White two-story colonial house with black shutters, a center doorway and a green lawn
York County, Maine

Window and siding replacement in North Berwick

Replacement windows and new siding for homes in North Berwick. Here no siding permit rule is published, and a replacement window has to be U-0.30 or lower.

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What we do in North Berwick

North Berwick at a glance

Permit to re-side
Not published
Window, same opening
Not published
New or bigger opening: not published
Window must meet
U-0.30 or lower
2021 IECC (statewide)
Built before 1980
45%
Homes in North Berwick, Census 2020–2024
People
5,129
Homes
2,238
Size
38.0 square miles
From downtown
About 34 miles southwest
ZIP codes
03906
Founded or incorporated
1831

North Berwick, set off from Berwick in 1831, grew as a mill and railroad town on the Great Works River, where a woolen blanket mill was rebuilt in brick in 1862 after a fire. Bauneg Beg Mountain, 866 feet high, is the town's highest point.

The houses in North Berwick

Before 194024%
1940–19596%
1960–197915%
1980–199925%
2000 or later30%

Of the homes in North Berwick, 45% predate 1980 and 24% predate 1940; the median one dates from 1983. Detached single-family houses make up 85%; owners live in 89% of the occupied ones. A sizable share of homes here date from before 1980, the era the federal lead rule covers (homes built before 1978). What the lead rule requires of a contractor.

Owners here put the median home's value at about $428,500, and 68% of homes have three bedrooms or more — each bedroom needs an emergency escape opening under the egress rule.

Half the homes in North Berwick were built before 1983, which makes its housing about 3 years newer than across York County as a whole (median 1980). Set against York County as a whole, owners live in 89% of occupied homes here against 77% county-wide, the median owner-estimated value is $428,500 here and $395,700 across the county and detached houses are 85% of the homes, above the county's 70%.

Rooms in the median home
6.3
Heated with gas / electricity
0% / 6%
Townhouses and other attached homes
0%
Homes in buildings of 2 to 4 units
6%
Homes in buildings of 5 or more units
6%
Mobile homes
3%

Source: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates (tables B25034, B25035, B25024, B25003, B25077, B25041, B25018 and B25040), read through Census Reporter. These are survey estimates, not a count of every house.

What that vintage turns up

The largest group of homes in North Berwick, 30% of them, was built in 2000 or later, so that is the house described here.

Double-glazed low-e vinyl or fiberglass windows, usually installed with flashing tape over a house wrap. These rarely need replacing for age; when one fails it is usually a seal or a piece of hardware, and the maker's warranty is worth checking before anything else. Heavy frost or water on the inside of the glass in a cold snap is more often a humidity problem in a tight house than a window defect.

Vinyl, fiber cement or engineered wood over oriented strand board and a house wrap, the wall assembly the current code expects. The weak points are workmanship, not materials: tape that let go at the window corners, a missing kickout where a roof edge meets a sidewall, J-channel run tight with no room for the siding to move.

The one to watch on a house of this age

Houses built to recent Maine codes are tight, and Maine now holds new houses to a lower air-leakage limit than the national code. A tight house with too little ventilation fogs its windows all winter; before blaming the glass, check the humidity and the bath and kitchen fans.

And on the 25% built in the 1980s and 1990s

Windows of this era were often sealed to the wrap with caulk and little else. When the siding comes off, check the sheathing below each window's lower corners: that is where a failed caulk joint shows up first, as dark, soft wood.

Neighborhoods

We work across North Berwick Village, Doughty Falls, Five Corners, Varney Crossing, Estes Hill and Bauneg Beg.

Next door

North Berwick shares a boundary with Berwick, South Berwick, Wells, Sanford and Lebanon.

Kitchen window with potted plants on the sill and a snowy yard outside

The rules in North Berwick

Siding replacement Not published

North Berwick's pages do not say whether a re-side or a window replacement needs a building permit. Ask the Building and Code Office before the work starts.

Window replacement, same opening Not published   Enlarging or cutting an opening Not published

Not published. Call the building department before ordering.

Maine sets this, not North Berwick: U-0.30 or lower

With 4,978 residents in the 2020 Census, North Berwick is over the 4,000 mark at which Maine requires a town to enforce the state's building and energy code.

That is the 2021 energy code’s window figure, with no solar heat gain limit.

ENERGY STAR’s own figure here is U-0.22 or lower with an SHGC of 0.17 or higher, stricter than any code edition in force. When the code applies to a replacement window, and when it does not.

Who to call

Building dept
207-676-3353
Official
Matt LeConte, Code Enforcement
Permits
Department page
12345
What is behind the siding: every layer explained
Worker on a lift painting new shingle and lap siding on a house gable
Gothic-style house with carved bargeboard trim, a pointed window and diamond-pane sashes
Yellow clapboard house with black shutters behind a white picket fence
Victorian clapboard house with a mansard roof, bracketed eaves and a columned front porch

How North Berwick compares with its neighbors

PlacePermit to re-sidePermit for a windowWindow must meet
North BerwickNot publishedNot publishedU-0.30
BerwickNoNoU-0.30
South BerwickNoNoU-0.30
WellsYesYesU-0.30
SanfordYesYesU-0.30
LebanonNot publishedNot publishedU-0.30
OgunquitDependsDependsU-0.30

All 29 York County places side by side →

Work we have done in North Berwick

No completed job in North Berwick on the books yet, and we would rather say so than invent one.

Common questions about North Berwick

How old are most houses in North Berwick?
30% went up in 2000 or later and 25% in the 1980s and 1990s; the median North Berwick home dates from 1983, and 45% are older than 1980 (24% older than 1940). ACS 2020–2024.
Is a permit needed to replace siding or windows in North Berwick?
No rule is published. North Berwick's rules say nothing on whether you need a permit to re-side, to replace a window in the same opening or to cut or enlarge an opening. North Berwick's pages do not say whether a re-side or a window replacement needs a building permit. Next door in Berwick, a re-side needs no permit.
What window efficiency rule applies in North Berwick?
Maine sets it statewide, not North Berwick: a U-factor of 0.30 or lower under the 2021 energy code Maine adopted, with no limit on solar heat gain. With 4,978 residents in the 2020 Census, North Berwick is over the 4,000 mark at which Maine requires a town to enforce the state's building and energy code.
What does the egress rule mean for windows in North Berwick?
Yes. 68% of North Berwick's homes have three or more bedrooms (median owner-estimated value $428,500), and each bedroom needs an emergency escape opening: at least 5.7 square feet of net clear opening (5 at a grade-floor sill), 24 inches high and 20 inches wide, with the sill no more than 44 inches above the floor (IRC R310).

Where these facts came from

Sources: townofnorthberwick.org · townofnorthberwick.org · townofnorthberwick.org · townofnorthberwick.org · townofnorthberwick.org · townofnorthberwick.org · townofnorthberwick.org · maine.gov · maine.gov · legislature.maine.gov

Red clapboard cape-style house with a center chimney, shrubs and a sunny lawn
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