How Much Does a New Roof Cost in Portland, ME? (2027)
Different home? Enter its size and pitch in Portland, ME
Pitch drives both the roof area and the labor. Steep pitches (9/12 or more) slow the crew down, and low ones need extra underlayment care. Our Maine starting value is 7/12.
Expect quotes near $10,850 to $16,540 for a standard shingle re-roof in Portland, ME; that figure assumes a typical 1,680 sq. ft. single-story house. The job we priced has 20.6 squares of roofing (2,058 sq. ft.) on a 7/12 slope; removing one existing layer, labor and materials are all counted.
Roofers bid by the square, which is a hundred square feet of roof; here the installed rate works out to $642.61 a square. Upgrades change the picture: $12,060 to $18,380 for 50-year architectural shingles, or a starting point near $23,340 for steel shingles.
Expect Portland bids to sit roughly $90 higher than the Maine average of $10,780 to $16,430. Portland covers 11 ZIP codes in Cumberland County; roofers based anywhere in that area usually quote these prices.
New Roof Prices in Portland, ME, Material by Material
Every row is the same Portland, ME roof with a different surface. The low and high ends mark the usual spread between contractors; the middle column is the number to budget.
| Material | Installed cost | Estimate | Per square |
|---|---|---|---|
| Asphalt shingles | |||
| Asphalt shingles, 30-year | $10,850 to $16,540 | $13,230 | $642.61 |
| Architectural shingles, 50-year | $12,060 to $18,380 | $14,700 | $714.13 |
| Metal | |||
| Steel shingles | $23,340 to $35,580 | $28,460 | $1,382.76 |
| Aluminum shingles | $25,810 to $39,340 | $31,470 | $1,529.05 |
| Standing seam metal | $31,110 to $47,420 | $37,940 | $1,843.31 |
| Stone-coated steel tiles | $31,770 to $48,430 | $38,740 | $1,882.33 |
| Flat / low-slope membranes (priced on the 1,680 sq. ft. footprint) | |||
| EPDM rubber membrane | $14,780 to $19,200 | $16,990 | $1,011.06 |
| TPO membrane, 60-mil | $12,720 to $16,520 | $14,620 | $870.18 |
| PVC membrane, 60-mil | $15,380 to $19,980 | $17,680 | $1,052.24 |
These figures are not separate guesses. They run through our roof replacement calculator, metal roof calculator and flat roof calculator with the New England regional factor, which lands pitched roofs 8% above the U.S. average.
Price per Year of Roof
The real cost of a roof is price divided by the years it lasts. Hover a bar: metal costs more up front and less per year.
Service lives follow the climate-bell model above (asphalt peaks in moderate regions; metal assumes correct installation); prices are the Portland, ME estimates above.
The Line Items Behind a Portland, ME Roofing Bid
A cheap bid and an expensive bid often describe two different jobs. On this 20.6-square Portland, ME roof, these items carry real dollars:
- Layers to remove. One layer costs roughly $3,170 to take off. Older homes sometimes hide a second layer, which adds near $2,060.
- Hips and valleys. Take a basic gable as the baseline. A hip layout costs roughly $1,310 above it; dormers and valleys scattered across the roof cost about $2,210 above it.
- Stories. Put this roof on a two-story house and the bid rises by about $940 for the extra climbing, staging and hauling.
- Skylights. Swapping or adding a skylight costs around $390 each at Portland, ME rates.
- Roof deck. Ask every bidder for a per-sheet plywood or OSB price. It turns the biggest unknown on the job into a known number.
- Metal details. Drip edge, step flashing and vent boots are cheap to replace during a re-roof; make sure each quote says whether they are new or reused. For gutters, see the gutter cost calculator.
- Permit, dumpster, cleanup. Each town sets its own fees. Get them written into the price, along with a magnetic nail sweep of the yard.
Match the Quote to Your Roof
Change any option to see what that scope costs in Portland, ME. Then compare each bid against it.
$13,230quotes usually $10,850 – $16,540
Every option is priced on the 2,058 sq. ft., 7/12 roof above with calculator math for Portland, ME. Gutters, skylights and deck repairs come on top.
Line the quotes up side by side: layers removed, underlayment type, ice-barrier coverage, flashing, ventilation and the decking price. The lowest bid often leaves one of those out.
How Maine Weather Ages a Roof
Region 1 on the map, Maine sees average summer highs near 79°F and winter readings from about 25°F by day to 6°F at night. Local terrain shifts these numbers. Here is what that weather does to roofing in Maine, and how to spec around it.
Ice dams. Heat leaking from the house melts roof snow, and the water refreezes at the cold overhang. The ice ridge then forces meltwater under the shingles. On a new roof, run ice-barrier membrane along the eaves and valleys, and fix the attic leaks behind it - the attic insulation calculator and roof heat cable calculator price both.
Snow. Long-lasting snow sits on the roof and feeds meltwater into every weak spot. Snow guards over doors and walkways matter on slick metal, and decking repairs matter on any roof.
Sea breeze. Salt-laden air shortens the life of exposed steel on a roof. Upgraded fasteners and aluminum or coated flashing are worth asking for near the coast.
Where Shingles Live Longest: the Climate Bell
Asphalt life peaks in the moderate middle (Region 3) and falls toward BOTH ends of the map above - cold regions destroy shingles with ice dams, hot ones bake them. Note the middle columns: shingles marketed as “lifetime” are good for about 25 real-world years at best - Maine is Region 1. Hover any column.
low pitch holds snow and ice - it costs the most years in cold regions
Planning figures from our climate model, for ventilation-correct installs - a baked, unvented attic can take years off any column. Pitch adjusts the asphalt columns only; metal sheds snow at any sane pitch.
