The comparison
Standing seam vs asphalt in New Hampshire
The short version: standing seam costs about twice as much as architectural asphalt and typically serves two to three times as long, and in New Hampshire it also sheds the snow and ice dams that do asphalt in early. That tilts the long-ownership math toward metal and leaves asphalt a real case in specific situations, named below. This page is the decision, not the sales pitch.
Side by side
| Factor | Standing seam | Architectural asphalt |
|---|---|---|
| Upfront cost | $10 to $18 / sq ft installed | About half the metal number |
| Typical service life | 40 to 70 years (Metal Roofing Alliance; State Farm cites 40 to 80) | 15 to 30 years in this climate |
| Snow behavior | Sheds; loads rarely accumulate full-season | Holds the blanket all winter |
| Ice dams | No laps to exploit; sheds most of the fuel | The classic ice dam victim at NH eaves |
| Maintenance | Inspection-level; details and retention hardware | Granule loss, lifted tabs, periodic repairs, full replacement cycles |
| At resale | Transferable decades of roof life, clean inspection line | Age of roof is a negotiation item after year 15 |
Cost ranges per national references including This Old House; snow context per CRREL TR-02-6.
The economics over an ownership, not a purchase
A roof is a stream of costs, and the streams look different. The asphalt stream is a moderate purchase every 15 to 30 years, each with tear-off and disposal, plus the ice dam and repair budget a New Hampshire winter charges shingles. The metal stream is one larger purchase (roughly $10 to $18 per square foot; whole-house commonly $20,000 to $34,000) and then decades of inspection-level upkeep. Over a 40-year window the totals converge or cross, and metal buys out the winter damage risk along the way. Run your own roof through the worked example in the NH metal roof cost guide. One number that is not in either stream anymore: tax credits. The federal 25C credit expired at the end of 2025 and NHSaves has no roofing rebate.
Winter is the tiebreaker
In a mild climate this comparison is purely financial. Here, the two systems spend the winter doing different jobs: asphalt carries the season's snow (design loads run about 50 pounds per square foot in the southern tier past 120 in the mountains) while its eaves grow the ice dams that pump meltwater under shingle laps; standing seam sheds the load and gives water no lap to find. That difference shows up as repair bills on one side and snow-retention design on the other: shed snow has to land somewhere safe, which is honest metal design, covered at snow guards and ice dam protection. The system itself is explained at standing seam metal roofing.
When asphalt is the right answer
- You are selling soon. A three-year horizon rarely recovers the metal premium; a sound new asphalt roof also lists clean.
- Capital is the constraint. A good asphalt roof now beats a metal roof someday. No apology needed.
- The roofline fights metal. Turrets, tight valleys, and stacked dormers multiply trim labor; on some antiques the metal quote outruns its own logic.
- Uniformity rules apply. Some associations and districts want shingles. Fighting that is a committee project, not a roofing one.
Everyone else lands at the conversion project sooner or later: metal roof replacement walks the sequence, and the New Hampshire Metal Roofing Guide holds the statewide decision framework. The math lands differently by region: the commuter belt around Salem and Derry reprices asphalt constantly, while the White Mountains barely bother with the comparison anymore.