Roofing for Topsham homes: replacement, leaks and storm damage. In Topsham, the 2021 IRC is in force and the median home was built in 1980. Any permit the job needs is ours to pull.
Topsham runs to about 32.2 square miles and roughly 9,706 people. It sits about 26 miles northeast of downtown Portland. The community dates back to 1764. We cover ZIP code 04086.
Topsham's re-roof inspection checklist, written to the 2021 code with Maine's changes, says every old layer must come off first when the existing roof is water-soaked or badly degraded, is wood shake, slate, clay or cement tile, or already has two or more layers. Flashings are rebuilt to the maker's instructions, asphalt shingles need at least a 2:12 slope, with double underlayment from 2:12 up to 4:12, and attics need cross ventilation. In the town's Historic District, work visible from the street needs a Certificate of Appropriateness from the Historic District Commission; paint color is not reviewed.
No completed roof in Topsham is logged in our job records yet.
The village holds Federal-style houses from the early 1800s along Main, Green, Pleasant, Winter and Elm streets, with later Greek Revival houses, Queen Anne houses on Summer Street, and Italianate porches and bay windows added to older homes.
We work across Topsham rather than one corner of it — Topsham Village, Pejepscot Village, Topsham Heights, Topsham Foreside and Pleasant Point included. Age and construction change between them, which is why we look before we quote.
Topsham sits on the Androscoggin River across from Brunswick, where the river runs into Merrymeeting Bay. Its village grew around sawmills, paper mills and early shipbuilding, and mill workers settled in Pejepscot Village and Topsham Heights.
From this stretch of building, houses in Topsham sit on plywood or OSB, were first roofed in three-tab shingles, and are mostly on their second roof now. Trouble tends to be at the penetrations rather than across the field: the rubber collar on a pipe boot splits years before the shingles give out, and it is the leak we trace most often. Ridge vents were hit and miss in these decades, and OSB that stays damp for a season softens in a way plywood does not, something you feel underfoot rather than see from the yard.
By the Census Bureau's estimate there are 4,313 homes in Topsham, with a median year built of 1980. 536 of them (12%) went up before 1940 — 49th of 64 places on this site for pre-1940 share — and 1,048 (24%) in 2000 or later. The 2000s were the busiest decade, adding 696 of today's homes (16%). (Sagadahoc County as a whole: 27% before 1940.)
About 25 years is the usual useful life of a roof, by the figure in the Maine Bureau of Insurance's claims guide. That puts 3,265 homes in Topsham, the 76% built before 2000, past at least one full roof life; 1,597 of them (37%) predate 1970, old enough for two replacements already. First replacements are arriving on the 696 homes built in the 2000s, while the 352 built since 2010 are mostly still on the roof they were built with. At that age it pays to know whether the last roof was torn off or laid over the one before it, because a second layer hides the deck.
By building type: 3,192 detached houses (74%), 139 attached (3%). 482 homes (11%) sit in two- to nine-unit buildings and 208 (5%) in buildings of ten units or more, where the roof is usually a landlord's or an association's decision. The count also takes in 292 mobile homes, which are a different kind of roof job. 3,163 of 4,011 occupied homes (79%) are lived in by their owners. Read together, those figures point toward first replacements on 2000s builder-grade shingles.
| Built | Homes | Share | |
|---|---|---|---|
| Before 1940 | 536 | 12% | |
| 1940s | 199 | 5% | |
| 1950s | 363 | 8% | |
| 1960s | 499 | 12% | |
| 1970s | 577 | 13% | |
| 1980s | 664 | 15% | |
| 1990s | 427 | 10% | |
| 2000s | 696 | 16% | |
| 2010s | 329 | 8% | |
| 2020 or later | 23 | 1% |
Census ACS 2020–2024, tables B25034, B25035, B25024 and B25003: 4,313 homes, 4,011 occupied. Survey estimates.
