
Bay & Picture Windows in Falmouth, Maine
Bay & Picture Windows for Falmouth 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 Falmouth homes
Big glass earns its place in Falmouth where there is something to look at: Casco Bay from the Foreside, the estuary and Portland skyline seen from Tidewater Farm, Highland Lake from the west side of town, or open fields along the rural roads. A fixed picture window gives the widest unbroken view, and flanking casements or awning units can add fresh air without breaking up the center pane.
A bay or bow window projects from the wall, so its roof and its seat carry loads a flat window never sees. The small roof above it has to shed snow and needs flashing that ties into the main wall, or meltwater will find the gap. Supports underneath must be sized for the unit's weight. On bay-facing walls, the combination of wind and salt argues for clad exteriors and careful sealing, while east and northeast exposures take the hardest storm-driven rain. South and west glass gains winter sun but can overheat a room in summer, so low-E coatings should be chosen by orientation. Because Falmouth requires a permit for replacement windows, a larger or projecting opening is also reviewed for framing and headers.

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

Falmouth housing at a glance
Census estimates for 2020 to 2024 count about 5,300 housing units in Falmouth, with a median year built of 1986. Roughly 14 percent went up before 1940, about 16 percent between 1960 and 1979, about 31 percent in the 1980s and 1990s, and about 27 percent in 2000 or later. Around 84 percent of occupied homes are lived in by their owners, and about 81 percent of all units are single-family detached houses; the town's 2024 comprehensive plan notes that fewer than 10 percent sit in buildings of three or more units. An older layer runs underneath the subdivisions: a 1992 to 1993 survey recorded 985 buildings from before 1945, including farms, schools and summer homes in colonial, Federal, Greek Revival, Italianate and Romanesque styles. About 190 units are held for seasonal use.
Falmouth neighborhoods and architecture
Incorporated in 1718, Falmouth grew from a rural farming community into a summer destination and then a Portland suburb once trolley service reached the Foreside in 1898. The Portland Yacht Club has been in town since 1885, and the Norton House Historic District sits on Foreside Road. Mackworth Island, given to the state by Governor Percival Baxter, keeps the Baxter Summer Home. Gray Road carries Hall's Tavern and the Falmouth House, while Mast Road has the Elisha Purington House. Gilsland Farm, Tidewater Farm and the Town Landing keep open land and shore access among the neighborhoods.
Permits and design review in Falmouth
Permits come from the Community Development Code Enforcement Division at 271 Falmouth Road. The town enforces the Maine Uniform Building and Energy Code, which means the 2021 International Residential, Building, Existing Building and Energy Conservation Codes. Its permit guidance says work that alters or repairs a structure needs a building permit, and it specifically requires one for replacement windows so egress can be checked. Painting and similar finish work is exempt; roofing, siding and decks are not on the exempt list. Shoreland zoning covers land within 250 feet of Casco Bay, the Presumpscot River, Highland Lake and qualifying wetlands, and within 100 feet of designated streams.
Falmouth at a Glance
What the housing stock and local code enforcement mean for a siding, window, roofing or deck job here.
12,444
Population (ACS estimate)
Median year built: 1986
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 26% of homes here
Shoreland Zoning
Applies near the water
Permits
Falmouth Code Enforcement Division
Codes & Permits for Bay & Picture Windows in Falmouth
In Falmouth, exterior-work permits come from the Falmouth Code Enforcement Division (271 Falmouth Road, Falmouth, ME 04105, 207-699-5310). With 12,444 residents, over 4,000, Falmouth is required to enforce the Maine Uniform Building and Energy Code (MUBEC).
- 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 Falmouth
- Maine's adopted energy code places Falmouth 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 26% of Falmouth'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 Falmouth home more often than not.
- Falmouth's population (12,444) 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.
- Anything that needs a permit for bay and picture windows goes through the Falmouth Code Enforcement Division.
An open farm field along Howard's End Drive in Falmouth.
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 Falmouth and nearby
Back to the Falmouth exterior services overview, or see every town on our service areas page.
Other exterior work in Falmouth
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- Deck Replacement in Falmouth
- Siding Replacement in Falmouth
- Vinyl Siding Installation in Falmouth
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- Cedar Siding & Shingles in Falmouth
- Window Replacement in Falmouth
Get a free bay and picture windows estimate in Falmouth
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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