Roofing Cost Calculator (2026)

Estimate the cost to replace a roof. Pick your footprint, pitch, material (asphalt, metal, tile, slate, cedar shake), tear-off, and chimney/vent count. 2026 data; not a contractor bid.

Aerial view of a multi-gable home roof mid-replacement with new architectural asphalt shingles, exposed underlayment, and bundles staged on the deck

Enter your roofing project

Includes materials, labor, an equipment allowance and contractor markup; the breakdown below lists each line.

Common projects

Roof dimensions

Floor-plan square footage of the area under the roof, not the slope area.
A 6/12 pitch adds 12% to area; 12/12 adds 41%. Steep pitches (8/12+) add labor.
Eaves + rakes. For a rectangular footprint that's 2(L+W). Drip edge runs along this entire perimeter.

Stories, complexity & access

Moderate: 2-3 valleys and 1-2 dormers. Complex: many valleys or dormers, or a turret.

Material

Uses the first 3 digits as a planning zone (not exact local pricing). Overrides state average when matched.

Tear-off, decking & flashings

Number of existing roof layers to remove. 0 = layover (not recommended). Most homes are 1-2 layers.
Rotten plywood / OSB found at tear-off. 5-10% common; 25%+ for older roofs.

Your roofing estimate

Estimated installed range
Calculating…
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Materials
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Labor
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Per sq ft of roof
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Cost breakdown

Roofing cost breakdown: quantity and estimated range for each line item
ItemQuantityEstimated range
Planning estimate, not a bid. 2026 rates on this page cite HomeGuide (23 rows) and BLS wage data (1). Compare written bids on an identical scope for accurate local pricing.
What's not included: structural deck repair (rotted plywood), gutters and downspouts, soffit/fascia repair, skylights, solar-panel removal/reinstall, and ridge cap upgrades.

Bid check

Got a roofing contractor quote? Compare it to the planning range.

Not sure and Whole estimate compare with the whole estimate. Materials + equipment uses those lines alone, without labor lines or markup; items priced as installed work are left out and the result names them.
Quote per sq ft
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Range check
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Scope risk
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Add a quote amount to compare it against the current estimate.

Methodology & sources

What this is: a planning-range roofing calculator. Its rates cite HomeGuide and BLS wage data. The note under the estimate counts the rows from each source.

Roof area auto-computed from footprint and pitch using the formula roof area = footprint × sqrt(rise² + 144) / 12. A 6/12 pitch multiplies footprint by 1.118, 12/12 by 1.414. Then a 10% waste factor is added for cuts at hips, valleys, and ridges.

Material pricing is per "square" (100 sq ft of roof surface), the industry standard unit. Underlayment, ice/water shield, and drip edge are added based on roof area and perimeter.

Labor is priced from per-unit installed rates, not by the hour. For reference, the rate file also lists a loaded crew rate ($80-$140 per crew-hour) built on BLS OEWS 47-2181 (Roofers).

Last updated: November 2026. Full methodology →

Helpful materials & tools for this project

Re-roofing is mostly shingles and the weatherproofing layers under them:

  • Architectural shingles — The visible surface, sold by the square (100 sq ft).
  • Synthetic underlayment — The water-resistant layer over the deck.
  • Ice-and-water shield — Seals eaves and valleys against ice dams.
  • Drip edge & flashing — Metal that seals edges and penetrations.
  • Roofing nails & caps — Coil nails and cap nails for underlayment.

Suggested materials to help you plan — not an endorsement, and never a contractor referral.

Cost simulator

Monte Carlo simulation

See the full range of likely costs — with the odds

For a typical 2000 sf arch reroof, the installed planning band runs $12,577 to $17,919 nationally before regional adjustment. A known surprise risk is rotted / soft roof decking found at tear-off, typically adding $200–$1,200 when it occurs; our model assumes it on about 50% of these projects, a planning assumption rather than a measured rate.

Worked example: Typical 2000 sf arch reroof

To show exactly how the band is built, here's the calculator's own engine run on the Typical 2000 sf arch reroof scenario at national average pricing — the same line items the calculator produces for this project, laid out as a bill of quantities.

