Composite & PVC Decks in Topsham, Maine

Census estimates put Topsham's median home built around 1980, with about 12 percent of the housing predating 1940 and roughly 26 percent predating 1960. The town's oldest houses cluster along the Androscoggin River near downtown and in the Pejepscot village area, where mill-era homes date back to the 1800s. Away from the river, Topsham's housing spreads into a much larger share of capes, colonials and contemporary homes built from the 1970s onward, as the town grew alongside Brunswick and the Route 196 commercial corridor into a broader mid-coast residential center.

Building permits in Topsham go through the Code Enforcement Office, a Division of Planning at Town Hall on Main Street, covering siding, roofing, window and deck work. Topsham maintains its own Historic District and Commission, separate from Code Enforcement, and any exterior work inside the town's local historic district near downtown needs that commission's review before work starts. Properties along the Androscoggin, Cathance, Little or Muddy Rivers, or near Merrymeeting Bay, fall under Maine's Mandatory Shoreland Zoning Act, which can affect how close to the water new construction or rebuilding may sit.

The Androscoggin River, the Cathance, Little and Muddy Rivers, and Merrymeeting Bay give Topsham a lot of river and tidal frontage for an inland town, and low-lying areas near that water see higher humidity and occasional flood exposure that a house further up the hill doesn't face. Winters bring the usual Maine freeze-thaw cycling and snow load, and older, less-insulated homes near downtown and Pejepscot are prone to ice damming at the eaves in a hard winter. Topsham's location, a few miles from the open coast, means less direct salt-air exposure than towns like Bath or Harpswell, though wind off Merrymeeting Bay still matters for riverside properties.

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 Topsham exterior services overview, or see every town on our service areas page.