Price a New Roof for Your ZIP Code
Pricing a Metal Roof in Portland, ME
A metal roof on a typical 1,680 sq. ft. single-story house in Portland, ME starts at $23,340. The type you pick matters more than the brand, so here is how the main options differ.
- Standing seam: $31,110 to $47,420. This is the classic metal roof: smooth vertical panels, fasteners tucked under the seam. It suits simple roof shapes and owners who plan to stay. Over architectural shingles, expect about $23,240 more.
- Steel shingles: $23,340 to $35,580. Aluminum shingles: $25,810 to $39,340. Small metal panels with a shingle or tile profile. They go on much like shingles, so hips and dormers are easier than with long panels. Pick aluminum near the ocean and steel inland.
- Stone-coated steel: $31,770 to $48,430. A steel base under a granule finish. You get the tile look at a small part of the weight of real tile.
- Copper: custom quote only. Copper sits above every other metal in price and is bid job by job, so it has no line in our calculator. It is the roof of old churches and city landmarks. On a house it makes the most sense on a small, visible spot or a historic home.
Ice dams are the main roof killer in Maine winters. A smooth metal roof sheds snow in sheets, so meltwater never gets to back up under the edge. The deck stays dry and the roof lives longer. Plan snow guards where people walk.
Think about your timeline: metal's higher price spreads across many more years, but only if you are there to use them. Use the metal roof calculator to price your exact panel type.
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Roofing Season in Portland, ME
Cold winters (highs around 25°F) push most re-roofing into the warm months, when shingle seal strips can bond. Get bids in late winter to secure a spring or summer slot.
Flat and Low-Slope Roof Prices in Portland, ME
Membrane roofing covers what shingles cannot: flat porches, garages, additions and row-house tops. On a 1,680 sq. ft. footprint:
- EPDM rubber: $14,780 to $19,200. Old-school rubber roofing, and still a fair choice. It takes a hailstorm and a hard freeze in stride. The dark color soaks up sun, so it fits best where nobody lives right under it.
- TPO, 60-mil: $12,720 to $16,520. It goes down in sheets that the crew fuses together with a hot-air gun, so there are no glued seams to fail. A common pick when the flat roof sits over a bedroom or a kitchen.
- PVC, 60-mil: $15,380 to $19,980. The premium white membrane: welded seams, a strong fire rating, and good resistance to puddles and chemicals. It fits roofs that carry foot traffic or hold water after a storm.
TPO is the budget choice on this roof, and PVC sits at the top of the range. These figures assume polyiso insulation and one layer removed. Small roofs carry a premium because setup is the same for any size. Make sure a new flat roof drains completely; trapped water and winter freezes are a bad combination. Price your exact membrane, insulation thickness and drains with the flat roof calculator.
Snow load and slow melt are the test in Maine. Any of the three can pass it if the seams are done right and the water has a clear path off the roof. Ask how the bid handles drains and low corners.
Nearby Maine City Guides
How Portland compares with other Maine cities on the standard asphalt roof:
- South Portland, ME (2 miles southwest) - $10,810 to $16,480
- Lewiston, ME (30 miles north) - $10,760 to $16,400
- Bangor, ME (110 miles northeast) - $10,740 to $16,360
Roofers serving Portland also cover Westbrook, Scarborough, Old Orchard Beach, Freeport and Biddeford, generally at similar prices. For statewide figures, see the Maine roofing cost guide.
Answers for Portland, ME Homeowners
How many working days does a new roof need?
Plan on a few days at most for an asphalt roof around 2,058 sq. ft. Complex shapes, a second layer or bad weather can stretch it.
Does homeowners insurance cover roof replacement?
If a storm caused the damage, possibly; if the roof simply wore out, no. A replacement here runs $10,850 to $16,540, so know your deductible and settlement terms before you file.
How can I check the size a roofer quoted?
Start with the area under the roof, including garages and porches, then allow for slope and waste. A 1,680 sq. ft. footprint at 7/12 becomes roughly 20.6 squares (2,058 sq. ft.). Compare bids on the same count.
Who pulls the roofing permit in Maine?
In most places, a complete replacement needs a permit and may need an inspection. Your roofer should apply for it; a request that you do it yourself is a warning sign.
Price it yourself: Roof Replacement Calculator · Metal Roof Calculator · Flat Roof Calculator · Gutter Cost Calculator · Attic Insulation Calculator · Roof Heat Cable Calculator
Where prices come from: our roofing calculators, a New England adjustment and yearly inflation. Real bids depend on your roof, so ask several contractors to quote the same work.
Quick Answers
Answers use Maine averages; energy prices updated October 2026.
What time of year is best for a new roof in Maine?
The warm months. With winter afternoons near 25°F in Maine, shingle adhesive strips struggle to bond, so most crews book late spring into early fall; a cold-weather job needs hand-sealed tabs.
Does a new roof in Maine need an ice barrier membrane?
Yes. Maine averages winter lows near 6°F, cold enough for ice dams. Ask for self-adhering membrane along the eaves, in valleys and around chimneys; local code may set how far up it must run.
Does metal roofing make sense in Maine?
For long-term owners, often. Winter lows near 6°F mean snow and freeze-thaw in Maine; metal sheds the snow and resists both. Plan snow guards wherever sliding snow could land on people.
Will a lighter roof lower cooling costs in Maine?
Only a little. Winter lows around 6°F mean heating dominates the energy bill in Maine; spend first on attic insulation and air sealing.
Can new shingles go on top of the old roof?
Sometimes, if only one layer is on now and local code allows a second. A full tear-off costs more but exposes the deck, so rotted boards get replaced rather than buried.
Run your own numbers: Roof replacement calculator or Metal roof cost calculator.
More Roofing Cost Guides
Maine Roofing costs (statewide) · Roofing costs in every state
