A roof replacement in New England is as much about ice and water management as it is about shingles. The shingle line item is the easy part to compare between bids; the underlayment, ice-and-water coverage, flashing, and ventilation details are where bids actually differ.
A 1,600 sq ft scope at a mid-range finish, with each metro's cost factor applied and a 10% contingency included. Estimates for budgeting, not quotes.
| Metro | Low | Likely | High |
|---|---|---|---|
| Manchester, NH1.00× metro factor | $79k | $131k | $210k |
Estimated range — based on BLS OEWS national average wages and BLS PPI material indexes applied to Our Haus baseline unit costs, as of June 2026. Estimates are shown as a range and help set expectations. They are not a quote, a verified price, or an appraisal of what a contractor will charge.
Compare the underlayment and flashing lines, not the shingle brand. Ice-and-water coverage, whether step flashing is new or reused, the sheathing unit price, and the ventilation plan explain most of the spread.
It can be done when a roof is failing, but asphalt shingles need warm surfaces to seal. Cold-weather installs generally require hand-sealing tabs and cost more. Schedule April through November when you have the choice.