Asphalt Shingle Roofing in Scarborough, Maine

Architectural asphalt shingles are the practical choice for most of Scarborough's post-1980 houses, where a straightforward gable or hip roof is due for replacement and cost matters. Laminated shingles are thicker than old three-tab products, cast a deeper shadow line and carry higher wind ratings when installed with the manufacturer's high-wind nailing pattern. That pattern, plus starter strips at eaves and rakes, is what keeps shingles down during a coastal nor'easter.

Maine enforces the 2021 International Residential Code, which requires an ice barrier underlayment where ice damming is likely, running from the eave edge to at least 24 inches inside the exterior wall line and at least 36 inches up the slope on roofs steeper than 8 in 12. In Scarborough's snow, that membrane is what keeps meltwater from backing up under the shingles and into ceilings when an ice dam forms. Valleys, chimneys and skylights get membrane too, and new drip edge protects the fascia. Color is not only taste: darker shingles shed snow sooner on a sunny day, while lighter ones keep attics cooler in summer. The fixed-price written proposal lists the shingle line, underlayment and ventilation.

Census estimates for 2020 to 2024 put Scarborough at about 11,100 housing units with a median year built of 1988, a young housing stock for a town settled in 1635. About 30 percent of homes date from 2000 or later and roughly another 31 percent from the 1980s and 1990s, so a large share of houses are reaching the age when original roofs, builder-grade windows and first-generation siding come due together. About 24 percent went up between 1960 and 1979. The older layer is thinner but distinctive: about 16 percent of homes predate 1960 and about 8 percent predate 1940, including the summer cottages of Prouts Neck, many of which have changed little in more than a century. Roughly 69 percent of homes are single-family detached, about 77 percent of occupied homes are owner-occupied, and some 850 units are held for seasonal use.

Scarborough faces Saco Bay and the open Gulf of Maine, and much of the town sits close to sea level, with an average elevation of about 20 feet and a high point of roughly 215 feet on Beech Ridge. Houses at Prouts Neck, Pine Point and Higgins Beach take wind and salt spray straight off the water, and winter nor'easters bring high winds, driving rain and snowfalls that often top a foot. The Portland International Jetport, a few miles away, averages close to 69 inches of snow a year, though totals swing widely from one winter to the next. Homes along the marsh sit on low, open ground where wind crosses the flats. Everywhere, repeated freezing and thawing works water into joints, sills and shingle edges.

Building permits in Scarborough go through the Code Enforcement division of the Planning and Codes Department, which applies the 2021 Maine Uniform Building and Energy Code and its residential code. The town's code FAQ says anyone who intends to construct, alter or repair a building must first obtain the required permit, so new decks and deck replacements are permitted before work starts; ask the office about roofing, siding and windows. Lots near the shore, marsh or rivers fall under Shoreland Zoning Ordinance 405C, and any development in a FEMA Special Flood Hazard Area needs a flood hazard permit, a condition of the town's membership in the National Flood Insurance Program.

Architectural (dimensional) asphalt shingles are the most common roof in Maine for good reason: they are affordable, they come in many colors and textures, and a good system handles snow, ice and wind well. Several projects on this site used CertainTeed Landmark shingles. What separates a long-lived shingle roof from a short-lived one is mostly underneath: ice and water protection at the eaves, correct nailing, and balanced ventilation.

• Tear-off to the deck and sheathing repair where needed.
• Ice and water shield at eaves, valleys and around penetrations; underlayment over the rest.
• Starter strip and drip edge at the edges, then shingles nailed in the manufacturer's nail zone.
• Step flashing at walls, new pipe boots, and chimney flashing as needed.
• Hip and ridge caps over a ridge vent, balanced with intake at the soffits.

• Granules washing into the gutters and bald patches on the shingles
• Shingles that curl, cup, or lift in wind
• Leaks around chimneys, vents or skylights
• Moss or dark streaking on shaded slopes

• Roof area and pitch
• Shingle line and color
• Layers to tear off and deck repairs
• Flashing and ventilation work
• Number of valleys, dormers and penetrations

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 architectural asphalt shingle roofing overview.

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