Vinyl Siding Installation in South Portland, Maine

With a median home built in 1968, South Portland has a large stock of ranches, split-levels, capes and later subdivision houses where vinyl is a natural fit. Premium vinyl with a heavier panel resists the brittleness that sets in during cold snaps, and insulated panels can add some stiffness and a bit of thermal resistance on houses built before modern insulation standards. Many of these homes already have vinyl from a first round of re-siding, now faded and loose.

Exposure should guide the product choice. A house on the Casco Bay side, near Willard Beach or Spring Point, takes stronger onshore wind than one in the western neighborhoods near the Maine Mall, so a panel with a higher wind rating and proper nailing matters more there. On the city's older houses, vinyl is still possible, but pay attention to trim widths, corner boards and window casings so the house keeps its proportions, and remember that houses built in 1940 or earlier may face the city's review delay on exterior permits. Whatever the age, rotted sheathing and missing flashing get fixed before new vinyl covers them.

South Portland has about 12,800 housing units, and the American Community Survey estimates a median year built of 1968, two decades newer than Portland across the harbor. About 25 percent of homes predate 1940 and about 45 percent predate 1960. Roughly 16 percent went up between 1960 and 1979, and close to 19 percent date from 2000 or later, a larger share of newer construction than on the peninsula. Owners occupy about 58 percent of occupied homes, and single-family detached houses make up a little over half the stock, with apartments, condominiums and two-family houses filling out the rest. Seasonal homes are rare, only about 100 units. The older waterfront villages hold the city's early wood-frame houses, while the neighborhoods farther inland are largely post-war and later.

South Portland faces Portland Harbor and the Fore River on its north side and Casco Bay to the east, so houses in Ferry Village, Willard and the streets near Spring Point take salt air and onshore wind, while western neighborhoods near the Maine Mall are more sheltered. The city shares its weather with the Portland International Jetport, whose main runway lies inside South Portland, and the Portland area averages about 69 inches of snow a year, with some winters far lighter or heavier. Nor'easters drive rain and snow sideways against exposed walls, and repeated freeze and thaw loosens caulk, paint and shingles. Near the water, salt speeds corrosion of flashing and fasteners.

Building permits in South Portland come from Code Enforcement, part of the Department of Planning and Development, which issues permits and conducts inspections for building, electrical and plumbing work. Applications can go through the city's online portal or by email. The city enforces the Maine Uniform Building and Energy Code, based on the 2021 International Residential Code, and a permitted project must make a substantial start within 180 days. Since 2019, a building permit for exterior work on a designated historic property or any structure built in 1940 or earlier may be delayed up to 90 days. Shoreland zoning applies along the harbor and bay.

Premium vinyl siding is the fastest way to a tight, low-maintenance exterior. Today's thicker panels come in clapboard, Dutch lap, board-and-batten and shake profiles and in colors that were not possible a generation ago. The projects shown on this site include CertainTeed Monogram vinyl siding, used to replace rotting wood clapboards and 1970s metal siding on Portland homes. Vinyl moves with temperature, so how it is hung matters as much as which panel you pick.

• Old siding is removed and the wall is checked for soft sheathing and past leaks.
• House wrap and flashing go on first, with extra care around windows, doors and roof-to-wall joints.
• Starter strip, J-channel and corner posts are set straight and level so every course lines up.
• Panels are nailed in the center of the slots and left loose enough to expand and contract through a Maine winter and summer.
• Trim is wrapped or replaced with low-maintenance millwork so there is nothing left to paint.

• You are tired of repainting wood clapboards every few years
• The existing vinyl is faded, cracked, or loose after wind storms
• The budget needs a whole-house result rather than one premium wall
• You want an insulated panel to take the edge off drafty walls

• Panel grade and thickness, and whether it is insulated
• Profile: clapboard, Dutch lap, board-and-batten or shake
• Amount of trim, soffit and fascia wrapped or replaced
• Tear-off and sheathing repairs
• House height and access

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 vinyl siding installation overview.

Back to the South Portland exterior services overview, or see every town on our Cumberland County service areas page.