
Cedar Siding & Shingles in Long Island, Maine
Cedar Siding & Shingles for Long Island homes from a family-owned Portland company. An owner measures on site and writes a fixed-price proposal.
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Cedar Siding & Shingles for Long Island homes
Cedar shingles and cedar clapboard are traditional walls for a Casco Bay summer cottage, and plenty of Long Island's older houses were built in that tradition. Owners restoring a rusticator-era cottage or adding on to one often want cedar to keep it consistent. It is light to ship, easy to cut and fit around old, out-of-square framing, and forgiving on walls that were never built straight to begin with. Matching the exposure of the existing courses also lets an addition blend into the original house.
The island's exposure is what shortens cedar's life. South and west faces dry out in sun and wind while north walls stay damp and grow moss, and salt spray stains and corrodes common fasteners. Stainless nails, a drainage gap or rainscreen behind the shingles, and back-primed or factory-finished material all help the wall last longer. Many owners let cedar weather naturally to silver-gray, which requires the least upkeep; painted or stained cedar looks sharper but needs recoating on a schedule, which is hard to keep up on a seasonal house when finding help on the island can take a long time.

How a Siding Wall Assembly Works
- Sheathing — the structural wall surface everything else attaches to
- Weather-resistive barrier — a wrapped membrane that stops bulk water while letting vapor escape
- Rainscreen gap — a drainage and drying space between the barrier and the siding
- Siding — the visible cladding, fastened over the furring strips
- Window flashing — tucked under the barrier above and lapped over the siding below, so water never gets behind it

Long Island housing at a glance
Census estimates count about 423 housing units, and the median year built is 1938. About 66 percent of units predate 1940, and about 68 percent predate 1960. Almost nothing was built between 1960 and 1979, only around 3 percent, and about 15 percent went up in 2000 or later. Roughly 95 percent of units are single-family detached houses, and about 88 percent of year-round households own their home. Seasonal use dominates: about 307 units, nearly three-quarters of the stock, are held for seasonal or occasional use. The town's comprehensive plan counts about 50 homes converted from year-round to summer-only use over a recent 25-year stretch and describes many summer houses as unheated or poorly heated. Many trace back to the summer-cottage boom of the 1890s and 1900s.
Weather and exposure in Long Island
Long Island lies about six miles out from Portland along Hussey Sound, a main passage into the inner bay. Wind reaches it from every direction, and the town's comprehensive plan notes that the first settlers built on the south side of the island to shelter from northerly winter winds. Portland International Jetport, the nearest long-term station, averages about 69 inches of snow a season under the 1991 to 2020 normals. A January 2022 winter storm badly damaged the wave break, floats and pilings at Mariner's Wharf, and the plan lists sea level rise, stronger storms and upkeep of the island's bluffs among the town's concerns.
Permits and design review in Long Island
The Code Enforcement Officer meets by appointment through the Town Clerk. The town's building permit application covers new structures, additions, alterations, replacements and repairs, and it must include a scaled site plan and proof that a construction debris container has been delivered to be barged off the island. Every job gets at least three inspections: foundation, framing and final. Height is capped at 35 feet, and several zones limit structures to 15 percent of the lot. In the shoreland zone, new structures sit at least 75 feet from the upland edge of a coastal wetland, and the permit form warns that shoreland work may also need a Maine DEP permit.
Long Island at a Glance
What the housing stock and local code enforcement mean for a siding, window, roofing or deck job here.
249
Population (ACS estimate)
Median year built: 1938
Original wood clapboard or shingle siding, wood-sash windows and multi-layered roofs are common here.
State Building & Energy Code (MUBEC)
Local option — population under 4,000
EPA Lead-Safe Rule (pre-1978 homes)
Applies to at least 68% of homes here
Shoreland Zoning
Applies, plus island delivery logistics
Permits
Town of Long Island Code Enforcement Officer (CEO business handled by appointment; contact via Town Clerk)
Codes & Permits for Cedar Siding in Long Island
In Long Island, exterior-work permits come from the Town of Long Island Code Enforcement Officer (CEO business handled by appointment; contact via Town Clerk). Long Island sits at or under the 4,000-resident line where MUBEC enforcement is a local option rather than a state mandate.
