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RealCostIQ

Roofing Cost Calculators

19 free calculators — replacement, repair, shingles, metal, gutters, and snow load. Know your numbers before the roofer arrives.

19 free calculators
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Replacement & Full Installs6Components & Add-Ons7Measurement & Planning6

What a roof costs

Full replacement, tear-off includedMost homes, all materials
$5,700–$25,000 for most homes
Asphalt shingles15–30 yr typical service life
$5,700–$12,000
Metal (standing seam)40–70 yr typical service life
$10,000–$40,000
Tile (concrete / clay)50+ yr typical service life
$10,500–$62,500
Natural slate75–100 yr typical service life
$22,000–$70,000

Full tear-off and replacement, installed, for a typical 2,000 sq ft home — whole-job totals as the sources report them, not a per-square-foot rate. National average estimate for 2026. Your own roof area depends on footprint and pitch; use the calculator above for a figure priced from it. Tear-off of the old roof is priced in as a labor line item within these figures, not billed separately. Service-life figures are typical manufacturer ranges, not from the cost sources. Last verified July 2026.

Replacement & Full Installs

6

Roof Replacement Cost Calculator

Full replacement cost by material, home size, and pitch

$5,000–$30,000+8 materialsPitch multiplier

New Roof Installation Cost Calculator

New construction roof installation costs (no tear-off)

$4,000–$20,000New constructionNo tear-off

Asphalt Shingle Calculator

Shingle bundles, squares, and total installed cost

$3,500–$12,000Bundle/square calcStarter strip

Metal Roofing Cost Calculator

Metal roofing costs with energy savings vs. asphalt payback

$10,000–$40,000Energy savings50-yr lifespan

Flat Roof Cost Calculator

TPO, EPDM, modified bitumen, and PVC flat roof costs

$4,000–$14,0004 flat roof typesWarranty comparison

Tile Roof Cost Calculator

Concrete and clay tile roof costs with structural assessment

$15,000–$45,000Structural checkClay vs concrete

Components & Add-Ons

7

Gutter Installation Cost Calculator

Gutter costs by material, style, and home perimeter

$600–$4,000Aluminum/copper/vinylLeaf guard

Skylight Installation Cost Calculator

Skylight costs by type, size, and quantity

$800–$6,000Fixed/vented/tubularMulti-skylight discount

Roof Decking Calculator

Decking costs by material and replacement area

$1,000–$8,000OSB vs plywoodPartial replacement

Roof Truss Cost Calculator

Truss costs by type, span, and home footprint

$3,000–$15,0008 truss typesPer-truss cost

Roof Underlayment Calculator

Underlayment costs by material type and area

$200–$1,500Felt/synthetic/ice & waterOverlap included

Roof Vent Calculator

Ventilation quantities and total installation cost

$300–$2,500NFA calculationRidge/box/soffit

Downspout Calculator

Downspout costs by material, count, and height

$100–$1,200Aluminum/copper/vinylExtensions

Measurement & Planning

6

Roof Repair Cost Calculator

Repair costs by damage type, area, and roofing material

$150–$4,000Urgency premiumDamage type guide

Roofing Squares Calculator

Roofing squares and bundles from home size and pitch

Material calculatorPitch factorBundle/square

Roof Pitch Calculator

Roof pitch ratio, angle in degrees, and actual roof area

Free toolRise/run to angleArea multiplier

Roof Area Calculator

Actual roof area from house footprint and pitch

Free toolMulti-section roofsOverhang included

Roof Cost Per Square Foot Calculator

Compare costs per sq ft across 8 roofing materials

$1–$20+/sq ftRegional adjustmentMaterial comparison

Snow Load Roof Calculator

Design snow load using ASCE 7 methodology

Structural toolASCE 7 standardGeographic zones

What a roof costs in 2026

A full tear-off and replacement runs $5,700–$25,000 for most homes. Material is the single biggest lever: asphalt shingles sit at the bottom of that band and natural slate at the top, a spread of roughly 12×. Repairs are a different order of magnitude entirely — $400–$3,000 for most repairs — which is why the repair-or-replace decision is worth making deliberately rather than defaulting to whatever the first roofer quotes.

Premium materials (high-end tile, natural slate) run $40,000–$70,000+. Steep pitch, multiple stories, and structural repairs raise the total.

How roofing is measured

Roofers price in squares, not square feet. One square is 100 sq ft of roof surface. Two things trip up homeowners comparing quotes:

  • Pitch multiplier. Your roof is larger than your house footprint. A 6/12 pitch adds about 12% to the area over the footprint; a 12/12 pitch adds about 41%. A quote priced off footprint alone will be short.
  • Waste factor. Cuts, hips, valleys and starter courses mean you buy more material than the bare area. 10% is standard on a simple gable; complex roofs with multiple valleys run 15–20%.
  • Layers. Tear-off is priced per existing layer. A second layer is a real line item, not a rounding error.

The pitch, area and squares calculators do this arithmetic so you can check a quote's stated area before you compare prices.

Where the money actually goes

On a typical asphalt replacement, labour is the majority of the bill — commonly around 55–65% — with material the balance. That ratio is why the same roof costs meaningfully more in a high-wage metro than a low-wage one, and it is the basis for our metro-by-metro roof cost guides, which adjust labour using Bureau of Labor Statistics wage data for each area.

Components people forget to budget: underlayment at $0.75–$4 per sq ft installed, and gutters at $1,000–$10,000 for a typical home. Flat sections are priced separately again — $4,000–$16,800 installed by membrane type.

Which calculator do you need?

If you are…Start with
Budgeting a whole new roofRoof Replacement Cost
Deciding whether to patch or replaceRoof Repair Cost
Checking a quote’s stated areaRoofing Squares
Comparing two materials like-for-likeCost Per Square Foot
Roofing a flat or low-slope sectionFlat Roof Cost
In a heavy-snow regionSnow Load

Repair or replace?

The rough test most contractors use: if the damage is localised, the deck is sound, and the roof is inside roughly two-thirds of its service life, repair. If the roof is near end-of-life, has damage across multiple planes, or the repair quote approaches a third of replacement cost, replacing usually wins on cost-per-year. Our repair-vs-replacement guide works through the age, damage-extent and insurance angles in detail.

Sources

Cost ranges on this page come from the same sourced data files the calculators use. Figures last verified July 2026.

Guides that go with these calculators