
Composite & PVC Decks in Sebago, Maine
Composite & PVC Decks for Sebago homes from a family-owned Portland company. An owner measures on site and writes a fixed-price proposal.
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Composite & PVC Decks for Sebago homes
Composite and PVC decking suits Sebago because so many decks here belong to camps whose owners would rather spend summer on the water than sanding and staining. Capped boards resist the mildew and staining that come with shade and pine needles, and they do not splinter under bare feet coming up from the lake. For owners who arrive in May to find a winter's worth of needles and grime, a wash is all the boards need.
Temperature swings are hard on any deck in a town with long, cold winters. Composite boards move with heat and cold, so gaps and fasteners have to follow the manufacturer's instructions, and hidden fastener systems keep the surface clean. Snow cleared from a composite deck should come off with a plastic shovel to avoid scratching the cap. PVC boards contain no wood fiber, which makes them a good choice for low decks close to damp ground or near the waterline. The framing below is still wood in most builds, so pressure-treated joists with joist tape on top, spacing matched to the board chosen, and footings below frost are what make the deck last.

How a Deck Structure Is Built
- Footing — poured below Maine’s frost line so winter heaving cannot move it
- Post — carries the beam load down to the footing
- Beam — spans between posts and carries the outer ends of the joists
- Ledger — bolted to the house framing, with flashing that diverts water away from the wall
- Joists — span from the ledger to the beam, sized and spaced to the decking and the load
- Decking — the walking surface, fastened on top with spacing for drainage

Sebago housing at a glance
Census estimates count about 1,520 housing units in Sebago, with a median year built of 1975, older than neighboring Naples. About 17 percent predate 1940 and roughly 36 percent predate 1960. Another 19 percent went up between 1960 and 1979, about a quarter between 1980 and 1999, and about 20 percent in 2000 or later. Some 85 percent are single-family detached houses, and about 89 percent of occupied homes are owner-occupied. Nearly 600 units are held for seasonal use. The town's 2006 comprehensive plan found that most homes along Sebago Lake, Peabody Pond and Barker Pond were seasonal while year-round houses sat away from the water, noted a steady conversion of camps to year-round use since 1991, and counted mobile homes at about 13 percent of the stock, mostly on individual lots rather than in parks.
Permits and design review in Sebago
Permits are handled by the Sebago Code Enforcement and Planning office at 406 Bridgton Road on Route 107, where the Code Enforcement Officer also serves as building inspector and is often out on site visits from noon to 3 p.m. The town's permits page lists building permits, shoreland zoning permits and permit-by-rule forms, and states that no permit is needed for roofing or exterior painting. Siding and window work should be confirmed with the office, and a new deck should be expected to need a building permit. Land within 250 feet of Sebago Lake or a great pond falls under shoreland zoning, which has its own permit form.
Weather and exposure in Sebago
Sebago is inland lake and hill country, so salt air is not a factor; snow and cold are. The National Weather Service station in nearby Gray records about 84 inches of snow in a normal year, with roughly 20 inches in each of January and February. Elevation adds to the exposure here: Sebago Center sits about 450 feet above sea level, and homes on the slopes toward Douglas Mountain sit higher still. Along the shore, Sebago Lake freezes over completely only every few winters, so wind has miles of open water to build across before it reaches the west-shore camps, and the lake area is known for sudden weather changes in every season. Wooded lots throughout town keep walls and decks shaded and slow to dry.
Sebago at a Glance
What the housing stock and local code enforcement mean for a siding, window, roofing or deck job here.
2,073
Population (ACS estimate)
Median year built: 1975
A mix of eras — original materials on some houses, postwar replacements on others.
State Building & Energy Code (MUBEC)
Local option — population under 4,000
EPA Lead-Safe Rule (pre-1978 homes)
Applies to at least 36% of homes here
Shoreland Zoning
Applies near the water
Permits
Sebago Code Enforcement & Planning
Codes & Permits for Composite Decks in Sebago
In Sebago, exterior-work permits come from the Sebago Code Enforcement & Planning (406 Bridgton Road (Route 107), Sebago, ME 04029, (207) 787-2457). Sebago 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 (R507.2.2) requires plastic composite deck boards, stair treads, guards, and handrails to comply with ASTM D7032, and (R507.2.2.1) to be labeled with the allowable load and maximum allowable span determined under ASTM D7032 — meaning composite span limits come from the product's own ASTM D7032 listing/manufacturer data rather than the standard wood joist-span tables, and are often shorter, requiring closer joist spacing than an equivalent wood board. up.codes
- Composite decking installation must follow both the code and the manufacturer's instructions (R507.2.2.5), so a given product's specific fastening pattern and joist spacing should be pulled from its ICC-ES evaluation report or manufacturer install guide, not assumed from a generic wood-deck spec. 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 Composite Decks in Sebago
- Maine's adopted deck code (R507.2.4) requires a corrosion-resistant ledger flashing at least 0.019 inch thick, or an approved nonmetallic equivalent — every ledger-attached deck we build in Sebago gets it.
- Footings on a composite and PVC decks job in Sebago are sized to the load and set below the local frost line, per Maine's adopted residential code, not a guess at depth.
- Because Sebago has coastal, lake or river frontage, Maine's Mandatory Shoreland Zoning Act may apply to work close to the water, which can affect setbacks on a rebuild.
- Sebago, at 2,073 residents, sits under the population line where MUBEC enforcement is a state requirement — the town may still choose to enforce it locally, and the permit process applies regardless.
- Anything that needs a permit for composite and PVC decks goes through the Sebago Code Enforcement & Planning.
A wooded road with an old stone wall along Anderson Road in the town of Sebago.
Street View © Google
What composite and PVC decks involves
Composite and PVC decking do not need staining, do not splinter, and resist rot, which is why they have become the default for new decks in Maine. Composite boards blend wood fiber and plastic under a protective cap; PVC boards are all synthetic and lighter. The North Deering farmhouse on this site got a rebuilt deck with AZEK composite decking. The framing underneath is still wood, so it is built to last as long as the boards on top.
- Layout, size and board color are chosen with the owner at the estimate visit.
- Footings and framing are built to code, with joist spacing that suits the board manufacturer's span rules.
- Joist tape or flashing protects the tops of joists and the ledger.
- Boards go down with hidden fasteners or color-matched screws and the expansion gaps the product requires.
- Matching railings, stair treads, fascia and landings finish the deck.
Signs it is time
- You are done staining and sealing a wood deck every year or two
- The deck is in shade or near water where wood stays damp
- You want a deck that stays barefoot-friendly with no splinters
What affects the price of composite and PVC decks
- Composite versus PVC, and the product line
- Deck size, height and shape
- Railing system and stairs
- Hidden-fastener versus face-screw installation
- Footing and framing conditions
Every job is priced from a free on-site visit. Typical ranges for the trade are on our deck building page, and the details of this service are on the composite and PVC decks overview.
For a deeper walkthrough of materials, code details and photos, see our full Composite & PVC Decks: What Changes From Pressure-Treated Lumber guide.
More in Sebago and nearby
Back to the Sebago exterior services overview, or see every town on our service areas page.
Other exterior work in Sebago
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Get a free composite and PVC decks estimate in Sebago
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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