
Bay & Picture Windows in Brunswick, Maine
Bay & Picture Windows for Brunswick homes from a family-owned Portland company. An owner measures on site and writes a fixed-price proposal.
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Bay & Picture Windows for Brunswick homes
Brunswick's water views are mostly on the south and west sides of town, where Mere Point, Maquoit Bay and Middle Bay open up toward Casco Bay. A large picture window or a projecting bay on those houses frames the water, but it also faces the prevailing storms, so glass size, frame strength and a tight installation matter more than they would in town. Low-E glass helps with summer glare off the water and with heat loss through a big expanse of glass in January.
Away from the shore, a bay window in a Federal or Greek Revival house downtown or a picture window overlooking the fields toward Durham is often about light rather than view. A projecting bay has its own small roof that collects snow and ice, so it needs proper flashing where it meets the wall and support underneath, whether from brackets or a foundation. On a house in the Village Review Overlay District, adding a bay or enlarging an opening changes the exterior and would need review before work starts. Picture, bay, sliding and awning units can also be combined, with operable windows beside a fixed center pane for ventilation.

How a Window Rough Opening Gets Flashed
- Sill pan — sloped, with dammed ends, so any water that gets past the window drains out, not into the wall
- Window unit — set directly on the sill pan before the sides are fastened
- Jamb flashing tape — laps over the sill pan on both sides, in the order water will travel
- Head flashing — tucks under the weather-resistive barrier above the opening
- Drainage — every layer sheds down and out, never behind the one below it

Brunswick housing at a glance
Census estimates put Brunswick at roughly 9,500 housing units with a median year built of about 1982, so the typical house here is younger than in Portland but the range is wide. Close to one in five units dates from before 1940 and about 31 percent from before 1960, including the houses of the downtown and the Bowdoin neighborhoods. Another 16 percent or so went up between 1960 and 1979, and roughly 27 percent is from 2000 or later. About 71 percent of occupied homes are owner-occupied, and only about half of all units are single-family detached houses, which reflects the apartments, student housing and multi-unit buildings near the college and Maine Street. Seasonal homes are a small share, about 165 units. Expect clapboard Federal, Greek Revival and Colonial Revival houses in the historic districts, and vinyl-clad capes, ranches and colonials farther out.
Brunswick neighborhoods and architecture
Brunswick grew on the river. The Androscoggin falls about 41 feet in three stages here, and the town once had as many as 25 sawmills and, in 1809, Maine's first cotton mill. Bowdoin College, chartered in 1794, anchors the Federal Street Historic District, listed in 1976, with Federal, Greek Revival and Colonial Revival houses, First Parish Church and the Harriet Beecher Stowe House. Pennellville, on Middle Bay Cove, preserves ship captains' houses built between 1794 and 1860. Other neighborhoods include Cooks Corner, Mere Point, Bunganuc Landing and Brunswick Landing, the former Naval Air Station that closed in 2011.
Permits and design review in Brunswick
Building permits in Brunswick go through the Planning and Codes Office at Town Hall, 85 Union Street, on paper or through the online permit portal. Maine's building code moved to the 2021 International Residential Code on April 7, 2025. Much of the historic core lies in the Village Review Overlay District, where the Village Review Board issues a Certificate of Appropriateness for alterations; the town notes that replacing windows, facades and ornamentation with identical styles and materials is not subject to review, and staff can approve minor work not visible from a public way. Waterfront lots within 250 feet of tidal areas also fall under shoreland zoning.
Brunswick at a Glance
What the housing stock and local code enforcement mean for a siding, window, roofing or deck job here.
21,756
Population (ACS estimate)
Median year built: 1982
Mostly vinyl or fiber-cement siding and insulated replacement windows from recent decades.
State Building & Energy Code (MUBEC)
Enforced — population over 4,000
EPA Lead-Safe Rule (pre-1978 homes)
Applies to at least 31% of homes here
Historic District
Exterior work may need design review
Shoreland Zoning
Applies near the water
Permits
Planning & Codes Office, Town of Brunswick Dept. of Planning and Development
Codes & Permits for Bay & Picture Windows in Brunswick
In Brunswick, exterior-work permits come from the Planning & Codes Office, Town of Brunswick Dept. of Planning and Development (85 Union Street, Brunswick, ME 04011, 207-725-6660). With 21,756 residents, over 4,000, Brunswick is required to enforce the Maine Uniform Building and Energy Code (MUBEC). The Federal Street and Pennellville Historic Districts hold National Register status; exterior work visible from the street in these areas draws extra scrutiny.