- Maine's adopted 2021 IRC (R703.5) covers wood siding: a water-resistive barrier is required per R703.2, fasteners must penetrate a minimum of 1.5 inches into studs or blocking (R703.3.4), and horizontal lap siding needs a minimum 1-inch overlap (0.5 inch if rabbeted) per R703.5.3. up.codes
- Beyond the code minimums, a vented rainscreen gap behind wood/cedar siding is common installation practice in Maine's cold, wet coastal climate to let cladding dry and reduce moisture-driven rot — this is standard trade practice referenced in building-science guidance, not itself a numbered MUBEC/IRC mandate, so it should be described to clients as a recommended practice rather than a code requirement. 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
- By Maine law (25 M.R.S. §2373), 'the code must be enforced in a municipality that has more than 4,000 residents' (per the most recent federal census); municipalities at or below that population are not required to adopt/enforce MUBEC but may opt in locally, per the state's own program page: 'All municipalities with a population greater than 4,000 are required, by statute, to enforce the MUBEC. Municipalities with a population under 4,000 may choose to enforce the MUBEC.' mainelegislature.org
How Cardinal Exteriors Handles Cedar Siding in Long Island
- With 249 residents, Long Island falls below the threshold for mandatory statewide code enforcement, but that doesn't change the permit and inspection Cardinal builds to on every job here.
- With 68% of Long Island's housing built before 1960, a real share of that stock predates 1978 as well, which means EPA lead-safe containment is part of cedar siding and shingles on an older Long Island home more often than not.
- Materials and debris containers travel by private barge, plus the Casco Bay Lines passenger ferry from Portland. That logistics window shapes when we can start and finish the job.
- Anything that needs a permit for cedar siding and shingles goes through the Town of Long Island Code Enforcement Officer (CEO business handled by appointment; contact via Town Clerk).
The Casco Bay Lines ferry terminal on Commercial Street in Portland — the mainland gateway used to reach Long Island, which has no Google Street View car coverage of its own.
Street View © Google
What cedar siding and shingles involves
Cedar clapboards and shingles are the original New England exterior, and for shingle-style cottages, capes and historic homes nothing else looks quite right. Cedar is naturally rot-resistant and light, but it is wood: it needs airflow behind it and a finish that suits the exposure. Pre-finished shingles, such as the Maibec shingles on several projects shown on this site, arrive stained or primed on all sides, which cuts the upkeep and evens out the color.
- Walls are stripped, repaired and wrapped; where it helps drying, a ventilated or drainage layer goes behind the cedar.
- Shingles are coursed and laid out so exposure lines up at windows, doors and corners.
- Stainless or hot-dipped galvanized fasteners are used so they do not stain or corrode.
- Corners are woven or finished with boards, and trim is detailed to shed water.
- Pre-finished product is touched up at cuts; natural cedar is left to weather or finished as you choose.
Signs it is time
- The house is a cape, shingle-style cottage or historic home where cedar belongs
- Existing shingles are cupped, split, missing or black with mildew
- A historic district or your own taste calls for real wood
- You want a natural finish that weathers to silver-gray
What affects the price of cedar siding and shingles
- Clapboard versus shingle, and grade of cedar
- Pre-finished versus natural or site-finished
- Coursing detail, corner treatment and trim
- Wall area, height and tear-off
- Any rainscreen or drainage layer behind the siding
Every job is priced from a free on-site visit. Typical ranges for the trade are on our siding page, and the details of this service are on the cedar siding and shingles overview.
For a deeper walkthrough of materials, code details and photos, see our full Cedar Siding & Shingles: A Traditional Maine Look That Needs the Right Prep Underneath guide.
More in Long Island and nearby
Back to the Long Island exterior services overview, or see every town on our service areas page.
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Get a free cedar siding and shingles estimate in Long Island
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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