Plymouth has 5,173 homes, and half of them were standing by 1965. Below: what the code asks of a replacement here, the permit, and the town’s own records.
New Roofing Costs connects homeowners with independent local roofing contractors. We do not perform roofing work.
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
A whole new roof is more than that, so it goes to Plymouth’s building official.
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). 64% of Plymouth’s homes were built before 1980; many have been reroofed before.
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. 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: 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
Plymouth’s code design values are a 120 mph ultimate design wind speed and a 35 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. Code edition, permit and contract rules for the whole state: roof replacement in Connecticut.
77% of the occupied homes in Plymouth are lived in by their owners: 3,664 households, the people this line is for. Counting by decade, 23% before 1940, 47% before 1960, 64% before 1980 of the housing was in place, and 12% dates from 2000 on. (ACS 2020–2024.)
The housing is 72% detached houses, 16% buildings of two to four units.
Of the 26 Litchfield County municipalities on this site, Plymouth has the 14th largest share of homes built before 1980: 64%, against a county range of 35% to 79%.
ZIP codes: 06782 · 06786
| Place | Median built | Before 1980 | Owners | Row, twin | Hail days |
|---|---|---|---|---|---|
| Plymouth | 1965 | 64% | 77% | 3% | 12 |
| Thomaston | 1961 | 69% | 78% | 4% | 11 |
| Bristol | 1967 | 69% | 65% | 5% | 13 |
| Watertown | 1969 | 68% | 84% | 5% | 12 |
| Wolcott | 1976 | 54% | 88% | 3% | 9 |
| Harwinton | 1961 | 72% | 93% | 1% | 16 |
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 12 separate days within 10 miles of Plymouth; the largest was 2 in on June 26, 2009. The most recent was June 22, 2024.
That is more hail days than 77% of the places in the state on this site.
At the county level, Plymouth shares Litchfield County’s record of 9 storm disaster declarations since 2006, the newest 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 Plymouth’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; 72% 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 | Low pitches and long runs | A complete standing-seam system may go over the old roof (R908.3.1) |
| Slate | 75 years | Older houses; 23% 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 | Coating is not a replacement |
Connecticut registers home improvement contractors and their salespeople with the Department of Consumer Protection (C.G.S. § 20-420); 24,065 contractor registrations were active in October 2026. Ask for the number of anyone pricing a roof in Plymouth.
Contracts, deposits and the right to cancel: checking a roofing contractor. What moves the price: new roof cost in Connecticut.
The 25 percent line. A whole new roof is more than that, so it goes to Plymouth’s building official.
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). 64% of Plymouth’s homes were built before 1980; many have been reroofed before.
By the Census Bureau’s American Community Survey (2020–2024), the median home in Plymouth was built in 1965, 64% of homes were built before 1980, 77% are owner-occupied.
Hail of 1 inch or larger was reported on 12 days within 10 miles of Plymouth from 2006 through 2025 (NOAA Storm Prediction Center). A report means hail fell nearby, not that a roof was damaged.
Connecticut registers home improvement contractors and their salespeople with the Department of Consumer Protection (C.G.S. § 20-420); 24,065 contractor registrations were active in October 2026. Ask for the number of anyone pricing a roof in Plymouth.
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.