NOAA’s Storm Prediction Center logged no reports of hail 1 inch or larger within 5 miles of Topsham’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.
Topsham's General Building Permit application lists exceptions that do not need a building permit, including repairs to and maintenance of existing buildings, replacement of non-structural elements, and decorative changes. The town's Building Permit Required sheet quotes Zoning Ordinance section 225-61: repairs, replacement and normal maintenance not requiring structural elements do not need a building permit, as long as they meet other laws and need no other permit. Roof work that involves structural elements (rafters, trusses, sheathing) needs a permit, and the town's re-roof inspection checklist calls for a pre-inspection of rafter and truss sizes and spans when a new roof adds load.
Topsham enforces the 2021 IRC. That is the Maine Uniform Building and Energy Code (MUBEC); the town's residential permit packet says projects are regulated by MUBEC Chapter 5, currently the 2021 International Residential Code as amended, and the code enforcement page says the 2021 I-codes took effect April 7, 2025.
The published number is 207-729-0908. The building official on record is Tom Lister, Code Enforcement Officer. The department page is here.
Wind design changes with location across greater Portland and southern Maine: the published ultimate design wind speeds run 115–120 mph, and the building department can say which figure applies to a given address. Ground snow load is set for each address, not one figure for the whole area: the published figures here run 50–70 psf. See the roofing code guide for what it governs.
Topsham borders Brunswick, Bowdoin, Bowdoinham, Durham, Lisbon and Androscoggin River. Our pages for them:
Also in Sagadahoc County:
| Town | Re-roof permit | Code | Median built |
|---|---|---|---|
| Topsham | Conditional | 2021 IRC | 1980 |
| Brunswick | No | 2021 IRC | 1982 |
| Bowdoin | Not published | Enforcement optional | 1992 |
| Bowdoinham | No | Enforcement optional | 1985 |
| Arrowsic | Not published | Enforcement optional | 1985 |
| Bath | Not published | 2021 IRC | 1939 or earlier |
| Georgetown | Conditional | Enforcement optional | 1980 |
All 10 Sagadahoc County towns side by side →
Topsham's General Building Permit application lists exceptions that do not need a building permit, including repairs to and maintenance of existing buildings, replacement of non-structural elements, and decorative changes. The town's Building Permit Required sheet quotes Zoning Ordinance section 225-61: repairs, replacement and normal maintenance not requiring structural elements do not need a building permit, as long as they meet other laws and need no other permit. Roof work that involves structural elements (rafters, trusses, sheathing) needs a permit, and the town's re-roof inspection checklist calls for a pre-inspection of rafter and truss sizes and spans when a new roof adds load.
Topsham enforces the 2021 IRC. That is the Maine Uniform Building and Energy Code (MUBEC); the town's residential permit packet says projects are regulated by MUBEC Chapter 5, currently the 2021 International Residential Code as amended, and the code enforcement page says the 2021 I-codes took effect April 7, 2025.
The Census Bureau's 2020–2024 estimates put the median year built at 1980: 12% of Topsham's 4,313 homes predate 1940 and 24% were built in 2000 or later. At the usual 25-year roof life, 76% have needed at least one new roof already.
The building official on record is Tom Lister, Code Enforcement Officer. The department's own number is on this page, beside its name.
It can. Topsham has Topsham Historic District. 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 Topsham 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.topshammaine.com · www.topshammaine.com · www.topshammaine.com · www.topshammaine.com · www.topshammaine.com · www.topshammaine.com · www.topshammaine.com · www.topshammaine.com · www.topshammaine.com · www.topshammaine.com · www.topshammaine.com · www.topshammaine.com · en.wikipedia.org · en.wikipedia.org · www.topshammaine.com · www.topshammaine.com · topshamlibrary.org · www.pressherald.com · www.zip-codes.com · www.zip-codes.com · en.wikipedia.org · data.census.gov · www.spc.noaa.gov. Rules and staff change; check with the jurisdiction.
