Permit
Expect a building permit
The residential code’s permit-exempt list (R105.2) has no roofing line. In Danvers the building department takes the application, with the contractor’s home improvement registration on it.
Roof Replacement in Danvers, MA
Danvers has 11,536 homes, and half of them were standing by 1963. 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 Danvers
Layers
One old layer can stay; two cannot
On a roof that already carries two layers, or slate or tile, the code allows no recover: it is a tear-off (IRC R908.3.1.1). With 70% of Danvers’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 Danvers
Massachusetts answers “yes” to the ice barrier for every town. That is a self-adhering membrane, or two cemented layers of underlayment, from the eave to at least 24 inches inside the wall line (IRC R905.1.2).
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, 50 psf ground snow
Danvers’s code design values are a 118 mph ultimate design wind speed and a 50 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))
Checked against the code text on October 24, 2026. The state’s code edition and the rest of its rules: roof replacement in Massachusetts.
Homes and roofs in Danvers
Of 11,005 occupied homes in Danvers, 7,619 (69%) are owner-occupied. Counting by decade, 25% before 1940, 44% before 1960, 70% before 1980 of the housing was in place, and 17% dates from 2000 on. (ACS 2020–2024.)
The housing is 58% detached houses, 6% attached single-family houses (rowhouses, twins and townhouses), 11% buildings of two to four units.
Of the 34 Essex County municipalities on this site, Danvers has the 16th largest share of homes built before 1980: 70%, against a county range of 41% to 89%.
ZIP codes: 01923 · 01937
Danvers and the towns around it
| Place | Median built | Before 1980 | Owners | Row, twin | Hail days |
|---|---|---|---|---|---|
| Danvers | 1963 | 70% | 69% | 6% | 7 |
| Peabody | 1966 | 64% | 66% | 5% | 8 |
| Middleton | 1986 | 41% | 93% | 10% | 10 |
| Wenham | 1961 | 73% | 86% | 6% | 7 |
| Topsfield | 1969 | 69% | 90% | 6% | 7 |
| Lynnfield | 1964 | 73% | 87% | 5% | 10 |
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.
Hail and storms near Danvers
Within 10 miles of Danvers, hail of an inch or more was reported on 7 days between 2006 and 2025, the biggest stones 3 in on July 11, 2006. The most recent was August 23, 2020.
That is fewer than most places in the state on this site (median 10 days).
Essex County has had 9 federal major-disaster declarations for storms since 2006; the latest was DR-4379, Severe Winter Storm and Snowstorm (July 2018). (OpenFEMA.)
Storm reports are what observers logged, not a measure of damage to any roof. When wind or hail damage means a new roof.
What goes on the roof next
Lifespans come from HUD’s capital-needs table, not from a brochure. 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; 58% 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 | A complete standing-seam system may go over the old roof (R908.3.1) |
| Slate | 75 years | Older houses; 25% here predate 1940 | Sound slate can be reused (R908.5); broken slate cannot |
| Flat roof: EPDM or TPO | 15 years | Additions and porch roofs | Where the roof meets a wall or parapet |
Checking a contractor in Massachusetts
Two numbers to ask for in Danvers: the HIC registration (M.G.L. c. 142A, for owner-occupied homes of one to four units) and the construction supervisor license (CSL) with the roof covering specialty.
Contracts, deposits and the right to cancel: checking a roofing contractor. What moves the price: new roof cost in Massachusetts.
Questions about a new roof in Danvers
Does a roof replacement in Danvers need a permit?
Expect a building permit. The residential code’s permit-exempt list (R105.2) has no roofing line. In Danvers the building department takes the application, with the contractor’s home improvement registration on it.
Do the old shingles have to come off in Danvers?
On a roof that already carries two layers, or slate or tile, the code allows no recover: it is a tear-off (IRC R908.3.1.1). With 70% of Danvers’s homes were built before 1980, ask what is under the newest layer.
When were most homes in Danvers built?
By the Census Bureau’s American Community Survey (2020–2024), the median home in Danvers was built in 1963, 70% of homes were built before 1980, 69% are owner-occupied.
Does Danvers get hail that damages roofs?
Hail of 1 inch or larger was reported on 7 days within 10 miles of Danvers from 2006 through 2025 (NOAA Storm Prediction Center). A report means hail fell nearby, not that a roof was damaged.
What license or registration should a roofer in Danvers have?
Two numbers to ask for in Danvers: the HIC registration (M.G.L. c. 142A, for owner-occupied homes of one to four units) and the construction supervisor license (CSL) with the roof covering specialty.
What they will ask on the phone
- Where the house is: the Danvers address or ZIP
- The number of stories, and whether the house stands alone
- What is on the roof now (asphalt shingles, metal, slate, tile, or a flat membrane) and roughly how old it is
- Whether there is one layer or more, if you know
- That the job is a full replacement or a new roof, and your timing
- Whether the house is in a historic district or an HOA
- That the house is yours and the decision is yours
The full list: before you call.