Roof replacement, leak repair and storm damage for homes in Bath. In Bath, the 2021 IRC is in force and 57% of the 4,796 homes went up before 1940. It starts with a free inspection that photographs every slope.
Bath runs to about 9.1 square miles and roughly 8,815 people. It sits about 28 miles northeast of downtown Portland. The community dates back to 1781. We cover ZIP code 04530.
Inside Bath's Historic Overlay District, altering or covering exterior architectural details needs Historic District Review before a building permit. Repairing a roof surface without changing its location, design, dimensions or materials counts as ordinary maintenance and needs no review. The city's code asks for original roofing materials to be kept or repaired where possible, and replaced with the same material, or a substitute of the same color, shape, size and texture.
No completed roof in Bath is logged in our job records yet.
The South End is the older residential area with early 1800s houses, the North End holds the densest mix of 19th-century homes built by prospering shipbuilders, many Greek Revival and Italianate, and Washington Park was built as housing for shipyard workers during World War I.
We work across Bath rather than one corner of it — Downtown, North End, South End and Washington Park included. Age and construction change between them, which is why we look before we quote.
Bath is a small city on the west bank of the Kennebec River, about 12 miles up from the open ocean, known as the City of Ships; it became a town in 1781 and a city in 1847. Shipbuilding began here in 1743, Bath Iron Works has built hundreds of ships, mostly for the Navy, and many of the older neighborhoods were built during the shipbuilding boom. The older core is a National Register district, and a city historic overlay zone reviews some exterior changes there.
On houses this old in Bath the deck is usually solid boards, not plywood, and boards shift: gaps open, nails work loose, and a shingle nailed over a gap holds on to nothing. Chimneys and wall joints often still carry their original step and counter-flashing, which is where many leaks really start while the shingles look fine. Two or three roofs piled on one another are common on streets like these; every extra layer hides the deck, adds weight and voids most manufacturer warranties. Any original slate or tile on the house calls for a different plan from an asphalt tear-off.
The Census Bureau counts 4,796 homes in Bath, with a median year built of 1939 or earlier, the oldest band the survey reports. 2,756 of them (57%) went up before 1940 — the 1st-highest pre-1940 share of the 64 places on this site — and 388 (8%) in 2000 or later. More of today's homes date from before 1940 than from any decade since. That is above Sagadahoc County's 27%.
The rule of thumb in the Maine Bureau of Insurance's claims guide is a useful life of usually about 25 years for a roof. On that yardstick the 4,408 homes in Bath built before 2000 (92%) have outlived at least one roof; 3,491 of them (73%) predate 1970, old enough for two replacements already. First replacements are arriving on the 69 homes built in the 2000s, while the 319 built since 2010 are mostly still on the roof they were built with. On houses that old, the question worth asking is how many layers are up there: a roof laid over an old one hides the deck.
Detached single-family houses make up 60% (2,865); attached houses and townhouses 4% (173). 1,358 homes (28%) sit in two- to nine-unit buildings and 386 (8%) in buildings of ten units or more, whose roofs are normally an owner's or a board's call rather than a resident's. Owners live in 64% of the 4,335 occupied homes. Read together, those figures point toward full tear-offs on houses past two roof lives, deck and flashing checks on pre-war board sheathing and flat and low-slope sections, which turn up more on attached and multi-unit buildings.
| Built | Homes | Share | |
|---|---|---|---|
| Before 1940 | 2,756 | 57% | |
| 1940s | 250 | 5% | |
| 1950s | 181 | 4% | |
| 1960s | 304 | 6% | |
| 1970s | 308 | 6% | |
| 1980s | 342 | 7% | |
| 1990s | 267 | 6% | |
| 2000s | 69 | 1% | |
| 2010s | 265 | 6% | |
| 2020 or later | 54 | 1% |
Census ACS 2020–2024, tables B25034, B25035, B25024 and B25003: 4,796 homes, 4,335 occupied. Survey estimates.
NOAA’s Storm Prediction Center logged no reports of hail 1 inch or larger within 5 miles of Bath’s center from 2016 through 2025. That is a gap in the reports rather than proof that no hail fell: reports come from spotters and the public.
