North Haven has 9,870 homes, and half of them were standing by 1964. What the code requires when that roof is replaced, and who signs off, is below.
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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.
Permit
Without a permit, Connecticut allows only:
Repairs that are limited to 25 percent of roof covering and building siding within one calendar year.
2022 CSBC, (Amd) R105.2, item 11
Replacing the whole roof crosses that line; North Haven’s building department issues the permit.
Layers
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 North Haven’s homes were built before 1980, ask what is under the newest layer.
Source: IRC 2021, Chapter 9 (Pennsylvania edition, UpCodes); 2022 Connecticut State Building Code
Ice barrier
Connecticut 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: 2022 Connecticut State Building Code; IRC 2021, Chapter 9 (Pennsylvania edition, UpCodes)
Deck joints
Connecticut adds a 4-inch self-adhering strip over all joints of a plywood or OSB deck ((Amd) R905.1.1). It is not needed under a fully adhered membrane, or on board decks under 3 feet wide.
Wind and snow
North Haven’s code design values are a 120 mph ultimate design wind speed and a 30 psf ground snow load; it is in Connecticut’s hurricane-prone region. At that wind speed the code calls for asphalt shingles labeled ASTM D7158 Class G or H (Table R905.2.4.1).
Source: 2022 Connecticut State Building Code; IRC 2021, Chapter 9 (Pennsylvania edition, UpCodes) (2022 CSBC, Appendix AY)
Checked against the code text on October 24, 2026. The state’s code edition and the rest of its rules: roof replacement in Connecticut.
81% of the occupied homes in North Haven are lived in by their owners: 7,796 households, the people this line is for. Counting by decade, 10% before 1940, 43% before 1960, 70% before 1980 of the housing was in place, and 10% dates from 2000 on. (ACS 2020–2024.)
The housing is 81% detached houses, 4% attached single-family houses (rowhouses, twins and townhouses).
Of the 27 New Haven County municipalities on this site, North Haven has the 8th largest share of homes built before 1980: 70%, against a county range of 38% to 87%.
ZIP codes: 06473
| Place | Median built | Before 1980 | Owners | Row, twin | Hail days |
|---|---|---|---|---|---|
| North Haven | 1964 | 70% | 81% | 4% | 6 |
| Hamden | 1964 | 68% | 62% | 6% | 9 |
| North Branford | 1977 | 54% | 89% | 6% | 4 |
| Wallingford | 1972 | 59% | 73% | 7% | 7 |
| New Haven | 1954 | 78% | 28% | 7% | 8 |
| East Haven | 1967 | 66% | 75% | 6% | 4 |
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.
Since 2006 the National Weather Service has logged hail of 1 inch or larger on 6 separate days within 10 miles of North Haven; the largest was 2 in on July 1, 2012. The most recent was August 26, 2024.
That is fewer than most places in the state on this site (median 9 days).
New Haven County has had 12 federal major-disaster declarations for storms since 2006; the latest was DR-4820, Severe Storm, Flooding, Landslides, and Mudslides (September 2024). (OpenFEMA.)
Storm reports are what observers logged, not a measure of damage to any roof. When wind or hail damage means a new roof.
HUD’s useful-life figures are for planning; a warranty is a separate promise. For North Haven’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; 81% of homes here are detached | Class G or H at 120 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; 10% here predate 1940 | Never a base for a new layer (R908.3.1.1); heavy |
| Flat roof: EPDM or TPO | 15 years | Additions and porch roofs | Where the roof meets a wall or parapet |
Look up the home improvement registration (C.G.S. § 20-420) of anyone pricing a roof in North Haven; the law forbids presenting it as an endorsement of workmanship (§ 20-427(b)(6)).
Contracts, deposits and the right to cancel: checking a roofing contractor. What moves the price: new roof cost in Connecticut.
A permit from North Haven. Replacing the whole roof crosses that line; North Haven’s building department issues the permit.
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 North Haven’s homes were built before 1980, ask what is under the newest layer.
By the Census Bureau’s American Community Survey (2020–2024), the median home in North Haven was built in 1964, 70% of homes were built before 1980, 81% are owner-occupied.
Hail of 1 inch or larger was reported on 6 days within 10 miles of North Haven from 2006 through 2025 (NOAA Storm Prediction Center). A report means hail fell nearby, not that a roof was damaged.
Look up the home improvement registration (C.G.S. § 20-420) of anyone pricing a roof in North Haven; the law forbids presenting it as an endorsement of workmanship (§ 20-427(b)(6)).
The full list: before you call.
Checked October 24, 2026. Laws and code editions change; the date says when these were last read at the source.