Roofing Cost Guide: How Much Does a New Roof Really Cost?
Introduction
Once you know how many roofing squares a job covers, total project cost comes down to multiplying that number by regional material and labor rates. But those rates swing widely based on market, shingle grade, roof complexity, and pitch — which is why two roofs of the same size can carry very different price tags. This guide breaks down what actually drives roofing cost so you can build a realistic estimate before calling contractors.
For a complete suite of roofing estimating tools, visit the roofing calculators hub .
The Two Cost Components: Material and Labor
Total installed roofing cost is generally split into material cost per square and labor cost per square.
| Component | Typical Cost Range (per square)* |
|---|---|
| Material (asphalt shingles) | $100–$200 |
| Labor | $150–$400+ |
| Total installed | $350–$600+ |
*Rates are illustrative. Actual costs vary by region, material grade, and roof complexity.
Material cost alone usually runs $100–$200 per square for standard architectural asphalt shingles. Labor is the larger, more variable component, often running $150–$400+ per square depending on local labor rates and roof difficulty.
For help with cost estimation, use the Roofing Cost Estimator .
Why Waste Factor Only Applies to Material
A detail that trips up a lot of first-time estimators: waste factor should be applied to material cost only, not labor.
Formula:
Material with waste = Squares × (1 + Waste factor) × Material rate per square Labor cost = Squares × Labor rate per square Total cost = Material with waste + Labor cost
Example:
20 squares, $150/square material, $200/square labor, 10% waste.
Material: 20 × 1.10 × $150 = $3,300 Labor: 20 × $200 = $4,000 Total: $3,300 + $4,000 = $7,300
How Roof Pitch Affects Labor Cost
Steep-slope roofs carry a labor surcharge because they’re slower and riskier to work on.
| Pitch | Typical Labor Impact |
|---|---|
| Up to 6/12 | Standard rate |
| 7/12–8/12 | +10–15% |
| 9/12–10/12 | +15–25% |
| 11/12+ | +25%+ |
For more on pitch, see the roof pitch guide .
Additional Cost Factors
| Factor | Impact on Cost |
|---|---|
| Tear-off | $50–$100+ per square (remove old roof) |
| Decking repair | $3–$5 per sq ft (if needed) |
| Underlayment | $30–$60 per square |
| Drip edge | $1–$2 per linear ft |
| Gutters | $5–$15 per linear ft |
| Permits | Varies by location |
| Dump fees | Varies by location |
For underlayment estimation, see the underlayment guide . For drip edge, see the drip edge guide .
Common Mistakes to Avoid
Applying the waste factor to labor cost as well as material
Forgetting to add a pitch surcharge for steep roofs
Not budgeting for potential decking repair costs
Using national average cost figures without adjusting for local labor rates
Important Limitations
Estimates Are Not Construction Specifications
This guide provides estimating methodology. Actual costs vary by region, contractor, and site conditions. Always obtain multiple quotes.
Frequently Asked Questions
What is the average cost per square to roof a house?
Total installed cost (material + labor) typically runs $350–$600 per square for asphalt shingles, though this varies widely by region, roof pitch, and tear-off requirements.
Does a steep roof cost more to install?
Yes — steep-slope roofs usually carry a labor surcharge, often adding 10–20% or more to labor costs above roughly a 7/12 or 8/12 pitch.
Should I budget extra for tear-off?
Yes. Removing existing roofing adds labor and dump fees. If the decking underneath needs repair, that’s an additional line item.
Ready to estimate your roof cost? Use the free Roofing Cost Estimator .
Explore More Roofing Resources
This guide covered the basics of cost estimation. For a complete suite of estimating tools, visit our roofing calculators hub — where you’ll find dedicated calculators for shingles, cost, pitch, nails, underlayment, drip edge, gutters, metal panels, and ventilation. Each calculator is paired with a full guide walking you through the math, common mistakes, and project-specific considerations.