Step 3 of 3 · Free Estimating Tool

Roofing Cost Calculator

Turn your roof measurements and material quantities into an itemized US-dollar installation estimate. Enter your own supplier prices and local labor rates. No fabricated market prices or automatic quotes.

1. Project Measurements

Checking saved measurements…

Measured Roof Area (sq ft)

Roofing Squares (100 sq ft)

Roofing System

Project Type

Edit Roof Area Edit Materials

2. Material Pricing

Imported quantities are editable. Enter the actual cost per unit from your supplier. Zero-priced lines are excluded from the cost but flagged as incomplete.

MaterialQuantityUnit Price ($)

Quantities are planning estimates. Confirm packaging, waste, accessories, and the manufacturer's approved roof assembly before purchasing.

3. Labor & Job Expenses

Use actual local costs; labor is entered per roofing square (100 sq ft of measured roof area).

Installation Labor ($ / square)

Tear-Off Labor ($ / square)

Deck / Structural Repairs ($)

Flashing & Accessories ($)

Dumpster & Disposal ($)

Equipment & Safety ($)

Permits & Inspections ($)

Other Direct Costs ($)

4. Overhead, Contingency & Profit

Allocated Overhead (% of Direct Cost)

Contingency (% of Direct + Overhead)

Target Gross Profit Margin (%)Margin is calculated as profit ÷ selling price, not markup on cost.

Applicable Sales Tax / Fees (% of Pre-Tax Price)Enter only after confirming applicable Texas/local tax treatment; this is not tax advice.

How This Estimate Works

Material costs are quantity × entered unit price. Installation and tear-off labor use measured roofing squares, not waste-adjusted material order area. Direct costs include material, labor, and job expenses. Overhead is added to direct costs, contingency is calculated on direct costs plus overhead, and the target margin is applied by dividing the resulting cost by (1 − margin). Any user-entered tax or fee is added afterward.

Not included automatically: concealed damage, detailed flashing takeoffs, local permit rules, product-specific wind attachment, local taxes, financing, warranty premiums, subcontractor minimums, and unforeseen site conditions. Confirm all before issuing a customer proposal.