- A fixed picture window does not itself satisfy IRC R310 egress for a bedroom; if a bay/picture window is installed in a sleeping room, the room still needs a separate code-compliant egress window or door meeting the R310 opening/sill dimensions elsewhere in the room. up.codes
- Bay windows project beyond the wall plane and typically require additional structural support (headers sized per the applicable IRC span tables, and often a knee-wall or bracket support system) beyond what a standard flat-wall window opening needs — sizing should follow the IRC's header/span-table provisions and, for the bay's roof/floor cantilever, engineered or manufacturer-specified support rather than a simple in-wall header swap. up.codes
- The same Climate Zone 6A / U-factor 0.30 fenestration requirement applies to bay and picture window units as to standard replacement windows under Maine's adopted 2021 IECC. up.codes
- Maine's Shoreland Zoning Act creates a regulated shoreland zone extending 250 feet (horizontal distance) from the normal high-water line of any great pond, river, or coastal wetland, and 75 feet from certain streams; the Act's stated purposes include protecting buildings and land from flooding/erosion and controlling water pollution, and it governs deck and other structure setbacks and the expansion of nonconforming structures within that zone (specific setback/expansion rules are set at the municipal-ordinance level under the state's model guidelines). maine.gov
How Cardinal Exteriors Handles Bay & Picture Windows in Brunswick
- Maine's adopted energy code places Brunswick in Climate Zone 6A, capping the U-factor on replacement windows at 0.30 — every unit we quote for a bay and picture windows job here meets that number or beats it.
- With 31% of Brunswick's housing built before 1960, a real share of that stock predates 1978 as well, which means EPA lead-safe containment is part of bay and picture windows on an older Brunswick home more often than not.
- The Federal Street and Pennellville Historic Districts hold National Register status; exterior work visible from the street in these areas draws extra scrutiny. That review is worth confirming with the town before materials are ordered, not after.
- Brunswick's population (21,756) puts it above the threshold where Maine law requires full MUBEC enforcement, so this job is inspected against that code as well as the local permit.
- We file for bay and picture windows permits at the Planning & Codes Office, Town of Brunswick Dept. of Planning and Development before work starts, not after.
A glimpse of one of the 19th-century sea captains' houses along Pennellville Road in Brunswick's Pennellville Historic District.
Street View © Google
What bay and picture windows involves
Picture windows are large fixed units that frame a view and pour light into a room. Bay and bow windows project out from the wall, adding floor space and light from three or more directions. Both are heavier and more exposed than an ordinary window, so the structure, support, roof and flashing around them matter. The Cumberland Center colonial on this site received Andersen 400 Series bay, double-hung and picture windows.
- The opening, header and framing are checked; widening an opening may need a new header.
- Bay and bow units are supported with cables, brackets or a framed seat so they do not sag.
- The small roof over a bay is flashed into the wall and roofed or capped to match the house.
- Insulation goes into the seat and head so the projection is not a cold spot.
- Interior seat boards, casing and exterior trim are finished to match.
Signs it is time
- A view you want to see more of from the main living space
- An old bay that sags, leaks at the roof, or feels cold at the seat
- Fogged glass in a large fixed unit
- A dark room that needs more daylight
What affects the price of bay and picture windows
- Size and configuration: picture, bay or bow, number of units
- Whether the rough opening changes size
- Support method and seat or roof finish
- Glass package and brand
- Interior finish carpentry
Every job is priced from a free on-site visit. Typical ranges for the trade are on our window replacement page, and the details of this service are on the bay and picture windows overview.
For a deeper walkthrough of materials, code details and photos, see our full Bay & Picture Windows: The Structural Support Most Homeowners Never See guide.
More in Brunswick and nearby
Back to the Brunswick exterior services overview, or see every town on our service areas page.
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Get a free bay and picture windows estimate in Brunswick
Tell us about the house and what you want changed. One of the owners will call to set up a visit, measure, and write a fixed-price proposal. No pressure, no obligation.
Need it today?Call Mike (207) 408-5388
or Bob at (207) 252-0759
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