Line-item bill of quantities for the Typical 2000 sf arch reroof worked example, with category and installed range per item
Line itemCategoryInstalled range
Architectural laminated shingles (24.6 squares incl waste)Materials$2,337 – $2,902
Synthetic underlaymentMaterials$559 – $894
Ice & water shield (eaves + valleys)Materials$396 – $671
Drip edge (perimeter)Materials$236 – $400
Chimney re-flashingMaterials$471 – $800
Pipe-boot / vent flashingMaterials$588 – $1,000
Tear-off existing roof (1 layer)Labor$1,789 – $2,460
Dumpster + disposal feesMaterials$353 – $600
Roofing install labor (1-story, simple complexity, standard access)Labor$3,991 – $4,696
Equipment + safety + ladders + jacksEquipment$471 – $800
Roofing permitPermits$150 – $800
Mobilization / minimum chargeLabor$200 – $200
Contractor overhead & profitMarkup 26–30%$1,037 – $1,696
Installed total$12,577 – $17,919

National average, planning ranges not a bid. Change the size, material, or ZIP in the calculator above to reprice this exact breakdown for your project.

What this project costs in different metros

Regional labor and material markets move the installed price. These bands come from the same engine as the calculator above, run at each metro's planning multipliers — enter your ZIP in the calculator for a figure tuned to your area. National reference: $12,600–$17,900.

Roofing typical installed cost by metro area, compared with the national reference
MetroTypical installed rangevs. national
San Francisco, CA$16,100–$22,350+26%
New York, NY$16,350–$22,700+28%
Boston, MA$14,300–$20,150+13%
Chicago, IL$15,200–$21,150+19%
Atlanta, GA$14,900–$20,850+17%
Houston, TX$13,750–$19,350+8%
Miami, FL$12,300–$17,550-2%
Phoenix, AZ$13,150–$18,650+4%

Planning ranges, not contractor quotes. Multipliers are rounded regional planning indices (see methodology), not a reproduction of any proprietary cost table.

Roof replacement cost by house size

Architectural asphalt shingles on a single-story house with a 6/12 pitch and a simple roof, one layer torn off, one chimney, five vents, ice and water shield and a permit, by footprint. The roof perimeter grows with the footprint; the chimney and vents stay the same.

Roof replacement cost by house size: installed cost range for each size, produced by this calculator's own engine
House footprintInstalled rangeRelative
1,000 sq ftfootprint · 6/12 pitch · 1 story · $7.53–$11.29 per sq ft of footprint $7,527 – $11,286
1,500 sq ftfootprint · 6/12 pitch · 1 story · $6.71–$9.75 per sq ft of footprint $10,061 – $14,618
2,000 sq ftfootprint · 6/12 pitch · 1 story · $6.29–$8.96 per sq ft of footprint $12,577 – $17,919
2,500 sq ftfootprint · 6/12 pitch · 1 story · $6.04–$8.49 per sq ft of footprint $15,089 – $21,216
3,000 sq ftfootprint · 6/12 pitch · 1 story · $5.86–$8.17 per sq ft of footprint $17,592 – $24,497

Planning ranges at national average pricing, not contractor quotes. Enter your ZIP in the calculator above for a figure tuned to your area — these rows use the same engine and the same assumptions.

Roof cost by material

The same 2,000 sq ft single-story footprint at a 6/12 pitch with a simple roof, one layer torn off, one chimney, five vents, ice and water shield and a permit, changing only the roofing material.

Roof cost by material: installed cost range for each option, produced by this calculator's own engine
Roofing materialInstalled rangeRelative
Asphalt 3-tab (budget)2,000 sq ft footprint $11,867 – $17,092
Architectural / dimensional asphalt2,000 sq ft footprint $12,577 – $17,919
Metal exposed-fastener (R-panel)2,000 sq ft footprint $18,655 – $29,976
Metal standing-seam2,000 sq ft footprint $22,208 – $36,214
Concrete tile2,000 sq ft footprint $21,848 – $36,214
Clay tile2,000 sq ft footprint $30,958 – $51,582
Slate (premium)2,000 sq ft footprint $60,887 – $104,234
Cedar shake / shingle2,000 sq ft footprint $21,848 – $36,214

Planning ranges at national average pricing, not contractor quotes. Enter your ZIP in the calculator above for a figure tuned to your area — these rows use the same engine and the same assumptions.

