Window Replacement in Biddeford, Maine

Biddeford's median home dates to about 1952, with roughly 41 percent of the housing stock built before 1940 and 56 percent before 1960, among the oldest profiles of any town in this service area. That reflects the mill era: dense triple-deckers, duplexes and worker cottages fill the neighborhoods around the old Pepperell and Lincoln Mills downtown, many with original wood clapboard, early asbestos-cement shingle, or an aging vinyl overlay from a past renovation. Outside the mill district, West Biddeford and the areas toward Route 1 hold newer capes, ranches and colonials built through the second half of the 20th century, and Biddeford Pool adds a smaller cluster of coastal cottages and shingle-style summer homes.

Biddeford grew up around its falls on the Saco River, where the Pepperell and Lincoln Mills once ran one of New England's largest textile operations; the brick mill buildings downtown, many now converted to lofts and restaurants, still anchor the city's identity as the Biddeford-Saco Mills Historic District. Biddeford Pool is a different world: a quiet coastal village with a working lobster harbor, an old summer colony, and Fortunes Rocks Beach nearby. West Biddeford and the corridors toward Route 1 and Route 111 hold the city's newer, more suburban growth, built out through the mid-to-late 20th century.

Building permits in Biddeford go through the Code Enforcement Office, which enters near the City Theater on Main Street, for siding, roofing, window and deck work alike. Maine's Mandatory Shoreland Zoning Act applies within 250 feet of the Saco River and Biddeford's Atlantic coastline, including Biddeford Pool and Fortunes Rocks, which restricts how close new construction and some rebuilding can sit to the water. Exterior work on buildings within the Biddeford-Saco Mills Historic District downtown can face added design review, though most residential streets in the city fall outside that district's boundary.

A new window is only as good as the way it is set into the wall. Replacement windows go in either as inserts inside the existing frame or as full-frame units after the old frame comes out; the right choice depends on the condition of the frame, the trim you want to keep, and the siding around it. The site lists vinyl replacement windows and wood or clad units from Andersen, Marvin, Pella and Integrity, in double-hung, casement, picture, bay, sliding and awning styles.

• Each opening is measured and checked for rot in the sill, jambs and framing.
• Old sashes or whole frames come out; damaged wood is repaired before the new unit goes in.
• Units are set level, plumb and square, shimmed, and fastened as the manufacturer requires.
• Low-expansion foam and backer rod seal the gap without bowing the frame.
• Flashing, exterior trim or capping and interior casing are finished so the opening sheds water.

• Fog or condensation between the panes of insulated glass
• Sashes that stick, will not stay up, or let in drafts
• Soft or rotted sills and frames
• Single-pane glass or storm windows you take on and off every year
• Frost or ice on the inside of the glass in winter

• Number of windows, their sizes, and any custom shapes
• Vinyl versus wood or clad units, and the brand and series
• Insert versus full-frame replacement
• Glass package and grille options
• Interior and exterior trim work, and whether siding is open around the opening

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

For a deeper walkthrough of materials, code details and photos, see our full Window Replacement: U-Factor, ENERGY STAR, and Full-Frame vs. Insert in Maine guide.

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