The money guide
What a metal roof costs in New Hampshire
A standing seam metal roof in New Hampshire typically costs $10 to $18 per square foot installed, and a whole-house project commonly lands between $20,000 and $34,000. Exposed-fastener metal runs roughly $7 to $11 per square foot. That is about twice the price of asphalt, for a roof that typically serves two to three times as long. The rest of this page is where those numbers come from and what moves them.
The ranges, system by system
| System | Installed range | Notes |
|---|---|---|
| Standing seam (concealed fastener) | $10 to $18 / sq ft installed | The 40-to-70-year system this site is about. Snap-lock at the lower half, mechanical double-lock and mountain specs at the upper. |
| Exposed-fastener metal panels | Roughly $7 to $11 / sq ft installed | Screw-through panels for barns, camps, and budget jobs. Carries a fastener maintenance schedule; national-guide figures. |
| Architectural asphalt (for comparison) | About half the standing seam number | The 2x rule of thumb holds across national cost guides; asphalt typically serves 15 to 30 years here. |
Ranges from national cost references including This Old House and Angi/HomeAdvisor data, cross-checked at build (2026). Your quote prices your actual roof; these bound what reasonable looks like.
A worked example: the 1,500 square foot roof
Take a Manchester colonial with a simple 1,500 square foot roof (15 squares). At the standing seam range of $10 to $18 per square foot, the project prices between $15,000 and $27,000; a snap-lock system on that simple roofline should quote near the bottom half, and a mechanical double-lock spec with engineered snow retention pushes toward the top. The same roof in exposed-fastener panels prices roughly $10,400 to $16,400 in national estimates, trading concealed fasteners and lifespan for the discount. Add real-world lines before comparing: tear-off and disposal, a per-sheet decking allowance, and the snow guard layout.
What moves the number
Roof size, measured in squares
Roofers price per square (100 square feet of roof surface). Roof area runs bigger than floor area because pitch stretches it, so a 1,500 square foot ranch does not have a 1,500 square foot roof.
Pitch and complexity
Steeper costs more to work safely, and every dormer, valley, ell, and porch roof adds trim, flashing, and hours. A plain colonial rectangle quotes efficiently; an 1890s farmhouse with three additions does not.
Tear-off versus overlay
Stripping the old asphalt adds labor and disposal but exposes the deck for repair, and it is the default assumption in most manufacturer warranty terms. Deck repair belongs in the quote as a per-sheet price.
Panel gauge and finish
24 gauge costs more than 26; a PVDF finish costs more than SMP and holds color longer. These two lines are where quotes that look identical quietly differ.
Region and access
Mountain-town loads require heavier engineering, and hard site access (steep drives, lakeside lots reached by boat ramp roads) adds staging time.
Snow retention
Engineered guard rows over entries and equipment are a real line item, not a freebie. A New Hampshire quote without one is incomplete, not cheaper.
The 40-year view
Metal typically serves 40 to 70 years (Metal Roofing Alliance; State Farm guidance cites 40 to 80), asphalt 15 to 30. Over a 40-year window, the asphalt path is two or three purchases plus tear-offs and disposal; the standing seam path is one. On the worked example above, $24,000 of standing seam over 40-plus years runs about $600 a year, while $12,000 of asphalt bought roughly every 20 years runs about the same before its extra tear-offs, ice dam repairs, and the fact that each replacement cycle reprices at future labor rates. The premium buys the years; the full comparison, including where asphalt still wins, is the standing seam vs asphalt guide.
No credit, no rebate, no exceptions
The federal energy-efficiency credit (section 25C) expired for property placed in service after December 31, 2025, and even before that only certain reflective ENERGY STAR metal roofs qualified. NHSaves has no roofing rebate. Budget the real number, and treat any pitch built on a credit or rebate as a sign to re-check everything else in the quote.
Reading a quote like it matters
New Hampshire has no contractor license, so the written quote does the work a credential would. Five named items make quotes comparable: panel system, metal, gauge, finish, snow retention layout, plus a per-sheet decking price for surprises. The systems behind those words are explained at standing seam metal roofing, the project sequence at metal roof replacement, and the whole decision at the New Hampshire Metal Roofing Guide. Regional wrinkles, from mountain premiums to Seacoast salt-air specs, live on the region pages.