap and every crew knows it, but cheap up front is not cheap over 30 years. Metal and tile cost two to four times more on day one and can cost less per year of service. Think in decades per dollar — installed cost divided by realistic service life — and that number sorts out most of the marketing.
What your climate is doing to your roof
High-UV climates cook asphalt; a shingle good for 25 years in Minnesota lasts 15 to 18 in Phoenix. Hail over 1 inch bruises asphalt and dents thin metal; impact-rated products may earn an insurance discount. Heavy snow favors metal because it sheds — onto whatever is below, so entries need snow guards. Coastal salt eats thin steel; aluminum earns its premium there.
Measure your slope
Set a level against a rafter and read rise over a 12-inch run. Below 2:12 shingles and most tile are not permitted. From 2:12 to 4:12 shingles need doubled underlayment and tile becomes marginal. Above 4:12 everything is on the table; steeper than 9:12 adds 15 to 30 percent labor because the crew is on ropes.
Check what the framing can carry
Asphalt weighs 2.5 to 4 pounds per square foot installed; standing-seam steel about 1 to 1.5; concrete tile 9 to 12; clay 6 to 15. Most trussed roofs since the 1970s were designed for asphalt plus snow load and cannot take tile without an engineer’s letter and often added bracing. Budget $400 to $800 for that review before you fall for terracotta.
Price the three honestly
Installed in 2026, architectural asphalt runs roughly $4.50 to $7.50 per square foot; standing-seam metal $10 to $18; concrete tile $10 to $16; clay $15 to $30. A 2,000-square-foot roof lands near $12,000 for asphalt, $28,000 for metal, and $26,000 to $50,000 for tile. Make every bid itemize tear-off, underlayment, flashing, and vents.
Divide by realistic service life
Realistic, not warranty. Asphalt: 18 to 25 years temperate, 12 to 18 in hot or hail country. Metal: 40 to 60. Concrete tile: 50-plus, but its underlayment needs replacing at 25 to 30 years, an $8,000 to $15,000 job. On the example roof, asphalt is about $600 per year, metal about $560, and tile with one underlayment about $760.
Weigh what the formula misses
Metal can often go over one existing shingle layer and cuts cooling loads 10 to 20 percent with a reflective finish. Tile is brittle underfoot, so every future solar or chimney job costs more. Asphalt is the only one every roofer repairs cheaply. Some HOAs forbid metal — read the covenants first.
Never let anyone install tile over unchecked framing, or leave old flashing under a new roof of any material. Soft decking found during tear-off gets replaced at $70 to $120 per sheet; a bid without an allowance for it will grow on demolition day.
Warranty years are marketing. Service years in your zip code are what you are buying.
Making any of them last
Whatever you choose, the roof dies at its details, not its field. Keep gutters clear, trim branches that scrub the surface, and walk the perimeter every spring looking at flashing, boots, and ridge caps. Metal wants fasteners checked at years 10 and 20; tile wants underlayment inspected at 20; asphalt wants moss treated the first year it shows.
Keep the momentum going
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