What moves this price the most

Vary one input across its full range while holding everything else at the typical scenario, and this is how far each choice can move the installed estimate — measured by running the calculator's own engine. The widest bars are where your decisions matter most; the figures show the cheapest-to-priciest span each input creates on its own.

  • Roofing material$14,500–$82,550
  • House footprint (sq ft)$6,650–$60,650
  • Pitch (rise per 12 in run)$14,100–$30,800
  • Tear-off layers (count)$12,650–$19,500
  • Decking replacement (% of roof)$15,250–$21,950
  • Skylights to re-flash$15,250–$20,350

A tornado view: each row varies a single input; a real project moves several at once, so totals aren't additive.

How much does a roof replacement cost in 2026?

In this calculator, a simple 1,500 sq ft ranch roof (architectural shingles, 6/12 pitch, open access, one layer torn off) runs about $9,800-$14,200. The 2,000 sq ft reference job (a 2,000 sq ft footprint with a 200 ft roof perimeter, single story, 6/12 pitch, simple roof, standard access, one layer torn off, no decking repair, one chimney, five vents, no skylights, ice and water shield, permit, national prices) runs about $12,600-$17,900 in architectural shingles. HomeGuide’s roof replacement guide (November 7, 2025) puts the average replacement at $5,700-$16,000, or $3-$6 per square foot installed; its figures describe average asphalt reroofs, and the two are not calibrated against each other.

For the 2,000 sq ft reference job, and at the smallest and largest footprints the form accepts (500 and 10,000 sq ft), the roofing material moves the modeled midpoint more than pitch, tear-off layers, decking repair or skylights. At the reference job, 3-tab asphalt runs about $11,900-$17,100. Slate runs about $60,900-$104,200.

The table gives this calculator’s material price per square (100 sq ft of roof), before installation and markup; the installed cost of each material at the reference job is in the “Roof cost by material” table above. Lifespans are from HomeGuide’s roof replacement guide (November 7, 2025): the publisher’s estimates, not guaranteed service life.

MaterialMaterial per square, before markupHomeGuide lifespan
Asphalt 3-tab$72-$9215-20 yr
Architectural asphalt$95-$11820-30 yr
Metal (exposed fastener)$294-$50030-80+ yr (all metal)
Metal (standing seam)$412-$70030-80+ yr (all metal)
Concrete tile$400-$70030-100+ yr (all tile)
Clay tile$706-$1,20030-100+ yr (all tile)
Slate$1,765-$3,00050-200+ yr
Cedar shake$400-$70025-30 yr (wood or cedar)

What drives roofing cost

  • Material — the installed cost of each material at the reference job is in the material table above.
  • Pitch — a 6/12 roof has 12% more surface area than a flat one; 12/12 has 41% more. Steep pitches (8/12+) also add labor.
  • Tear-off — $0.80-$1.10 per sq ft per layer, before markup. The dumpster is $353-$600.
  • Underlayment — synthetic underlayment at $0.25-$0.40 per sq ft, before markup. Ice and water shield is $1.18-$2.00 per sq ft on the area it covers.
  • Flashing — chimney re-flashing at $471-$800 each, installed. Pipe boots are $118-$200 each.
  • Region — this calculator’s location factors put New York and California labor 30-35% above the national average; Florida hurricane-rated installs add code-upgrade costs.

Roof replacement cost by home size

Roof area is larger than the home’s footprint because pitch adds surface: a 4/12–6/12 pitch carries roughly 5–12% more area than the footprint. The “Roof replacement cost by house size” table above prices this calculator’s reference job at five footprints using the exact pitch factor: a 2,000 sq ft footprint at 6/12 is 2,236 sq ft of roof.

HomeGuide’s roof replacement guide (November 7, 2025) puts an average asphalt reroof of a single-story home with a 6:12 pitch at $3,500-$6,700 for a 1,000 sq ft house, $6,700-$13,400 for 2,000 sq ft and $10,100-$20,100 for 3,000 sq ft. HomeGuide’s figures describe average asphalt reroofs; this calculator prices the stated job, and the two are not calibrated against each other.