Bath's Land Use Code (adopted September 2, 2026) says a building, structure or part of one may not be constructed, structurally altered, enlarged, moved or demolished until the Code Enforcement Officer issues a building permit. Neither the code nor the city's permit pages mention re-roofing by name; roof work that structurally alters the building falls under that rule. Permits taken out after work has begun cost five times the normal fee.
Bath enforces the 2021 IRC. Bath is subject to the Maine Uniform Building and Energy Code (MUBEC). The city's Permit Requirements and Conditions sheet (September 2026) cites the 2021 International Residential Code (sections R105, R314 and R315) and the 2021 International Building Code (Chapter 17), which matches the state's 2021 code update effective April 7, 2025.
The published number is 207-443-8334. The building official on record is Adam Jones, Code Enforcement Officer. The department page is here.
Design wind here is set by location, not one figure for the whole area: across greater Portland and southern Maine the published ultimate design wind speeds run 115–120 mph, depending on where a house stands. The building department for Bath can tell you which figure applies. Ground snow load is set for each address, not one figure for the whole area: the published figures here run 50–70 psf. What it does to a roof is in the roofing code guide.
Bath borders Woolwich, Arrowsic, West Bath, Phippsburg, Brunswick and Kennebec River. Our pages for them:
Also in Sagadahoc County:
| Town | Re-roof permit | Code | Median built |
|---|---|---|---|
| Bath | Not published | 2021 IRC | 1939 or earlier |
| Woolwich | Not published | Enforcement optional | 1982 |
| Arrowsic | Not published | Enforcement optional | 1985 |
| West Bath | Not published | Enforcement optional | 1983 |
| Phippsburg | Yes | 2021 IRC | 1984 |
| Brunswick | No | 2021 IRC | 1982 |
| Bowdoin | Not published | Enforcement optional | 1992 |
All 10 Sagadahoc County towns side by side →
Bath's Land Use Code (adopted September 2, 2026) says a building, structure or part of one may not be constructed, structurally altered, enlarged, moved or demolished until the Code Enforcement Officer issues a building permit. Neither the code nor the city's permit pages mention re-roofing by name; roof work that structurally alters the building falls under that rule. Permits taken out after work has begun cost five times the normal fee.
Bath enforces the 2021 IRC. Bath is subject to the Maine Uniform Building and Energy Code (MUBEC). The city's Permit Requirements and Conditions sheet (September 2026) cites the 2021 International Residential Code (sections R105, R314 and R315) and the 2021 International Building Code (Chapter 17), which matches the state's 2021 code update effective April 7, 2025.
Median year built 1939 or earlier, by the Census Bureau's 2020–2024 estimates. Of 4,796 homes, 4,408 were built before 2000 and 2,756 before 1940, so most roofs in Bath are not the first one the house has had.
The building official on record is Adam Jones, Code Enforcement Officer. The department's own number is on this page, beside its name.
It can. Bath has Bath Historic District, Trufant Historic District, Washington Park Historic District and Historic Overlay District (local). Inside a designated district, changing a visible roof material or color can need preservation review before the permit is issued. Like-for-like replacement usually raises fewer questions, but we check before quoting.
Not yet: no completed roof in Bath is in our job records, so this page shows no job count.
Researched 2026-10-24; housing, Census ACS 2020–2024; hail, NOAA SPC. Sources: www.cityofbathmaine.gov · www.cityofbathmaine.gov · www.cityofbathmaine.gov · www.cityofbathmaine.gov · www.cityofbathmaine.gov · www.cityofbathmaine.gov · www.cityofbathmaine.gov · www.cityofbathmaine.gov · www.cityofbathmaine.gov · www.cityofbathmaine.gov · en.wikipedia.org · en.wikipedia.org · en.wikipedia.org · en.wikipedia.org · npgallery.nps.gov · www.maine.gov · www.pressherald.com · www.cityofbathmaine.gov · www.zip-codes.com · en.wikipedia.org · en.wikipedia.org · en.wikipedia.org · en.wikipedia.org · en.wikipedia.org · www.maine.gov · data.census.gov · www.spc.noaa.gov. Rules and staff change; check with the jurisdiction.
