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Free roof estimate calculator for shingles, metal, tile, and slate. Price tear-off, waste, labor, accessories, and installed roofing cost with 2026 data.
Calculator inputs
Enter measured project values. Results update only when you choose Calculate.
Method
A standard 2,000 square foot single-family roof replacement in 2026 runs $7,000 to $17,000 installed for 30-year architectural asphalt shingles (average $10,250 per HomeGuide and This Old House 2026 data), $16,000 to $36,000 for standing-seam metal (Angi, Modernize 2026 reporting), $14,000 to $38,000 for concrete tile, $22,000 to $44,000 for clay tile, and $36,000 to $77,000 for natural slate. Those numbers include tear-off of one existing layer, synthetic underlayment, ice and water shield in valleys and eaves, drip edge, ridge cap, and a workmanship warranty on a simple gable roof in a mid-cost US market. Cut-up hip roofs, steep slopes over 8/12, multi-layer tear-offs, and rotted decking add 15 to 35 percent on top.
The variance is geometry, material, and market. Pitch above 8/12 carries a 15 to 35 percent labor premium because crews need roof jacks, harnesses, and slower productivity (about 25 to 40 percent slower output per Sheffield Metals and contractor surveys). Complex hip roofs with multiple valleys and dormers add 10 to 15 percent in material waste plus the labor to handle every cut. Tear-off discoveries — rotted plywood, hidden second layers, knob-and-tube in the attic — add real dollars once the existing roof comes off. Regional swings are wide: architectural asphalt runs $5.50 to $6.50/SF in Texas, Arizona, and the South versus $7.50 to $9/SF in the Northeast and coastal California. This calculator builds the cost stack one line at a time so the surprises in the field are documented in the bid before they happen.
Pull the footprint from a plan, a tape measure, or an aerial measurement report (EagleView, HOVER, GAF QuickMeasure). Confirm the pitch with a 24-inch level held against the roof or by reading the slope arrow on architectural plans. Pitch is the single biggest driver of actual roof area — a 1,500 SF footprint becomes 1,677 SF of roof at 6/12 and 1,803 SF at 8/12.
Multiply the footprint by the pitch multiplier: 1.054 at 4/12, 1.118 at 6/12, 1.202 at 8/12, 1.302 at 10/12, 1.414 at 12/12. Divide by 100 to get squares — a roofing square equals 100 SF of roof surface. All shingle, metal, and tile pricing is denominated per square in contractor bids, even when the homeowner-facing quote prints per square foot.
2026 installed costs (per HomeGuide, This Old House, Angi, Modernize, and Fixr 2026 data): 3-tab asphalt $343 to $500 per square, 30-year architectural asphalt $550 to $800, premium designer asphalt up to $1,200, standing-seam metal $1,000 to $1,800 (premium up to $3,500 for copper), corrugated metal $500 to $1,200, stone-coated steel $700 to $1,500, concrete tile $700 to $1,900, clay tile $1,100 to $2,200, natural slate $1,780 to $3,848 (S2 soft slate to S1 hard slate). All include basic underlayment, ridge cap, and drip edge — not material-only.
Tear-off runs $100 to $175 per square for a single layer of asphalt with disposal (3 to 5 tons of debris per typical residential job at $50 to $150 per ton, per SquareDash and HomeGuide 2026 data). Hold a $1 to $3 per SF decking repair allowance for surprises (typical replacement finds 50 to 150 SF of rot on an aging plywood deck). Add ice and water shield ($60 to $90 per roll, 200 SF coverage) for valleys and eaves, ridge vent ($3 to $7 per LF), pipe boots, step flashing, and chimney flashing. Skylights and chimney crickets are extra.
Waste runs 5 to 8 percent on simple gable roofs, 10 to 15 percent on cut-up hip roofs with multiple valleys. Steep-slope premium adds 15 to 35 percent on labor at pitches over 8/12 — or $0.50 to $2.00 per SF per typical contractor surcharge schedules. Multiply through to your retail price with overhead recovery and target net margin (residential roofers commonly land at 25 to 40 percent total markup). Cross-check against your historical closeout cost on a comparable past job before sending the proposal.
A standard 2,000 SF architectural asphalt shingle roof replacement runs $7,000 to $17,000 installed in 2026 (average $10,250 per HomeGuide and This Old House data), or $5.09 to $6.66 per square foot on the national average. Standing seam metal runs $16,000 to $36,000 ($10 to $18/SF per Angi and Modernize 2026 data). Concrete tile runs $14,000 to $38,000. Clay tile runs $22,000 to $44,000. Natural slate runs $36,000 to $77,000+. Pitch, complexity, tear-off scope, and region drive 20 to 50 percent variance on top.
3-tab asphalt shingles are the cheapest residential roofing at $343 to $500 per square installed (materials $90 to $120/sq, labor $150 to $300/sq). Most contractors no longer install 3-tab on new replacements because 30-year architectural asphalt is only $100 to $300 more per square and lasts 50 to 100 percent longer with better warranty coverage. The cheapest practical replacement in 2026 is architectural asphalt from GAF, CertainTeed, or Owens Corning at $550 to $800 per square installed.
Standing seam metal is roughly 2x the installed cost of architectural asphalt: $1,000 to $1,800 per square installed vs $550 to $800 (per Angi and Modernize 2026 data). The premium pays back over the 40 to 70 year galvalume service life vs 15 to 25 for asphalt, plus avoided reroof cycles. Corrugated metal narrows the gap to $500 to $1,200 per square and is common on workshops, barns, and budget-conscious residential roofs. Class 4 impact-rated metal also qualifies for 5 to 35 percent homeowners insurance discounts in hail markets.
Industry pricing is per square — a roofing square equals 100 square feet of roof surface. A 2,000 SF roof is 20 squares. Asphalt shingles come in bundles: 3 bundles cover one square of architectural; 3 to 4 bundles cover one square of 3-tab and designer. When a homeowner quote shows $/SF, it is converted from the contractor-side $/square — same math, different denominator. Always confirm before comparing bids.
Single-layer asphalt tear-off runs $100 to $150 per square in 2026, plus $40 to $60 per square in disposal ($50 to $150 per ton landfill fee on 3 to 5 tons of debris per typical residential job, per SquareDash and HomeGuide). Multi-layer tear-offs (two or three layers, which require deck inspection and increase risk) run $150 to $250 per square. Tear-off is usually 8 to 15 percent of the total replacement cost.
A calculator that asks only for square footage and material is 30 to 50 percent uncertain because it cannot see pitch, complexity, tear-off scope, regional labor, or accessory requirements. A calculator that builds up cost from squares + material + tear-off + waste + labor + accessories (this one) lands within 10 to 15 percent of a contractor bid when the inputs are honest. The only way to get within 5 percent is a site visit or an aerial measurement plus a contractor walking the attic for decking condition.
Most US homeowners policies cover sudden damage from wind, hail, or fallen trees (Actual Cash Value or Replacement Cost Value depending on policy). They do not cover gradual wear or age-related failure. A storm-damaged roof files a claim where the carrier sends an adjuster, sets scope per Xactimate-aligned line items, and pays out minus the deductible (typically $1,000 to $5,000 for standard policies, higher in hail zones). Class 4 impact-resistant roofing (UL 2218 tested) qualifies for 5 to 35 percent premium discounts on the homeowner policy.
Separate plan workflow
This calculator solves one bounded formula from the inputs shown. BuildVision AI supports reviewed plan takeoff, complete-document CSV, and editable quote lines; the estimator owns pricing and final bid approval.