Steeper roofs move both numbers up: an 8/12 pitch adds about 20% more area plus a steep-pitch labor premium; a 12/12 pitch carries roughly 41% more surface than the footprint. Use the calculator's pitch input above for your actual geometry.

Repair or replace?

Repair makes sense when damage is isolated — a few wind-lifted shingles, one flashing leak, a single puncture — and the roof is under about two-thirds of its rated life (see the lifespan column above). Localized repairs preserve the remaining value of the roof you already paid for.

Replacement makes sense when granule loss, curling, or cracking is widespread; when leaks recur in different spots; when the decking feels soft or sags between rafters; or when the roof is at or past its rated lifespan. A second layer already on the roof also tips the decision — most codes allow a maximum of two layers, and stripping both at the next cycle costs more.

Insurance note: homeowners policies generally cover sudden storm damage (wind, hail, falling limbs) minus your deductible — not age or wear. RCV (replacement-cost-value) policies pay today's replacement cost; ACV policies subtract depreciation for the roof's age, which on an older roof can leave a large gap. Photograph damage with dates, request the insurer's adjuster inspection early, and be wary of any contractor offering to "cover your deductible" — that practice is illegal in several states.

Metal vs asphalt: the long-horizon math

At the 2,000 sq ft reference job, standing-seam metal comes to about $22,200-$36,200. Architectural asphalt comes to about $12,600-$17,900. The offset is lifespan: HomeGuide (November 7, 2025) puts metal roofs at 30-80+ years and architectural shingles at 20-30. Over a long ownership horizon, one metal roof can outlive two asphalt cycles, and it adds hail and fire resistance plus better snow shedding.

Exposed-fastener metal panels are the budget path into metal, at about $18,700-$30,000 for the same job. The trade-off is gasketed screws that need inspection and eventual re-tightening, versus the concealed clips of standing seam. If you expect to sell within about ten years, architectural asphalt usually pencils out better; the next owner captures most of a metal roof's longevity premium.

Frequently asked questions

How much does a roof replacement cost in 2026?

HomeGuide's roof replacement guide (November 7, 2025) puts the average replacement at $5,700-$16,000, or $3-$6 per square foot installed. In this calculator, a 1,500 sq ft simple ranch roof (architectural shingles, 6/12 pitch, open access, one layer torn off) runs about $9,800-$14,200. The 2,000 sq ft reference job (2,000 sq ft footprint, 200 ft perimeter, single story, 6/12 pitch, simple roof, standard access, one layer torn off, no decking repair, one chimney, five vents, no skylights, ice and water shield, permit) runs about $12,600-$17,900 in architectural shingles. HomeGuide's figures describe average asphalt reroofs; this calculator prices the stated job, and the two are not calibrated against each other.

What's a roofing square?

A roofing square is 100 square feet of roof surface, and roofing materials are priced per square. In this calculator, a 2,000 sq ft footprint at a 6/12 pitch has 2,236 sq ft of roof surface, about 22.4 squares; the material line orders 24.6 squares because it adds 10% for waste.

Do I need a permit to replace my roof?

Most U.S. cities require a permit for a roof replacement, even with the same material; check with your local building department. This calculator's permit line is $150-$800. HomeGuide's roof replacement guide (November 7, 2025) puts roof replacement permits at $100-$500.

Should I tear off the old roof?

Most contractors recommend tear-off because it reveals damaged decking and lets the new roof start fresh; some jurisdictions allow one layer-over after an inspection. This calculator prices tear-off at $0.80-$1.10 per sq ft per layer, before markup. The dumpster and disposal fees are $353-$600. HomeGuide's roof replacement guide (November 7, 2025) puts tearing off shingles or metal at $1-$3 per square foot.

How long does a new roof last?

HomeGuide’s roof replacement guide (November 7, 2025) gives these lifespans: 3-tab asphalt 15-20 years, architectural shingles 20-30, wood or cedar 25-30, metal 30-80+ (all metal types), tile 30-100+ (all tile types), slate 50-200+. They are the publisher’s estimates, not guaranteed service life; climate, attic ventilation and installation quality move them.

