Composite & PVC Decks in Westbrook, Maine

The Census Bureau's 2020-2024 American Community Survey estimates about 9,580 housing units in Westbrook, with a median year built of 1975. The stock splits into two eras. About a quarter of homes were built before 1940 and roughly 37 percent before 1960, while close to a quarter were built in 2000 or later, reflecting the city's recent growth. Only about 44 percent of units are single-family detached houses; the rest are duplexes, apartment buildings, condominiums and other attached housing. Around 61 percent of occupied homes are owner-occupied. The older layer includes the mill housing inside the Cumberland Mills Historic District and wood-frame homes like the 1914 Vallee Family House on Monroe Avenue, a clapboard American Foursquare with a hip roof and full front porch.

Westbrook's Code Enforcement Department at City Hall, 2 York Street, issues building permits. The department publishes a building permit application specifically for basic renovations, alterations, sheds and decks, and enforces the Maine Uniform Building and Energy Code: the 2021 International Residential Code and the 2021 International Existing Building Code. Inspections should be booked 48 to 72 hours ahead, and a permit lapses if work does not start within six months. The city also has a Flood Hazard Permit for work in mapped flood zones, and lots near the Presumpscot River may fall within Maine's mandatory shoreland zone, which covers land within 250 feet of a river.

Westbrook sits a few miles inland from Casco Bay at an elevation of about 105 feet, so it misses most of the direct salt spray that coastal towns deal with but gets the full weight of southern Maine winters. Portland, on the city's eastern border, averages about 69 inches of snow a year, with seasons ranging far above and below that, and nor'easters regularly bring a foot or more with strong wind. Away from the ocean's moderating influence, nights run colder, frost goes deeper and freeze-thaw cycles work hard on roofs, flashing and deck footings. The city's own code office sets foundations at four feet below grade for frost protection, a useful benchmark for any new footing.

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.

• 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

• 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.

Back to the Westbrook exterior services overview, or see every town on our service areas page.