Permit
Roofing is not exempt
The residential code’s permit-exempt list (R105.2) has no roofing line. Sudbury’s building department issues it, and the application carries the contractor’s HIC registration number.
Roof Replacement in Sudbury, MA
Half of the 6,497 homes in Sudbury were built before 1977. What the code requires when that roof is replaced, and who signs off, is below.
New Roofing Costs connects homeowners with independent local roofing contractors. We do not perform roofing work.
Call (833) 781-1806 Replacement and new roofs only · homeowners
This number connects homeowners who are planning a new roof or a full roof replacement with independent local roofing contractors. It is not for leak repairs or patch jobs. The call must come from the homeowner who decides on the roof. Calls may be recorded.
The rules for a reroof in Sudbury
Layers
Two layers means a tear-off
A new roof may go over one existing layer; with two or more, or over slate, clay or cement tile, everything comes off to the deck (IRC R908.3.1.1). With 54% of Sudbury’s homes were built before 1980, ask what is under the newest layer.
Source: IRC 2021, Chapter 9 (Pennsylvania edition, UpCodes); 780 CMR 51.00, Chapter 9 amendments
Ice barrier
Required in Sudbury, as in every Massachusetts town
The state’s climate table marks the ice barrier “yes” statewide. It runs from the eave to 24 inches inside the exterior wall, more on steep roofs (IRC R905.1.2); check that the quote lists it.
Source: 780 CMR 51.00, Chapter 3 amendments (Tables R301.2(1) and R301.2(2)); IRC 2021, Chapter 9 (Pennsylvania edition, UpCodes)
Wind and snow
118 mph design wind, 40 psf ground snow
Sudbury’s code design values are a 118 mph ultimate design wind speed and a 40 psf ground snow load (30 psf minimum flat-roof snow load). At that wind speed the code calls for asphalt shingles labeled ASTM D7158 Class G or H (Table R905.2.4.1).
Source: 780 CMR 51.00, Chapter 3 amendments (Tables R301.2(1) and R301.2(2)); IRC 2021, Chapter 9 (Pennsylvania edition, UpCodes) (780 CMR 51.00, Table R301.2(2))
Rules as read on October 24, 2026. Code edition, permit and contract rules for the whole state: roof replacement in Massachusetts.
Homes and roofs in Sudbury
Of 6,297 occupied homes in Sudbury, 5,663 (90%) are owner-occupied. By year built, 6% before 1940, 25% before 1960, 54% before 1980; 24% went up in 2000 or later. (ACS 2020–2024.)
By building type: 84% detached houses, 8% attached single-family houses (rowhouses, twins and townhouses).
Of the 54 Middlesex County municipalities on this site, Sudbury has the 42nd largest share of homes built before 1980: 54%, against a county range of 29% to 87%.
ZIP codes: 01776
Sudbury and the towns around it
| Place | Median built | Before 1980 | Owners | Row, twin | Hail days |
|---|---|---|---|---|---|
| Sudbury | 1977 | 54% | 90% | 8% | 8 |
| Maynard | 1963 | 69% | 75% | 9% | 10 |
| Wayland | 1962 | 69% | 88% | 10% | 9 |
| Framingham | 1966 | 73% | 55% | 5% | 10 |
| Stow | 1974 | 60% | 85% | 5% | 10 |
| Concord | 1969 | 65% | 76% | 5% | 7 |
Median built: median year the homes were built. Before 1980: share of homes built then. Owners: share of homes that are owner-occupied. Row, twin: share of homes that are rowhouses, twins or townhouses. Census ACS 2020–2024. Hail days: days with hail of 1 inch or larger within 10 miles, 2006–2025, NOAA Storm Prediction Center.
Storm record around Sudbury
Since 2006 the National Weather Service has logged hail of 1 inch or larger on 8 separate days within 10 miles of Sudbury; the largest was 2 in on August 4, 2015. The most recent was June 6, 2020.
That is fewer than most places in the state on this site (median 10 days).
Federal major-disaster declarations for storms in Middlesex County since 2006: 8, most recently DR-4379, Severe Winter Storm and Snowstorm, declared July 2018. (OpenFEMA.)
A report says hail fell near Sudbury, not that it damaged a roof. When wind or hail damage means a new roof.
What goes on the roof next
HUD’s useful-life figures are for planning; a warranty is a separate promise. For Sudbury’s houses: More in the guides to shingles, metal, slate and flat roofs.
| Material | HUD useful life | Fits a house like | Watch for |
|---|---|---|---|
| Asphalt shingles | 20 years | Most pitched roofs; 84% of homes here are detached | Class G or H at 118 mph design wind (IRC Table R905.2.4.1) |
| Metal (standing seam, panels) | 50 years | Roofs that will carry solar later | Standing seam that carries its own loads can skip the tear-off (R908.3.1) |
| Slate | 75 years | Older houses; 6% here predate 1940 | Sound slate can be reused (R908.5); broken slate cannot |
| Flat roof: EPDM or TPO | 15 years | Porches, additions, low-slope rears | Where the roof meets a wall or parapet |
Checking a contractor in Massachusetts
In Sudbury the contractor’s HIC registration (M.G.L. c. 142A) and the CSL of the supervisor licensed for roof covering are the two numbers to look up before signing.
The price side is in what a new roof costs in Massachusetts; the paperwork side in checking a roofing contractor.
Questions about a new roof in Sudbury
Does a roof replacement in Sudbury need a permit?
Roofing is not exempt. The residential code’s permit-exempt list (R105.2) has no roofing line. Sudbury’s building department issues it, and the application carries the contractor’s HIC registration number.
Is a roof-over allowed in Sudbury, or is it a tear-off?
A new roof may go over one existing layer; with two or more, or over slate, clay or cement tile, everything comes off to the deck (IRC R908.3.1.1). With 54% of Sudbury’s homes were built before 1980, ask what is under the newest layer.
How old are the houses in Sudbury?
By the Census Bureau’s American Community Survey (2020–2024), the median home in Sudbury was built in 1977, 54% of homes were built before 1980, 90% are owner-occupied.
How many hail days has Sudbury had?
Hail of 1 inch or larger was reported on 8 days within 10 miles of Sudbury from 2006 through 2025 (NOAA Storm Prediction Center). A report means hail fell nearby, not that a roof was damaged.
How do I check a roofing contractor in Sudbury?
In Sudbury the contractor’s HIC registration (M.G.L. c. 142A) and the CSL of the supervisor licensed for roof covering are the two numbers to look up before signing.
What they will ask on the phone
- The street address in Sudbury, or at least the ZIP code
- One story or two (or more), detached or attached
- What is on the roof now (asphalt shingles, metal, slate, tile, or a flat membrane) and roughly how old it is
- The number of layers, if anyone has counted
- Your timing for a complete replacement
- Any historic-district or HOA rules on the house in Sudbury
- That you are the owner and the one who decides
The full list: before you call.