What's the steepest roof you can DIY?

Anything 6/12 or less is workable for a careful DIYer with proper safety equipment. 8/12+ requires harness work, harder physical demands, and significant skill. Most roofers won't price a DIY-handoff.

What's ice and water shield?

A self-adhering rubberized membrane. For asphalt shingles and the other roof coverings IRC R905.1.2 covers, where the local code designates a history of ice forming along the eaves, that section requires an ice barrier from the eave edge to a point at least 24 in inside the exterior wall line of the building. It is a minimum with its own qualifications, and your jurisdiction’s adopted edition and amendments decide whether and how it applies; for metal panels, tile and other systems, follow the adopted code and the roofing manufacturer. Valleys and penetrations are lined to the manufacturer’s instructions, often with the same membrane, which is a separate detail from the eave rule. This calculator allows ice and water shield on 15% of the roof area at $1.18-$2.00 per sq ft, before markup; that is a planning allowance, not a compliance takeoff.

Why does the calculator show a price range?

Roofing prices vary by region, season, contractor, and material brand. The calculator adds up the low and high ends separately, from each line item’s low and high rate, so the range carries that spread instead of a single guess.

How much does a new roof cost on a 2,000 sq ft house?

A 2,000 sq ft footprint at a 6/12 pitch carries about 2,236 sq ft of roof surface, about 22.4 squares. At this calculator's 2,000 sq ft reference job, 3-tab asphalt runs about $11,900-$17,100. Architectural shingles run about $12,600-$17,900. Standing-seam metal runs about $22,200-$36,200.

Does homeowners insurance pay for a new roof?

Usually only when sudden storm damage (wind, hail, fallen trees) is the cause - not age or wear. RCV (replacement cost value) policies pay current replacement cost minus your deductible; ACV policies subtract depreciation for the roof's age. Document damage with dated photos and get the insurer's adjuster out before signing a contractor agreement.

Is a metal roof worth the extra cost?

At this calculator's 2,000 sq ft reference job, standing-seam metal runs about $22,200-$36,200. Architectural asphalt runs about $12,600-$17,900. HomeGuide's roof replacement guide (November 7, 2025) puts metal roofs at 30-80+ years and architectural shingles at 20-30. Staying long-term, one metal roof can outlive two asphalt roofs and adds hail and fire resistance. Selling within about ten years, asphalt usually pencils out better.

Common mistakes & questions

  • Multiple existing layers — code allows max 2 layers in most jurisdictions; tear-off mandatory beyond.
  • Skipping the ice barrier where your code requires it — in areas the local code designates for ice-dam risk, the eaves need one; ask how the valleys and penetrations will be lined.
  • Skip ventilation upgrade — undervented roofs cook shingles in 10-12 yr instead of 20-25.
  • Cheap underlayment — ask whether the bid uses synthetic underlayment or 15# felt; synthetic is now the usual choice.
  • Ask your contractor: manufacturer warranty (Atlas/GAF/Owens Corning system), nail pattern, ice shield height, ridge ventilation.

When this estimate is wrong

  • Rotted deck is only found at tear-off — soft or delaminated sheathing around valleys, chimneys, and eaves has to be replaced by the sheet, and no one can price it until the old roof is off.
  • Existing layers change the labor — a second or third layer of shingles means more tear-off and disposal, and most codes cap the roof at two layers, forcing a full strip.
  • Flashing is where roofs leak — new step flashing at walls and proper flashing at valleys, chimneys, and skylights is real labor that a shingle-only figure understates.
  • Steep pitch, height, and access add cost — anything past a walkable slope, or a tall multi-story roof, needs staging and slows every stage of the job.
  • Ice barrier and underlayment follow the code and the manufacturer — where the local code designates ice-dam risk the eaves need an ice barrier, valley and penetration linings follow the shingle manufacturer, and synthetic underlayment is now the usual choice, all adding to a bare-shingle price.
  • Ventilation may need to be brought up to code — adding ridge vent or intake to meet current requirements protects the warranty but adds scope.
  • Permits and inspections add time — a re-roof permit and its inspection add days, and a failed inspection adds rework before the job closes.