Roof Replacement in Harpswell, Maine

Census estimates count about 4,300 housing units in Harpswell with a median year built around 1979. Roughly one in five units predates 1940, about 29 percent predates 1960, around 22 percent was built between 1960 and 1979, and about 19 percent dates from 2000 or later. More than 91 percent of units are single-family detached houses, and about 83 percent of occupied homes are owner-occupied, both far above most Cumberland County towns. The most distinctive number is seasonal use: around 1,440 units, about a third of the housing stock, are held for seasonal or recreational use. That means cottages and camps that sit closed for months, next to year-round capes, farmhouses and larger newer homes on the water, often clad in cedar shingles or clapboard.

Few towns in Cumberland County are as exposed. Harpswell's land area is about 24 square miles against more than 100 square miles of water, so much of the town sits close to the bay and the wind has a long open run to reach them. Salt spray settles on siding, glass and roof metal, fog keeps surfaces damp for days, and nor'easters push rain sideways into east- and north-facing walls. Snowfall at the Portland Jetport, the closest long-record National Weather Service station, averaged about 69 inches a year over the 1991 to 2020 normals, and wet coastal snow loads roofs and decks quickly. Repeated freeze-thaw cycles still split paint, loosen shingles and heave shallow footings.

The Harpswell Code Enforcement Office requires a building permit to alter, repair, renovate or replace any existing structure. Its permit guide specifically lists decks, even when built off-site, and window and exterior door replacement. The permit must be posted before work starts, review takes about 14 business days, and an accurate plot plan is expected. Structures must stay within the building envelope: in shoreland zones, 75 feet from the highest astronomical tide and 25 feet from boundary lines. Permits run one year, or up to five with a substantial start, and inspections include a final.

A roof replacement strips the old roofing down to the deck, repairs what is underneath, and rebuilds the whole system: underlayment, ice and water protection at the eaves and valleys, flashing at chimneys and walls, ventilation, and the new roofing itself. Maine roofs carry snow for months and see ice dams at the eaves, so the parts you never see do most of the work. The site covers architectural asphalt shingles, metal, cedar shake and flat or low-slope roofing.

• Old roofing is torn off to the deck and hauled away, with the yard and plantings protected.
• Soft or delaminated sheathing is replaced before anything new goes down.
• Ice and water shield goes at the eaves, valleys and penetrations; synthetic underlayment covers the rest.
• Drip edge, step and counter flashing, and pipe boots are installed new.
• Ridge and soffit venting are balanced, then the new roofing is installed and the site cleaned with magnets.

• Curling, cracked, or missing shingles and granules in the gutters
• Ice dams along the eaves or water stains on ceilings after thaws
• Daylight or damp sheathing visible in the attic
• Sagging roof lines or spongy spots underfoot
• A roof at or past the age its material was made for

• Roof area, pitch and complexity: valleys, dormers, skylights, chimneys
• Number of existing layers to remove
• Sheathing repair found after tear-off
• Material: asphalt, metal, cedar or low-slope membrane
• Ventilation and flashing upgrades

Every job is priced from a free on-site visit. Typical ranges for the trade are on our roofing page, and the details of this service are on the roof replacement overview.

For a deeper walkthrough of materials, code details and photos, see our full Roof Replacement in Maine: Ice Dams, Ventilation, and What's Under the Shingles guide.

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