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Grafton requires a building permit for roof replacement, filed with the town Building Department, and Massachusetts code requires an ice-and-water shield membrane at the eaves and in valleys to guard against the ice dams that form here. Most asphalt jobs are a full tear-off to the deck so the contractor can inspect and replace rotted sheathing before re-roofing. Homes in the historic center or older mill villages should confirm whether any local historic review applies before changing roofing material, profile, or color. Reputable roofers pull the permit and schedule inspections as part of the job.

Roofing costs in Grafton sit a bit below the eastern-Massachusetts average thanks to central-Massachusetts labor rates. A full asphalt-shingle tear-off and replacement generally runs $8,000–$24,000 depending on size, pitch, and layers removed; a flat or low-slope EPDM rubber roof on a porch or addition runs about $7,000–$17,000. Standing-seam metal runs roughly $20,000–$44,000. Slate roofs on older village homes cost more, both to repair and to replace in kind. Steep, multi-dormer center homes land toward the higher end of the asphalt range.

Massachusetts requires a written contract and a Home Improvement Contractor registration for most residential roofing work; ask for the registration number and check it before paying a deposit.

More on permits, costs, rebates and common questions, plus every other roofing contractor serving the town, on the Roofing in Grafton page.