We Make It Easy to Find a Window and Door Contractor in Portland, Maine
The windows in a peninsula house are often older than the country's electrical grid. Many are better made than anything you can buy.
That isn't sentiment. It's what the wood is.
A window and door contractor in Portland, ME who will honestly tell you which sash is worth saving is rarer than one willing to sell you thirty new units. We'll line up three.
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This page is about hiring someone in Portland to work on windows and doors, and about knowing when the sash already in the wall beats anything on a shelf. Wood from the 1880s is old-growth and tight-grained. A sash was built to come apart, so putty, cords and cracked panes are repairs, not a reason to replace.
Portland is really two housing stocks. On the peninsula you get 1870 to 1920 Victorians and triple-deckers with original sash still hanging, often in buildings going back from apartments to single-family. Off-peninsula, in Deering and North Deering, the postwar houses are a different conversation entirely.
Restoration work needs a plan for staging, since peninsula lots sit tight to the sidewalk and sash leave for the shop and come back. Three contractors quote the same scope so you can compare that plan side by side. Recent Portland quotes run about $5,000 to $15,000 for one to five windows.
Where does this apply in Portland?
Portland has two housing stocks. This argument fits only one.
On the peninsula the stock is 1870 to 1920, balloon-framed Victorians and triple-deckers, and those are the houses with original sash still in the openings. Many were carved into units decades ago and are being converted back, which means somebody is looking at every window in the building at once.
Getting a crew to those windows is its own problem. Peninsula lots are narrow with almost no setback, and there is nowhere to stage material or park a dumpster without arranging it. Sash restoration happens partly in a shop, so units leave the building and come back, and the openings need closing overnight while they are gone. Ask how that is handled before you agree a schedule.
Plaster over lath is what is behind the interior casing, so anything that disturbs the trim is a plaster repair as well as a window job. That is a real line item on these houses and it belongs on the quote rather than in a conversation afterward.
Off the peninsula, in Deering and North Deering, none of this applies. Mid-century and postwar houses with factory windows that were never intended to be repaired, no district, and driveway access to work from. Those are conventional replacement jobs and they should be priced like conventional replacement jobs.
One credential worth asking about on any pre-1978 house. Disturbing old paint falls under federally required lead-safe work practices, and on a peninsula house every window is painted. That is verifiable, so verify it.
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Ready for three window and door quotes in Portland?
Tell us about the windows and doors. Three vetted installers come back with numbers.
How much do windows and doors cost in Portland, ME?
These ranges come from recent quotes across our network.
| Project | Range | Timeline |
|---|---|---|
| 1–5 windows replaced | $5,000 – $15,000 | 1 – 3 days |
| 6–10 windows replaced | $12,000 – $30,000 | 3 – 7 days |
| Whole-house replacement (15–25 windows) | $28,000 – $65,000 | 1 – 3 weeks |
| Entry door replacement | $3,500 – $12,000 | 1 – 2 days |
| Patio slider or French doors | $5,000 – $16,000 | 1 – 3 days |
Expect a general contractor's fee of 10% to 20% of the project cost.
Peninsula work sits above these rows, mostly because of access. Everything is carried.
Nothing is parked, and there's no yard to work in.
Restoration isn't in that table. It should be quoted per window instead of per house because the windows won't all be in the same condition.
Ask for the grade and price together, one window at a time. Then you can repair the worst eight this year and handle the rest later, with no wasted work.
Other services in Portland
Which towns near Portland do we serve?
What makes old sash worth keeping?
Start with the part nobody says out loud. A window from the 1880s uses dense old-growth wood with a tight grain.
Commercially available softwood isn't the same, which is why the original has survived a hundred and forty winters in the wall.
A sash is repairable by design. It was built to be taken apart. Panes are held by putty and points, the joints are pegged or pinned, and every component was meant to be replaced piece by piece over a very long life. A sealed modern unit is the opposite: when it fails, the whole thing is rubbish.
Most old windows are not failing, they are neglected. Paint has locked the sash to the frame, the cords have parted so nothing balances, the putty has dried and fallen out, and a few panes are cracked. Every one of those is a repair rather than a replacement, and together they are what makes a house feel draughty.
The weights and pulleys are an asset. That pocket in the frame holds a counterweight on a cord, which is why a properly working double hung glides with one hand. Restringing is ordinary work. Cutting the pocket out to fit an insert is the step that cannot be undone.
Reglazing is the visible half. Old putty gets raked out, the rabbet is primed, new glass is bedded and pointed, and the putty is worked to a clean bevel. Done properly it lasts decades. Done badly it fails in three years and it looks wrong immediately.
Weatherstripping is where the performance comes from. An old sash that has been re-hung, tightened and weatherstripped is a genuinely different window from the one that was rattling before. This is the step that changes how the room feels, and it is the step most often skipped.
Be honest about the exceptions. Sills rot, bottom rails rot, and a sash that has been painted shut for forty years and left wet may be past saving. A good contractor tells you which of your twenty windows are worth restoring and which three are not, rather than giving you one answer for the whole house.
And in a district, this may be the approvable path anyway. Portland carries roughly a dozen local historic districts, and exterior work visible from a public way inside one needs approval first. Ask Portland Historic Preservation about your address before you order anything.
Ask each contractor to walk the house and grade every window. One number for the whole house means nobody has looked closely.
This is for owners of peninsula houses who have been told their windows are finished and want a second opinion. It also covers people converting a carved-up building back to fewer units.
Deering families replacing windows in a postwar house have a simpler job.
Start with an honest grade for each sash. Repairs may include re-cording the weights and reglazing.
Painted sash may need freeing, followed by weatherstripping or repairs to sills and rails where the wood has failed.
On these houses, add the plaster. Interior casing on lath doesn't come off cleanly.
Putting it back takes skill.
Sealants and flashing tapes have working temperature ranges. The opening remains exposed during the job, so warm weather is the default.
Deep winter isn't the season for this.
Restoration works differently. Sash can go to a shop in January and return in March.
That makes winter genuinely useful for a peninsula house, and it's why we'd ask about the work now instead of waiting until June.
Portland is the one city in our service area where existing windows are frequently better than their replacements. Everywhere else, the question is which unit to buy.
Here, ask whether you should buy one at all.
A statewide fact worth carrying into your comparisons: Maine does not license general contractors or builders. Plumbers and electricians hold state licenses and nobody else does, so no sash restorer and no window installer carries a state credential you can look up. Insurance, references, financial stability and reputation are checkable, and our ten-step process checks all four before we give you a name.
What do Portland homeowners want to know first?
Are old wood windows worth restoring?
Often, yes. The wood is old-growth and the design is repairable. Most old windows are neglected rather than failing.
What does restoring a sash involve?
Freeing painted sash, re-cording the weights, reglazing, weatherstripping, and repairing rot in the sill or bottom rail.
Will restored windows be draughty?
Not once they are re-hung and weatherstripped. That step is where the performance comes from and it is the one most often skipped.
Can I replace windows in a Portland historic district?
Exterior work visible from a public way needs approval first. Ask the city about your own address before ordering anything.
How do you get a price for your Portland project?
Tell us roughly when the house was built and whether the windows are original. That determines whether the job calls for repair or replacement.